Leg : 7 Top/Bottom Interval(mm): 0/ 0 Describer: Heath, R.
Hole: 61 Top of Core Depth(m) : 72.00 Rock Type: SEDIMENTARY
Core: 1 Sample Midpoint(m) : 75.10 Sect/Pc #: CC/
ROCK = SILTSTONE
WELL INDURATED FRAGMENTS,PARENT SEDIMENT WAS
BASICALLY PYROCLASTIC-A SILTY ASH WITH
INCORPORATED RADIOLARIANS AND PROBABLY SOME
PELAGIC CLAY*
Groundmass - FELDSPAR
Morphology: LATHS
PYROXENE
MAGNETITE
MAGN AND PYX PALE BROWN AND ONLY IN SOME
FRAGMENTS,COARSER GRAINS AND FRAGMENTS TEND TO BE
CONCENTRATED IN LAMINAE LESS THAN .1MM THICK*
Alteration - CHALCEDONY
Location: SCATTERED
.04-.07 AND RARELY TO .150MM UNFILLED AND INVERTED
RADIOLARIA(MOSAICS OF .005-.02MM PATCHES OF
CHALCEDONY FIBERS);
CHLORITE
Location: FRAGMENTS
PALAGONITE
ORANGE-BROWN OF SIMILAR SIZE TO FELDSPAR IN A
FINE SILICEOUS AND POSSIBLY ZEOLITIC CLAYEY
(MONTMORILLONITE?) MATRIX;
ZEOLITE
Location: MATRIX
POSSIBLY MONTMORILLONITE*
Leg : 7 Top/Bottom Interval(mm): 1070/ 0 Describer: Heath, R.
Hole: 61 Top of Core Depth(m) : 94.00 Rock Type: IGNEOUS
Core: 2 Sample Midpoint(m) : 96.57 Sect/Pc #: 2/
ROCK = DOLERITE-BASALT;
Texture: INTERSERTAL*
Groundmass - LABRADORITE
Size(mm): 1 Morphology: LATHS
APPROX COMP AN65 BY MICHEL-LEVY METHOD,USUALLY
TWINNED,RARELY ZONED-UNIFORM CHANGE TO SODIC RIMS,
MOST SHOW PARTIAL REPLACEMENT BY PALE GREEN
MONTMORILLONITE?(SWELLS WHEN WET) ALONG EDGES,
CLEAVAGES AND FRACTURES;
PYROXENE
Size(mm): .9 Morphology: EUHEDRAL-SUBHEDRAL PRISMS
PALE GRAYISH TO REDDISH BROWN,NON-PLEOCHROIC,
2V 60,PERHAPS AN IRON-POOR AUGITE;
MAGNETITE
Size(mm): 0.2 Morphology: EUHEDRAL GRAINS
ALSO PRESENT AS TINY WEDGES AND DUST IN THE NOW
ALTERED GROUNDMASS(.O1MM XTLS),
GROUNDMASS PROBABLY ORIGINALLY GLASSY IS LARGELY
FLAKES AND PINNATE MASSES OF GREEN AND BROWN
CHLORITE AND POSSIBLY MONTMORILLONITE WITH SOME
MICROLITES AND RARE BROWN HORNBLENDE BLADES;
HORNBLENDE ( .2%)
Morphology: BLADES
Alteration - CARBONATE
Location: VEINS
ZEOLITE
Location: VEINS
CHLORITE
Location: GROUNDMASS
GREEN AND LESSER BROWN;
MONTMORILLONITE
Location: GROUNDMASS,
Location: VESICLES
Vesicles -
Filling: MONTMORILLONITE
ACICULAR MONTMORILLONITE LINES VESICLES*
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