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Core Data from the Deep Sea Drilling Project
Leg : 28 Top/Bottom Interval(mm) : 00/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 0.00 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 1.50 Age:
Sect: 1 Thickness of Layer(m) : 1.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 0 1.23/ 88 144
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : DIATOM OOZE
Screen Lith : DIATOM OOZE
Leg : 28 Top/Bottom Interval(mm) : 00/1280 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 1.50 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 2.78 Age:
Sect: 2 Thickness of Layer(m) : 1.28
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 79 21 1.28/ 85 126
Processing Hist: Classification was successful.
Shipboard Lith : DIATOM OOZE
Screen Lith : DIATOM OOZE
Leg : 28 Top/Bottom Interval(mm) : 1280/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 2.78 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 3.00 Age:
Sect: 2 Thickness of Layer(m) : 0.22
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 21 1.34/ 81 23
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 1010/1230 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 4.01 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 4.23 Age:
Sect: 3 Thickness of Layer(m) : 0.22
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 21 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 1230/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 4.23 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 4.50 Age:
Sect: 3 Thickness of Layer(m) : 0.27
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 2 98 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH TERRIGENOUS DETRITUS RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 600/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 6.60 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 7.50 Age:
Sect: 5 Thickness of Layer(m) : 0.90
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 86 14 /
Processing Hist: Classification was successful.
Shipboard Lith : SILT RICH DIATOM OOZE
Screen Lith : DIATOM OOZE
Leg : 28 Top/Bottom Interval(mm) : 00/ 300 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 7.50 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 7.80 Age:
Sect: 6 Thickness of Layer(m) : 0.30
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 83 17 /
Processing Hist: Classification was successful.
Shipboard Lith : SILT RICH DIAT OOZE
Screen Lith : DIATOM OOZE
Leg : 28 Top/Bottom Interval(mm) : 300/ 710 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 7.80 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 8.21 Age:
Sect: 6 Thickness of Layer(m) : 0.41
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 17 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 710/ 820 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 8.21 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 8.32 Age:
Sect: 6 Thickness of Layer(m) : 0.11
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 17 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 820/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 8.32 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 9.00 Age:
Sect: 6 Thickness of Layer(m) : 0.68
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 17 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : MUDDY SAND
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 9.10 Age: UPPER PLEISTOCENE
Core: 1 Depth Bottom of Layer(m): 9.10 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 2 98 /
Processing Hist: Classification was successful.
Shipboard Lith : CLAYEY SILT
Screen Lith : QUARTZ RICH TERRIGENOUS DETRITUS RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 420/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 27.42 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 28.50 Age:
Sect: 1 Thickness of Layer(m) : 1.08
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 6 94 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 00/ 40 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 28.50 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 28.54 Age:
Sect: 2 Thickness of Layer(m) : 0.04
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.44/ 75 3
Processing Hist:
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 40/ 140 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 28.54 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 28.64 Age:
Sect: 2 Thickness of Layer(m) : 0.10
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.69/ 60 10
Processing Hist:
Shipboard Lith : CLAYEY SILT
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 140/ 290 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 28.64 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 28.79 Age:
Sect: 2 Thickness of Layer(m) : 0.15
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.57/ 67 16
Processing Hist:
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 290/ 330 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 28.79 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 28.83 Age:
Sect: 2 Thickness of Layer(m) : 0.04
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.66/ 62 5
Processing Hist:
Shipboard Lith : CLAYEY SILT
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 330/ 620 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 28.83 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 29.12 Age:
Sect: 2 Thickness of Layer(m) : 0.29
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.60/ 66 31
Processing Hist:
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 620/ 710 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 29.12 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 29.21 Age:
Sect: 2 Thickness of Layer(m) : 0.09
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.79/ 55 9
Processing Hist:
Shipboard Lith : CLAYEY SILT
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 710/ 960 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 29.21 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 29.46 Age:
Sect: 2 Thickness of Layer(m) : 0.25
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.82/ 52 27
Processing Hist:
Shipboard Lith : COARSE SILT
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 1050/1130 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 29.55 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 29.63 Age:
Sect: 2 Thickness of Layer(m) : 0.08
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.84/ 51 8
Processing Hist:
Shipboard Lith : FINE SAND
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 1130/1170 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 29.63 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 29.67 Age:
Sect: 2 Thickness of Layer(m) : 0.04
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.83/ 52 4
Processing Hist:
Shipboard Lith : CLAYEY SILT
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 1170/1300 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 29.67 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 29.80 Age:
Sect: 2 Thickness of Layer(m) : 0.13
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.80/ 54 14
Processing Hist:
Shipboard Lith : SAND
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 1300/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 29.80 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 30.00 Age:
Sect: 2 Thickness of Layer(m) : 0.20
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.65/ 63 21
Processing Hist:
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 00/ 300 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 30.00 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 30.30 Age:
Sect: 3 Thickness of Layer(m) : 0.30
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.72/ 59 30
Processing Hist:
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 300/ 400 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 30.30 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 30.40 Age:
Sect: 3 Thickness of Layer(m) : 0.10
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 7 93 1.63/ 64 10
Processing Hist: Classification was successful.
