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Core data from the Ocean Drilling Program legs 101-129
leg : 107 section: 01 unit/subunit :
hole: 0651A top int: 0 cm observer code: DU
core: 042R pieces : 1 - 22.
rock name: ALTERNATIONS OF GRAY TO PINK DOLOMITE/LIMESTONES AND BASALT.
contact : see comments
***** MAIN COMMENTS *****
Piece 4, altered basalt; Pieces 5-8, dolomitic breccias with minor basaltic
component; Pieces 9-10, dolomitic breccias; Piece 11, basalt with glassy
margin; Pieces 12-16, dolomitic breccia with minor basaltic component;
Piece 17, basalt; Piece 18, light, reddish-brown dolomite; Piece 19, highly
altered basalt; Piece 20, light, reddish-brown dolomite; Piece 21, highly
altered basalt.
***** PHENOCRYSTS *****
see comments
***** GROUNDMASS *****
see comments
***** COLOR *****
see comments
***** VESICLES *****
see comments
***** STRUCTURE *****
see comments
***** ALTERATION *****
see comments
***** VEINS/FRACTURES *****
see comments
leg : 107 section: 02 unit/subunit :
hole: 0651A top int: 0 cm observer code: DU
core: 042R pieces : 1 - 10.
rock name: ALTERNATIONS OF GRAY TO PINK, BRECCIATED DOLOMITE/LIMESTONE
AND BASALT.
contact : see comments
***** MAIN COMMENTS *****
Piece 1, basalt with relatively fresh glassy margin; crack in margin is
filled by dolomite breccia; Pieces 4, 7, 8, breccias of basalt and
dolomite; Piece 6, highly altered basalt; Piece 9, basalt. Intergranular
texture. Olivine and Ca-plagioclase microlites in altered groundmass.
***** PHENOCRYSTS *****
see comments
***** GROUNDMASS *****
see comments
***** COLOR *****
see comments
***** VESICLES *****
see comments
***** STRUCTURE *****
see comments
***** ALTERATION *****
see comments
***** VEINS/FRACTURES *****
see comments
leg : 107 section: 01 unit/subunit :
hole: 0651A top int: 0 cm observer code: BDC
core: 043R pieces : 1 - 15
rock name: ALTERED APHANITIC BASALT
contact : see comments
***** MAIN COMMENTS *****
Intergranular to intersertal texture. Pseudomorphs after olivine in an
altered groundmass. Carbonate veins (become less abundant down section).
Some chilled margins. Rare vesicles. 107-651A-43R-1, Pieces 9a and 10d are
carbonate cemented basaltic breccias in contact with chilled glass margins.
Also 107-651A-43R-2
***** PHENOCRYSTS *****
see comments
***** GROUNDMASS *****
see comments
***** COLOR *****
see comments
***** VESICLES *****
see comments
***** STRUCTURE *****
see comments
***** ALTERATION *****
see comments
***** VEINS/FRACTURES *****
see comments
leg : 107 section: 01 unit/subunit :
hole: 0651A top int: 0 cm observer code: DU
core: 046R pieces : All
rock name: HIGHLY ALTERED APHANITIC BASALT.
contact : see comments
***** MAIN COMMENTS *****
Intergranular texture. Porphyroclasts of Ca-plagioclase and olivine in
altered groundmass. Local vesicles. 107-651A-47R-1, Piece 9 is a basaltic
breccia. Some chilled margins. Some carbonate crusts. The above
descriptions are applied from 107-651A-46R to 107-651R-49R.
***** PHENOCRYSTS *****
see comments
***** GROUNDMASS *****
see comments
***** COLOR *****
see comments
***** VESICLES *****
see comments
***** STRUCTURE *****
see comments
***** ALTERATION *****
see comments
***** VEINS/FRACTURES *****
see comments
leg : 107 section: 01 unit/subunit :
hole: 0651A top int: 0 cm observer code: DU
core: 050R pieces : All
rock name: INTERCALATED LAYERS OF DIABASE AND LEUCOCRATIC FELDSPATHIC
ROCKS, EXCEPT FOLLOWING POINTS.
contact : see comments
***** MAIN COMMENTS *****
107-651A-50R-1, Pieces 1,2 and 3: Serpentinized peridotite; 107-651A-51R-1,
Piece 17: Serpentinized peridotite; 107-651A-50R-1, Piece 6: Pale yellow to
brown dolomite; 107-651A-52R-1, Pieces 19 and 20: altered yellowish basalt;
107-651A-52R-1, Pieces 21 and 22: Carbonate cemented basaltic breccia.
