Leg : 14 Top/Bottom Interval(mm): 80/ 600 Analyst: Benson, W.E.
Hole: 136 Sample Midpoint (m) : 308.60
Core: 9 Top of Core Depth (m) : 308.00
Sect: 1 Top of Section Depth(m): 308.08
LITHOLOGY: BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : MOST OF THE BASALT IS BARELY PHANERITIC UNDER THE
HAND LENS, A FEW FRAGMENTS CONTAIN MICROPEGMATITE
AREAS, MORE VARIATION IN GRAIN SIZE SEEN IN
FRAGMENTS RECOVERED AT THE BOTTOM OF THE
BARREL THAN IN PCES RECOVERED FIRST WHICH
ARE NEARLY UNIFORM HARD BASALT, CRYSTALS
VISIBLE UNDER 10X HAND LENS;
Structure : UNIFORM BASALT, SECONDARY VEINLETS OF CALCITE
CUT THE CORE AT VARYING ANGLES TO THE AXIS, PYRITE I
ASSOCIATED WITH THE VEINLETS, CHALCOPYRITE IS
PRESENT IN LESSER AMOUNTS IN A FEW OF THE VEINLETS
ASSOCIATED WITH THE PYRITE AND CALCITE, SMALL
VEINLET IN A FEW FRAGMENTS;
Comments : CORE 9 CONSISTS ENTIRELY OF BASALT INCLUDING ONE PCE
OF SOLID CORE SOME 15CM LONG AND SEVERAL OTHER LARGE
CORE FRAGMENTS THAT CAN BE FITTED TOGETHER, IN
ADDITION ARE A LARGE NUMBER OF SMALLER FRAGMENTS
RANGING FROM A FEW MM TO SEVERAL CM ACROSS, THE
CORE FRAGMENTS THAT FIT TOGETHER AND A FEW OF THE
SMALLER PIECES WERE RECOVERED AT THE END OF THE CORE
RUN JUST AFTER MIDNIGHT (0020HRS, 19 OCT), THEY ARE
FROM THE CORE CATCHER AND BOTTOM OF THE BARREL, THE
SOLID CORE AND MOST OF THE LARGER FRAGMENTS WERE
RECOVERED FROM THE DRILL BIT AND BOTTOM ASSEMBLY
AFTER THE PIPE WAS TRIPPED (1900HRS, 17 OCT.);
Vesicles :
Location: Filling: CALCITE,PYRITE
Shape : ROUND
Location: Filling: ZEOLITE OR SMEC
CALCITE FILLS SOME OF THE FEW ROUND VESICLES,
PYRITE IS ASSOCIATED WITH THE VESICLES, OTHER
VESICLES ARE FILLED WITH TWO SECONDARY MINERALS -
AN OUTER RIM OF DARK GREENISH GRAY AND A CORE OF
LIGHT GREEN, NONE OF THESE WERE SEEN IN THE THIN
SECTIONS AND THEY REMAIN UNIDENTIFIED, THEY MAY BE
ZEOLITES BUT THEY LOOK LIKE ONE OF THE SMECTITE
GROUP;
Groundmass : PLAGIOCLASE
Size(mm): TO 2
PLAG TO 2MM LONG IN MICROPEGMATITE AREAS;
PYROXENE
BIOTITE
IN MICROPEGMATITE AREAS, COATED WITH BIOTITE
(HEAVILY ALTERED WHEN VIEWED UNDER THE
MICROSCOPE) THAT SEEMS TO BE ATTACHED TO PYX,
COMMONLY A THIN PATCHY FILM OF PYRITE COATS THE
BIOTITE;
Replacement: CALCITE
PYRITE
PYRITE IS ASSOCIATED WITH CALCITE IN BOTH THE
VEINLETS AND THE VESICLES AND SEEMS TO BE SLIGHTLY
LATER IN ORIGIN, PYRITE IS ALSO PRESENT AS
DISSEMINATED GRAINS, ESPECIALLY NEAR THE VEINLETS;
CHALCEDONY
PRESENT IN LESSER AMOUNTS IN A FEW OF THE
VEINLETS, ASSOCIATED WITH THE PYRITE AND CALCITE;
ZEOLITE
ID UNCERTAIN, FILLING VESICLES, DARK GREENISH
GRAY OR LIGHT GREEN;
SMECTITE
ID UNCERTAIN, FILLING VESICLES, DARK GREENISH GRAY
OR LIGHT GREEN;
Leg : 14 Top/Bottom Interval(mm): 0/ 0 Analyst: Benson, W.E.
Hole: 136 Sample Midpoint (m) : 309.60
Core: 9 Top of Core Depth (m) : 308.00
Sect: CC Top of Section Depth(m): 309.60
LITHOLOGY: BASALT;
Piece No. : PCE NO PCE NUMBERS ASSIGNED;
Texture : MORE VARIATION IN GRAIN SIZE SEEN IN CORE
CATCHER THAN IN THE PCES FIRST RECOVERED
WHICH ARE UNIFORM HARD BASALT, CRYSTALS
VISIBLE UNDER 10X HAND LENS;
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