Shipboard Lith : DIAT BEARING SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 400/1000 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 30.40 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 31.00 Age:
Sect: 3 Thickness of Layer(m) : 0.60
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.61/ 65 64
Processing Hist:
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 1000/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 31.00 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 31.50 Age:
Sect: 3 Thickness of Layer(m) : 0.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 2 98 1.61/ 65 53
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 00/ 600 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 31.50 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 32.10 Age:
Sect: 4 Thickness of Layer(m) : 0.60
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 4 96 1.64/ 63 63
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : SILT
Leg : 28 Top/Bottom Interval(mm) : 600/ 900 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 32.10 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 32.40 Age:
Sect: 4 Thickness of Layer(m) : 0.30
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.57/ 68 32
Processing Hist:
Shipboard Lith : DIAT BEARING SILTY CLAY
Screen Lith : CLASTIC SEDIMENT.
Leg : 28 Top/Bottom Interval(mm) : 900/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 32.40 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 33.00 Age:
Sect: 4 Thickness of Layer(m) : 0.60
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 4 96 1.67/ 61 63
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : FELDSPAR RICH QUARTZ RICH SILT
Leg : 28 Top/Bottom Interval(mm) : 00/1010 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 33.00 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 34.01 Age:
Sect: 5 Thickness of Layer(m) : 1.01
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 96 1.63/ 64 104
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 1010/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 34.01 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 34.50 Age:
Sect: 5 Thickness of Layer(m) : 0.49
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 96 1.57/ 67 52
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : DIAT BEARING SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 00/1180 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 34.50 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 35.68 Age:
Sect: 6 Thickness of Layer(m) : 1.18
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 6 94 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 1180/1500 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 35.68 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 36.00 Age:
Sect: 6 Thickness of Layer(m) : 0.32
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 94 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: UPPER PLEISTOCENE
Hole: 268 Depth Top of Layer(m) : 36.10 Age: UPPER PLEISTOCENE
Core: 2 Depth Bottom of Layer(m): 36.10 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 94 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SAND BEARING CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 600/1500 Age:
Hole: 268 Depth Top of Layer(m) : 56.10 Age:
Core: 3 Depth Bottom of Layer(m): 57.00 Age:
Sect: 1 Thickness of Layer(m) : 0.90
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 4 96 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : FELDSPAR RICH QUARTZ RICH SILT
Leg : 28 Top/Bottom Interval(mm) : 00/1350 Age:
Hole: 268 Depth Top of Layer(m) : 57.00 Age:
Core: 3 Depth Bottom of Layer(m): 58.35 Age:
Sect: 2 Thickness of Layer(m) : 1.35
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 96 1.69/ 60 125
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age:
Hole: 268 Depth Top of Layer(m) : 58.60 Age:
Core: 3 Depth Bottom of Layer(m): 58.60 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 2 98 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 520/1500 Age:
Hole: 268 Depth Top of Layer(m) : 84.52 Age:
Core: 4 Depth Bottom of Layer(m): 85.50 Age:
Sect: 1 Thickness of Layer(m) : 0.98
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 70 30 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : MUDDY DIATOM OOZE
Leg : 28 Top/Bottom Interval(mm) : 00/1500 Age: PLIOCENE
Hole: 268 Depth Top of Layer(m) : 85.50 Age: PLIOCENE
Core: 4 Depth Bottom of Layer(m): 87.00 Age:
Sect: 2 Thickness of Layer(m) : 1.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 30 1.57/ 67 156
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: PLIOCENE
Hole: 268 Depth Top of Layer(m) : 87.10 Age: PLIOCENE
Core: 4 Depth Bottom of Layer(m): 87.10 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 5 95 /
Processing Hist: Classification was successful.