***** PHENOCRYSTS *****
see comments
***** GROUNDMASS *****
see comments
***** COLOR *****
see comments
***** VESICLES *****
see comments
***** STRUCTURE *****
see comments
***** ALTERATION *****
see comments
***** VEINS/FRACTURES *****
see comments
leg : 107 section: 01 unit/subunit : 0003
hole: 0651A top int: 0 cm observer code: DU
core: 053R pieces : All
rock name: ALTERNATIONS OF ALTERED BASALT AND BASALTIC BRECCIA CEMENTED
BY CARBONATE.
contact : see comments
***** MAIN COMMENTS *****
Basalt contains Ca-plagioclase and pseudomorphs after olivine in an altered
groundmass. Former glass margins are observed occasionally.
***** PHENOCRYSTS *****
see comments
***** GROUNDMASS *****
see comments
***** COLOR *****
see comments
***** VESICLES *****
see comments
***** STRUCTURE *****
see comments
***** ALTERATION *****
see comments
***** VEINS/FRACTURES *****
see comments
leg : 107 section: 01 unit/subunit : 0004
hole: 0651A top int: 0 cm observer code: DU
core: 056R pieces : All
rock name: HIGHLY SHEARED AND FOLIATED SERPENTINIZED PERIDOTITE.
contact : see comments
***** MAIN COMMENTS *****
Rock is criss-crossed by white veins of chrisolite. 107-651A-56R-1, Piece 2
contains small pebbles of garnet-bearing rock. All measured microstructures
are related to the section plane which has been chosen perpendicular to the
S1 dip.
***** PHENOCRYSTS *****
see comments
***** GROUNDMASS *****
see comments
***** COLOR *****
see comments
***** VESICLES *****
see comments
***** STRUCTURE *****
see comments
***** ALTERATION *****
see comments
***** VEINS/FRACTURES *****
see comments
leg : 107 section: 01 unit/subunit : 0004
hole: 0651A top int: 0 cm observer code: DU
core: 058R pieces : All
rock name: N/A
contact : see comments
***** MAIN COMMENTS *****
107-651A-58R-1, Piece 1 is foliated granodiorite. The remainder of the core
is criss-crossed by white veins of chrysolite. All measured microstructures
are related to the section plane which has been chosen perpendicular to S1
dip. Interval 107-651A-58R-4, 98 to 102 cm, brackets a fault plane parallel
to the section plane. Dip is 50 degrees, slickensides pitch is 60 degrees.
Interval 107-651A-58R-4, 0-15 cm brackets a fault plane dipping 65 degrees,
slickensides pitch is 70 degrees.
***** PHENOCRYSTS *****
see comments
***** GROUNDMASS *****
see comments
***** COLOR *****
see comments
***** VESICLES *****
see comments
***** STRUCTURE *****
see comments
***** ALTERATION *****
see comments
***** VEINS/FRACTURES *****
see comments
introduction | data types | geographic areas | legs/sites/holes | sites/holes
These Web pages are from the Core Data from the Ocean Drilling Program Legs 101-129 CD-ROM produced in 2001 by the U.S. Department of Commerce, National Oceanic and Atmospheric Administration, National Environmental Satellite, Data, and Information Service, National Geophysical Data Center, and collocated World Data Center for Marine Geology and Geophysics, Boulder. Data were compiled in cooperation with the U.S. Science Support Program, the Joint Oceanographic Institutions, Inc., and the U.S. National Science Foundation. Please see the NGDC privacy, disclaimer, and copyright notices. Additional ocean drilling data are available from NGDC and from the ODP/IODP.
questions to: carla.j.moore@noaa.gov