Leg : 13 Top/Bottom Interval(mm): 0/ 0 Describer: Hsu, K.
Hole: 134B Top of Core Depth(m) : 67.00 Rock Type: METAMORPHIC
Core: 1 Sample Midpoint(m) : 67.10 Sect/Pc #: CC/
ROCK = PHYLLITE
LAMINATED,DARK GRAY,SOURCE IS IR,THE MINERAL
ASSEMBLAGE SUGGESTS REXTLLIZATION UNDER LOW
GREENSCHIST FACIES CONDITIONS*
Groundmass - MAGNETITE
STREAKS SCATTERED THROUGHOUT,A PRIMARY SET OF
SCHISTOSITY IS PARALLEL TO THE COMPOSITIONAL
LAYERING WHILE ANOTHER SET OF FRACTURE CLEAVAGES
IS SUBPARALLEL TO SOME ANNEALED SHEARED FRACTURES
WHICH CUT THE BEDDING PLANE AT AN APPARENT ANGLE
OF 55 DEGREES,INDIVIDUAL LAMINAE RANGE FROM A
FRACTION OF A MILLIMETER TO A FEW MILLIMETERS
THICK*
Alteration - SERICITE
CHLORITE
UP TO .01MM FLAKES;
CLAY MINERALS
SILT
FINE SILT DETRITAL GRAINS,THESE MINERALS ARE THE
LIGHTER LAMINAE-THE DARKER ARE EVEN FINER IN GRAIN
SIZE*
Leg : 13 Top/Bottom Interval(mm): 0/ 1 Describer: Hsu, K.
Hole: 134B Top of Core Depth(m) : 67.00 Rock Type: METAMORPHIC
Core: 1 Sample Midpoint(m) : 67.00 Sect/Pc #: CC/
ROCK = METAGRAYWACKE AND PHYLLITE
INTERLAMINATED GRAYWACKE,SOURCE IS IR,THIS THIN
SECTION IS CUT FROM A SPECIMEN ADJACENT TO 134B-1-
CC,THE PHYLLITE IS SIMILAR TO 134B-1-CC,THIS
SAMPLE IS DESIGNATED PIECE A,THE METAGRAYWACKE
INCLUDES ANGULAR GRAINS OF QUARTZ(UP TO .03MM)
SCATTERED IN A SERICITIC-CHLORITIC MATRIX,ALSO
PRESENT IS A MODIFIED AND SHEARED BORING-TUBE
WHICH CUTS ACROSS THE BEDDING PLANE,BOTH SETS OF
SCHISTOSITY(PARALLEL AND INCLINED TO BEDDING)ARE
PRESENT*
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