Shipboard Lith : DIAT BEARING SILTY CLAY
Screen Lith : CLAY MINERAL RICH TERRIGENOUS DETRITUS RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 00/ 130 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 113.50 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 113.63 Age:
Sect: 1 Thickness of Layer(m) : 0.13
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 95 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : PEBBLY DIAT RICH SILTY CLAY
Screen Lith : DIATOM RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 130/ 880 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 113.63 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 114.38 Age:
Sect: 1 Thickness of Layer(m) : 0.75
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 32 68 /
Processing Hist: Classification was successful.
Shipboard Lith : DIAT DETRITAL SILTY CLAY
Screen Lith : CLAY MINERAL RICH DIATOM MUD
Leg : 28 Top/Bottom Interval(mm) : 880/ 950 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 114.38 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 114.45 Age:
Sect: 1 Thickness of Layer(m) : 0.07
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 21 79 /
Processing Hist: Classification was successful.
Shipboard Lith : FINE SAND
Screen Lith : DIATOM RICH CLAY MINERAL RICH SANDY MUD
Leg : 28 Top/Bottom Interval(mm) : 950/1140 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 114.45 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 114.64 Age:
Sect: 1 Thickness of Layer(m) : 0.19
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 1140/1220 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 114.64 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 114.72 Age:
Sect: 1 Thickness of Layer(m) : 0.08
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 00/ 170 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 115.00 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 115.17 Age:
Sect: 2 Thickness of Layer(m) : 0.17
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 1.49/ 72 7
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : PEBBLY SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 170/ 290 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 115.17 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 115.29 Age:
Sect: 2 Thickness of Layer(m) : 0.12
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 1.65/ 63 12
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 290/ 540 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 115.29 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 115.54 Age:
Sect: 2 Thickness of Layer(m) : 0.25
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 1.37/ 79 26
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 540/ 590 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 115.54 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 115.59 Age:
Sect: 2 Thickness of Layer(m) : 0.05
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 1.27/ 85 5
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : COARSE SILT
Screen Lith : SILT
Leg : 28 Top/Bottom Interval(mm) : 590/ 920 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 115.59 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 115.92 Age:
Sect: 2 Thickness of Layer(m) : 0.33
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 1.40/ 78 36
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 920/1060 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 115.92 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 116.06 Age:
Sect: 2 Thickness of Layer(m) : 0.14
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 1.51/ 71 15
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SAND
Screen Lith : SAND
Leg : 28 Top/Bottom Interval(mm) : 1060/1370 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 116.06 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 116.37 Age:
Sect: 2 Thickness of Layer(m) : 0.31
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 19 81 1.81/ 53 33
Processing Hist: Classification was successful.
Shipboard Lith : PEBBLY CLAYEY SILT
Screen Lith : DIATOM RICH CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 1370/1470 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 116.37 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 116.47 Age:
Sect: 2 Thickness of Layer(m) : 0.10
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 81 2.13/ 34 10
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: UPPER MIOCENE
Hole: 268 Depth Top of Layer(m) : 116.60 Age: UPPER MIOCENE
Core: 5 Depth Bottom of Layer(m): 116.60 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 11 89 /
Processing Hist: Classification was successful.
Shipboard Lith : DIAT BEARING SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 920/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 135.42 Age: MIOCENE
Core: 6 Depth Bottom of Layer(m): 136.00 Age:
Sect: 1 Thickness of Layer(m) : 0.58
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 /
Processing Hist:
Shipboard Lith : GRANITES
Screen Lith : CLASTIC SEDIMENT.
Leg : 28 Top/Bottom Interval(mm) : 1220/1340 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 145.22 Age: MIOCENE
Core: 7 Depth Bottom of Layer(m): 145.34 Age:
Sect: 1 Thickness of Layer(m) : 0.12
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 /
Processing Hist:
Shipboard Lith : GRANITE
Screen Lith : CLASTIC SEDIMENT.
Leg : 28 Top/Bottom Interval(mm) : 1340/1420 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 145.34 Age: MIOCENE
Core: 7 Depth Bottom of Layer(m): 145.42 Age:
Sect: 1 Thickness of Layer(m) : 0.08
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 /
Processing Hist:
Shipboard Lith : AMPHIBOLITE?L AMPHIBOLITE?
