Leg : 84 Top/Bottom Interval(mm): 20/ 0 Describer: Helm, R.
Hole: 566C Top of Core Depth(m) : 109.10 Rock Type: METAMORPHIC
Core: 5 Sample Midpoint(m) : 109.12 Sect/Pc #: 1/
ROCK = SERPENTINITE*
Groundmass - MAGNETITE
Alteration - CARBONATE ( 15%)
Location: SERP
DOLOMITE, BLOCKY, RHOMBS;
SERPENTINITE ( 60%)
SHEARED*
Leg : 84 Top/Bottom Interval(mm): 20/ 0 Describer: Ogawa, Y.
Hole: 566C Top of Core Depth(m) : 109.10 Rock Type: METAMORPHIC
Core: 5 Sample Midpoint(m) : 109.12 Sect/Pc #: 1/
ROCK = SERPENTINITE
ORIGINALLY HARZBURGITE;
Texture: FIBROUS, GRANULAR, COARSE*
Phenocrysts- ORTHOPYROXENE ( 10%)
OPAQUE MINERAL ( 25%)
Alteration - CARBONATE
Location: VEIN
SPORADIC*
Leg : 84 Top/Bottom Interval(mm): 100/ 120 Describer: Helm, R.
Hole: 566C Top of Core Depth(m) : 117.20 Rock Type: METAMORPHIC
Core: 6 Sample Midpoint(m) : 117.31 Sect/Pc #: 1/
ROCK = SERPENTINITE*
Phenocrysts- OLIVINE ( 15%)
CLINOPYROXENE ( 3%)
Size(mm): 2
DIOPSIDE;
CHROMITE ( 2%)
Size(mm): 0.5-2
PORPHYROCLASTIC;
ORTHOPYROXENE ( 10%)
Size(mm): 2 Morphology: BASTITE
PARTIALLY BASTITE, PORPHYROCLASTIC CPX
EXSOLUTION*
Groundmass - MAGNETITE ( 3%)
Alteration - CARBONATE ( TR%)
Replacing: SERPENTINITE
DOLOMITE;
SERPENTINITE
Replacing: OPX, OL
ZEOLITE ( TR%)
Replacing: OL
BRUCITE;
TALC ( 3%)
Replacing: SERP, OPX
Leg : 84 Top/Bottom Interval(mm): 310/ 330 Describer: Bloomer, S.
Hole: 566C Top of Core Depth(m) : 117.20 Rock Type: METAMORPHIC
Core: 6 Sample Midpoint(m) : 117.52 Sect/Pc #: 1/
ROCK = SERPENTINITE
SOURCE IS INITIAL REPORTS*
Groundmass - SERPENTINITE ( 75.2%)
OPAQUE MINERALS ( 0.2%)
BASTITE ( 18.3%)
OLIVINE ( 1.2%)
ORTHOPYROXENE ( 1.0%)
SPINEL ( 1.0%)
CLINOPYROXENE ( 2.9%)
VEINS;
OTHER ( 0.1%)
COMBINATION ( 0.2%)
INCLUDES TALC+TREMOLITE*
Leg : 84 Top/Bottom Interval(mm): 130/ 140 Describer: Bloomer, S.
Hole: 566C Top of Core Depth(m) : 126.90 Rock Type: METAMORPHIC
Core: 7 Sample Midpoint(m) : 127.04 Sect/Pc #: 1/
ROCK = SERPENTINITE
SOURCE IS INITIAL REPORTS*
Groundmass - SERPENTINITE ( 88.6%)
OPAQUE MINERALS ( 1.4%)
BASTITE ( 6.9%)
OLIVINE ( 0.0%)
ORTHOPYROXENE ( 0.0%)
SPINEL ( 0.1%)
CLINOPYROXENE ( 1.1%)
OTHER ( 1.9%)
VEINS, PERCENTAGES OBTAINED BY POINT COUNT*
Leg : 84 Top/Bottom Interval(mm): 0/ 0 Describer: Bourgois, J.
Hole: 566C Top of Core Depth(m) : 88.10 Rock Type: SEDIMENTARY
Core: H 2 Sample Midpoint(m) : 90.17 Sect/Pc #: CC/
ROCK = DRILLING BRECCIA
5% CARB, 25% PLAG, 1% MICA, 4% HEAVY MINS, 33%
VOLCANIC FRAG POSSIBLY ANDESITIC LAVA, 2% MAGN,
20% CARB IN MATRIX, LABRADORITE EXTINCTION ANGLE
33 DEGREES*
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