Screen Lith : CLASTIC SEDIMENT.
Leg : 28 Top/Bottom Interval(mm) : 00/ 60 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 145.50 Age: MIOCENE
Core: 7 Depth Bottom of Layer(m): 145.56 Age:
Sect: 2 Thickness of Layer(m) : 0.06
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 60/ 340 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 145.56 Age: MIOCENE
Core: 7 Depth Bottom of Layer(m): 145.84 Age:
Sect: 2 Thickness of Layer(m) : 0.28
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 82 18 1.55/ 69 29
Processing Hist: Classification was successful.
Shipboard Lith : DIAT OOZE
Screen Lith : CLAY MINERAL RICH DIATOM OOZE
Leg : 28 Top/Bottom Interval(mm) : 340/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 145.84 Age: MIOCENE
Core: 7 Depth Bottom of Layer(m): 147.00 Age:
Sect: 2 Thickness of Layer(m) : 1.16
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 68 32 1.37/ 79 123
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY RICH DIAT OOZE
Screen Lith : CLAY MINERAL RICH MUDDY DIATOM OOZE
Leg : 28 Top/Bottom Interval(mm) : 00/ 690 Age: LOWER MIOCENE
Hole: 268 Depth Top of Layer(m) : 170.50 Age: LOWER MIOCENE
Core: 8 Depth Bottom of Layer(m): 171.19 Age:
Sect: 1 Thickness of Layer(m) : 0.69
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
1 12 87 1.74/ 57 53
Processing Hist: Classification was successful.
Shipboard Lith : DIAT BEARING SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 690/ 750 Age: LOWER MIOCENE
Hole: 268 Depth Top of Layer(m) : 171.19 Age: LOWER MIOCENE
Core: 8 Depth Bottom of Layer(m): 171.25 Age:
Sect: 1 Thickness of Layer(m) : 0.06
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 2 98 1.76/ 56 7
Processing Hist: Classification was successful.
Shipboard Lith : CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 750/ 800 Age: LOWER MIOCENE
Hole: 268 Depth Top of Layer(m) : 171.25 Age: LOWER MIOCENE
Core: 8 Depth Bottom of Layer(m): 171.30 Age:
Sect: 1 Thickness of Layer(m) : 0.05
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
30 19 51 1.64/ 64 5
Processing Hist: Classification was successful.
Shipboard Lith : DIAT BEARING NANNO CLAY
Screen Lith : NANNOFOSSIL RICH CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 800/1350 Age: LOWER MIOCENE
Hole: 268 Depth Top of Layer(m) : 171.30 Age: LOWER MIOCENE
Core: 8 Depth Bottom of Layer(m): 171.85 Age:
Sect: 1 Thickness of Layer(m) : 0.55
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 7 58 1.57/ 67 59
Processing Hist: Classification was successful.
Shipboard Lith : SILTY NANNO CLAY
Screen Lith : CLAY MINERAL RICH MARLY NANNOFOSSIL CHALK
Leg : 28 Top/Bottom Interval(mm) : 560/1500 Age: LOWER MIOCENE
Hole: 268 Depth Top of Layer(m) : 172.56 Age: LOWER MIOCENE
Core: 8 Depth Bottom of Layer(m): 173.50 Age:
Sect: 2 Thickness of Layer(m) : 0.94
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
50 35 58 1.49/ 72 94
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : NANNO OOZE
Screen Lith : NANNOFOSSIL OOZE
Leg : 28 Top/Bottom Interval(mm) : 140/1110 Age: LOWER MIOCENE
Hole: 268 Depth Top of Layer(m) : 173.64 Age: LOWER MIOCENE
Core: 8 Depth Bottom of Layer(m): 174.61 Age:
Sect: 3 Thickness of Layer(m) : 0.97
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 58 1.52/ 71 96
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 1110/1500 Age: LOWER MIOCENE
Hole: 268 Depth Top of Layer(m) : 174.61 Age: LOWER MIOCENE
Core: 8 Depth Bottom of Layer(m): 175.00 Age:
Sect: 3 Thickness of Layer(m) : 0.39
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 58 1.52/ 71 41
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : NANNO RICH SILTY CLAY
Screen Lith : NANNOFOSSIL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: LOWER MIOCENE
Hole: 268 Depth Top of Layer(m) : 175.10 Age: LOWER MIOCENE
Core: 8 Depth Bottom of Layer(m): 175.10 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
70 12 18 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY DIAT BEARING NANNO OOZE
Screen Lith : CLAY MINERAL RICH NANNOFOSSIL OOZE
Leg : 28 Top/Bottom Interval(mm) : 230/1320 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 199.23 Age: MIOCENE
Core: 9 Depth Bottom of Layer(m): 200.32 Age:
Sect: 1 Thickness of Layer(m) : 1.09
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 3 97 1.56/ 68 111
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 1320/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 200.32 Age: MIOCENE
Core: 9 Depth Bottom of Layer(m): 200.50 Age:
Sect: 1 Thickness of Layer(m) : 0.18
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
2 9 89 1.58/ 67 19
Processing Hist: Classification was successful.
Shipboard Lith : CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 30/ 710 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 200.53 Age: MIOCENE
Core: 9 Depth Bottom of Layer(m): 201.21 Age:
Sect: 2 Thickness of Layer(m) : 0.68
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.58/ 67 72
Processing Hist:
Shipboard Lith : CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 710/1090 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 201.21 Age: MIOCENE
Core: 9 Depth Bottom of Layer(m): 201.59 Age:
Sect: 2 Thickness of Layer(m) : 0.38
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
2 7 91 1.59/ 66 41
Processing Hist: Classification was successful.
Shipboard Lith : CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 1090/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 201.59 Age: MIOCENE
Core: 9 Depth Bottom of Layer(m): 202.00 Age:
Sect: 2 Thickness of Layer(m) : 0.41
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 0 1.73/ 58 43
Processing Hist:
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 250/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 202.25 Age: MIOCENE
Core: 9 Depth Bottom of Layer(m): 203.50 Age:
Sect: 3 Thickness of Layer(m) : 1.25
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 11 89 1.74/ 57 130
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 1440/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 204.94 Age: MIOCENE
Core: 9 Depth Bottom of Layer(m): 205.00 Age:
Sect: 4 Thickness of Layer(m) : 0.06
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 89 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 1280/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 206.28 Age: MIOCENE
Core: 9 Depth Bottom of Layer(m): 206.50 Age:
Sect: 5 Thickness of Layer(m) : 0.22
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 89 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAY
Screen Lith : CLAY
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 206.60 Age: MIOCENE
Core: 9 Depth Bottom of Layer(m): 206.60 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 12 88 /
Processing Hist: Classification was successful.
Shipboard Lith : DIAT BEARING SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 00/ 620 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 228.00 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 228.62 Age:
Sect: 1 Thickness of Layer(m) : 0.62
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
18 8 75 1.62/ 64 66
Processing Hist: Classification was successful.
Shipboard Lith : CLAY NANNO OOZE
Screen Lith : CLAY MINERAL RICH NANNOFOSSIL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 620/ 680 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 228.62 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 228.68 Age:
Sect: 1 Thickness of Layer(m) : 0.06
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 75 1.67/ 61 6
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 680/1240 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 228.68 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 229.24 Age:
Sect: 1 Thickness of Layer(m) : 0.56
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
2 15 83 1.61/ 65 60
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 1240/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 229.24 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 229.50 Age:
Sect: 1 Thickness of Layer(m) : 0.26
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 12 88 1.70/ 60 27
Processing Hist: Classification was successful.
Shipboard Lith : CLAYEY SILT
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 00/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 229.50 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 231.00 Age:
Sect: 2 Thickness of Layer(m) : 1.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 16 84 1.70/ 60 158
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 00/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 231.00 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 232.50 Age:
Sect: 3 Thickness of Layer(m) : 1.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 84 1.71/ 59 159
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 00/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 232.50 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 234.00 Age:
Sect: 4 Thickness of Layer(m) : 1.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 21 79 1.75/ 57 159
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : DIATOM RICH CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 00/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 234.00 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 235.50 Age:
Sect: 5 Thickness of Layer(m) : 1.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 00/ 140 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 235.50 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 235.64 Age:
Sect: 6 Thickness of Layer(m) : 0.14
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 1.74/ 57 12
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 140/ 270 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 235.64 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 235.77 Age:
Sect: 6 Thickness of Layer(m) : 0.13
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 79 1.70/ 60 14
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 270/ 700 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 235.77 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 236.20 Age:
Sect: 6 Thickness of Layer(m) : 0.43
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 5 95 1.76/ 56 46
Processing Hist: Classification was successful.
Shipboard Lith : CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 700/1040 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 236.20 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 236.54 Age:
Sect: 6 Thickness of Layer(m) : 0.34
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 95 1.70/ 60 36
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 1040/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 236.54 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 237.00 Age:
Sect: 6 Thickness of Layer(m) : 0.46
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 95 1.78/ 55 49
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 237.10 Age: MIOCENE
Core: 10 Depth Bottom of Layer(m): 237.10 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
2 4 94 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 1230/1380 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 257.23 Age: MIOCENE
Core: 11 Depth Bottom of Layer(m): 257.38 Age:
Sect: 1 Thickness of Layer(m) : 0.15
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 8 92 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 1380/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 257.38 Age: MIOCENE
Core: 11 Depth Bottom of Layer(m): 257.50 Age:
Sect: 1 Thickness of Layer(m) : 0.12
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 92 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 257.60 Age: MIOCENE
Core: 11 Depth Bottom of Layer(m): 257.60 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 92 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 70/1500 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 284.57 Age: MIOCENE
Core: 12 Depth Bottom of Layer(m): 286.00 Age:
Sect: 1 Thickness of Layer(m) : 1.43
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 16 84 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: MIOCENE
Hole: 268 Depth Top of Layer(m) : 286.10 Age: MIOCENE
Core: 12 Depth Bottom of Layer(m): 286.10 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 12 89 /
Processing Hist: Classification was successful.
Shipboard Lith : DIATOM BEARING CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 750/ 930 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 304.25 Age: LOWER MIOCENE
Core: 13 Depth Bottom of Layer(m): 304.43 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.18
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 89 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 930/1070 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 304.43 Age: LOWER MIOCENE
Core: 13 Depth Bottom of Layer(m): 304.57 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.14
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 11 89 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 1070/1250 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 304.57 Age: LOWER MIOCENE
Core: 13 Depth Bottom of Layer(m): 304.75 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.18
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 89 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 1260/1350 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 304.76 Age: LOWER MIOCENE
Core: 13 Depth Bottom of Layer(m): 304.85 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.09
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 89 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 305.10 Age: LOWER MIOCENE
Core: 13 Depth Bottom of Layer(m): 305.10 Age: UPPER OLIGOCENE
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 6 94 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 1190/1340 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 323.69 Age: LOWER MIOCENE
Core: 14 Depth Bottom of Layer(m): 323.84 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.15
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 94 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 1340/1500 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 323.84 Age: LOWER MIOCENE
Core: 14 Depth Bottom of Layer(m): 324.00 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.16
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 1 99 /
Processing Hist: Classification was successful.
Shipboard Lith : CLAYEY SILT
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 324.10 Age: LOWER MIOCENE
Core: 14 Depth Bottom of Layer(m): 324.10 Age: UPPER OLIGOCENE
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Classification was successful.
Shipboard Lith : SILT
Screen Lith : CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 630/ 880 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 342.13 Age: LOWER MIOCENE
Core: 15 Depth Bottom of Layer(m): 342.38 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.25
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 880/ 930 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 342.38 Age: LOWER MIOCENE
Core: 15 Depth Bottom of Layer(m): 342.43 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.05
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYEY SILT
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 930/ 980 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 342.43 Age: LOWER MIOCENE
Core: 15 Depth Bottom of Layer(m): 342.48 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.05
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 980/1050 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 342.48 Age: LOWER MIOCENE
Core: 15 Depth Bottom of Layer(m): 342.55 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.07
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Classification was successful.
Shipboard Lith : CLAYEY SILT
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 1050/1170 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 342.55 Age: LOWER MIOCENE
Core: 15 Depth Bottom of Layer(m): 342.67 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.12
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 1170/1500 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 342.67 Age: LOWER MIOCENE
Core: 15 Depth Bottom of Layer(m): 343.00 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.33
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH MUD
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 343.10 Age: LOWER MIOCENE
Core: 15 Depth Bottom of Layer(m): 343.10 Age: UPPER OLIGOCENE
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 00/ 860 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 351.00 Age: LOWER MIOCENE
Core: 16 Depth Bottom of Layer(m): 351.86 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.86
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Classification was successful.
Shipboard Lith : CLAYSTONE
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENTSTONE
Leg : 28 Top/Bottom Interval(mm) : 860/1000 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 351.86 Age: LOWER MIOCENE
Core: 16 Depth Bottom of Layer(m): 352.00 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.14
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 1000/1120 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 352.00 Age: LOWER MIOCENE
Core: 16 Depth Bottom of Layer(m): 352.12 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.12
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYSTONE
Screen Lith : CLAYSTONE
Leg : 28 Top/Bottom Interval(mm) : 1130/1280 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 352.13 Age: LOWER MIOCENE
Core: 16 Depth Bottom of Layer(m): 352.28 Age: UPPER OLIGOCENE
Sect: 1 Thickness of Layer(m) : 0.15
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age: TERTIARY
Hole: 268 Depth Top of Layer(m) : 352.60 Age: LOWER MIOCENE
Core: 16 Depth Bottom of Layer(m): 352.60 Age: UPPER OLIGOCENE
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 1200/1300 Age: UPPER OLIGOCENE
Hole: 268 Depth Top of Layer(m) : 380.70 Age: UPPER OLIGOCENE
Core: 17 Depth Bottom of Layer(m): 380.80 Age:
Sect: 1 Thickness of Layer(m) : 0.10
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : MUDSTONE
Leg : 28 Top/Bottom Interval(mm) : 00/ 250 Age: UPPER OLIGOCENE
Hole: 268 Depth Top of Layer(m) : 381.00 Age: UPPER OLIGOCENE
Core: 17 Depth Bottom of Layer(m): 381.25 Age:
Sect: 2 Thickness of Layer(m) : 0.25
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : MUDSTONE
Leg : 28 Top/Bottom Interval(mm) : 250/ 320 Age: UPPER OLIGOCENE
Hole: 268 Depth Top of Layer(m) : 381.25 Age: UPPER OLIGOCENE
Core: 17 Depth Bottom of Layer(m): 381.32 Age:
Sect: 2 Thickness of Layer(m) : 0.07
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 320/ 450 Age: UPPER OLIGOCENE
Hole: 268 Depth Top of Layer(m) : 381.32 Age: UPPER OLIGOCENE
Core: 17 Depth Bottom of Layer(m): 381.45 Age:
Sect: 2 Thickness of Layer(m) : 0.13
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CLAYSTONE
Screen Lith : CLAYSTONE
Leg : 28 Top/Bottom Interval(mm) : 450/ 530 Age: UPPER OLIGOCENE
Hole: 268 Depth Top of Layer(m) : 381.45 Age: UPPER OLIGOCENE
Core: 17 Depth Bottom of Layer(m): 381.53 Age:
Sect: 2 Thickness of Layer(m) : 0.08
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 100 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 530/1370 Age: UPPER OLIGOCENE
Hole: 268 Depth Top of Layer(m) : 381.53 Age: UPPER OLIGOCENE
Core: 17 Depth Bottom of Layer(m): 382.37 Age:
Sect: 2 Thickness of Layer(m) : 0.84
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
1 6 93 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENTSTONE
Leg : 28 Top/Bottom Interval(mm) : 1370/1410 Age: UPPER OLIGOCENE
Hole: 268 Depth Top of Layer(m) : 382.37 Age: UPPER OLIGOCENE
Core: 17 Depth Bottom of Layer(m): 382.41 Age:
Sect: 2 Thickness of Layer(m) : 0.04
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 93 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 00/1500 Age: UPPER OLIGOCENE
Hole: 268 Depth Top of Layer(m) : 382.50 Age: UPPER OLIGOCENE
Core: 17 Depth Bottom of Layer(m): 384.00 Age:
Sect: 3 Thickness of Layer(m) : 1.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
4 0 96 1.51/ 71 134
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENTSTONE
Leg : 28 Top/Bottom Interval(mm) : 280/1500 Age:
Hole: 268 Depth Top of Layer(m) : 408.28 Age:
Core: 18 Depth Bottom of Layer(m): 409.50 Age:
Sect: 1 Thickness of Layer(m) : 1.22
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 96 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 00/1500 Age:
Hole: 268 Depth Top of Layer(m) : 409.50 Age:
Core: 18 Depth Bottom of Layer(m): 411.00 Age:
Sect: 2 Thickness of Layer(m) : 1.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 96 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : MUDSTONE
Leg : 28 Top/Bottom Interval(mm) : 00/1500 Age:
Hole: 268 Depth Top of Layer(m) : 411.00 Age:
Core: 18 Depth Bottom of Layer(m): 412.50 Age:
Sect: 3 Thickness of Layer(m) : 1.50
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENTSTONE
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age:
Hole: 268 Depth Top of Layer(m) : 412.60 Age:
Core: 18 Depth Bottom of Layer(m): 412.60 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 6 94 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENTSTONE
Leg : 28 Top/Bottom Interval(mm) : 110/1500 Age:
Hole: 268 Depth Top of Layer(m) : 436.61 Age:
Core: 19 Depth Bottom of Layer(m): 438.00 Age:
Sect: 1 Thickness of Layer(m) : 1.39
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 94 1.74/ 57 138
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : MUDSTONE
Leg : 28 Top/Bottom Interval(mm) : 00/ 740 Age:
Hole: 268 Depth Top of Layer(m) : 438.00 Age:
Core: 19 Depth Bottom of Layer(m): 438.74 Age:
Sect: 2 Thickness of Layer(m) : 0.74
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 15 86 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
Leg : 28 Top/Bottom Interval(mm) : 740/ 810 Age:
Hole: 268 Depth Top of Layer(m) : 438.74 Age:
Core: 19 Depth Bottom of Layer(m): 438.81 Age:
Sect: 2 Thickness of Layer(m) : 0.07
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 86 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 810/1330 Age:
Hole: 268 Depth Top of Layer(m) : 438.81 Age:
Core: 19 Depth Bottom of Layer(m): 439.33 Age:
Sect: 2 Thickness of Layer(m) : 0.52
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 86 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAY
Screen Lith : MUD
Leg : 28 Top/Bottom Interval(mm) : 1330/1500 Age:
Hole: 268 Depth Top of Layer(m) : 439.33 Age:
Core: 19 Depth Bottom of Layer(m): 439.50 Age:
Sect: 2 Thickness of Layer(m) : 0.17
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 86 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age:
Hole: 268 Depth Top of Layer(m) : 439.60 Age:
Core: 19 Depth Bottom of Layer(m): 439.60 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 86 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : MUDSTONE
Leg : 28 Top/Bottom Interval(mm) : 680/ 740 Age:
Hole: 268 Depth Top of Layer(m) : 465.68 Age:
Core: 20 Depth Bottom of Layer(m): 465.74 Age:
Sect: 1 Thickness of Layer(m) : 0.06
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
35 50 86 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : CHERT
Screen Lith : CHERT
Leg : 28 Top/Bottom Interval(mm) : 740/1500 Age:
Hole: 268 Depth Top of Layer(m) : 465.74 Age:
Core: 20 Depth Bottom of Layer(m): 466.50 Age:
Sect: 1 Thickness of Layer(m) : 0.76
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 86 /
Processing Hist: Data incomplete; interpretation allowed manual encoding.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : MUDSTONE
Leg : 28 Top/Bottom Interval(mm) : 00/ 970 Age:
Hole: 268 Depth Top of Layer(m) : 466.50 Age:
Core: 20 Depth Bottom of Layer(m): 467.47 Age:
Sect: 2 Thickness of Layer(m) : 0.97
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 0 100 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAYSTONE
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENTSTONE
Leg : 28 Top/Bottom Interval(mm) : 0/ 0 Age:
Hole: 268 Depth Top of Layer(m) : 468.10 Age:
Core: 20 Depth Bottom of Layer(m): 468.10 Age:
Sect: CC Thickness of Layer(m) : 0.00
Average Percent G.R.A.P.E. Avg # G.R.A.P.E.
Calcareous Siliceous Detrital Density/Porosity meas Avg'd
========== ========= ======== ================ ============
0 4 96 /
Processing Hist: Classification was successful.
Shipboard Lith : SILTY CLAY
Screen Lith : CLAY MINERAL RICH CLASTIC SEDIMENT
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Cite as: Deep Sea Drilling Project (1989): Archive of Core and Site/Hole Data and Photographs from the Deep Sea Drilling Project (DSDP). National Geophysical Data Center, NOAA. doi:10.7289/V54M92G2 [access date]
Please see NOAA's privacy and disclaimer information. Send questions or comments to mgg.info@noaa.gov.
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