leg site hole core coretype section top interval unit number sub unit pieces observer rockname color layering deformation primary mineral name (1) primary percent (1) primary size (1) primary shape (1) primary orientation (1) primary replacement (1) primary description (1) primary mineral name (2) primary percent (2) primary size (2) primary shape (2) primary orientation (2) primary replacement (2) primary description (2) primary mineral name (3) primary percent (3) primary size (3) primary shape (3) primary orientation (3) primary replacement (3) primary description (3) primary mineral name (4) primary percent (4) primary size (4) primary shape (4) primary orientation (4) primary replacement (4) primary description (4) primary mineral name (5) primary percent (5) primary size (5) primary shape (5) primary orientation (5) primary replacement (5) primary description (5) primary comments secondary percent secondary texture secondary veins secondary comments main comments more data latitude longitude depth top interval depth below sea floor 109 670 A 001 Positive Displacement 01 000 0001 1,2,and4 KUE PIECE 1: DRILL CUTTINGS(SERPENTINIZED HARZBURGITE). PIECES 2 AND 4: SERPENTINIZED HARZBURGITE. n/a Massive, non-layered. None apparent in sample. Olivine 89% 0.01-1.0 mm Polygonal Not apparent See description Replacement: 100% with serpentine, magnetite, and carbonate. Orthopyroxene 10% 1.0-5.0 mm Elliptical to lensoid. Not apparent 60% with serpentinite + talc. Spinel 1% < 1 mm lensoid Not apparent None apparent Elliptical to lensoi 95% Pseudomorphic replacement of orthopyroxene with serpentine (bastite)-rimmed talc. Mesh texture serpentine + magnetite + minor carbonate replacing olivine. 5% of sample, veins < 0.5 mm thick. Chrysotile fibers oriented perpendicular to vein lengths, carbonate in veins is massive. common magnetite-filled veins. no 23.16658 -45.03217 0006.40 000640 109 670 A 002 Positive Displacement 01 000 0001 1-13 KUE PIECES 1-6 AND 8-12: SERPENTINIZED HARZBURGITE Green No primary layering Well-defined foliation planes defined by preferred orientation of orthopyroxene porphyroclasts set in serpentinized olivine matrix; orthopyroxene is lens-shaped. Olivine 89% < 1 mm Polygonal Not apparent 100% with serpentine and magnetite. Orthopyroxene 10% 1-5 mm Lens, elongate Yes, along foliation planes. 60% with serpentine and talc. Spinel 1% 0.5 mm See description Noted below Approximately 1% with magnetite Shape: Lens-like, blocky;fragments elongate parallel to the foliation plane. Lens, elongate 95% Pseudomorphic replacement of orthopyroxene with serpentine and rim of talc, mesh texture replacement of olivine with serpentine, magnetite, and carbonate. 1%, < 1 mm thick. Carbonate, magnetite, and serpentine; serpentine is fibrous; carbonate and magnetite are massive. Piece 13: drill cuttings (serpentinized harzburgite). no 23.16658 -45.03217 0016.80 001680 109 670 A 003 Wash Core 01 010 0001 2and3 KUE PIECE 2: SERPENTINIZED HARZBURGITE. PIECE 3: ASSORTED RUBBLE. Green gray No primary layering. None apparent. Olivine 90 < 1 mm Polygonal Not apparent 100% with serpentine + magnetite. Orthopyroxene 7-10 1-4 mm Round to elliptical. Not apparent. 60% with serpentine + talc. Spinel ~1 n/a Lens-like, blocky fragments, elongate. Not apparent. Approximately 1% by magnetite. Round to elliptical. 95% Pseudomorphic replacement of orthopyroxene with serpentine and rim of talc; mesh texture replacement of olivine with serpentine, magnetite, and carbonate. 1-2%, < 1 mm thick. Carbonate, magnetite, serpentine (chrysotile), chlorite(?), undetermined texture filling. Piece 3 comprises: Serpentinized harzburgite- 5 pieces, same as piece 2. Sparsely plagioclase-olivine phyric basalt- 1 piece of rubble, similar to Piece 1. Aphyric basalt- One 13 x 7 mm piece of hydrothermally-altered aphyric basalt containing quartz and zeolite veins, groundmass strongly and pervasively altered to chlorite (?). no 23.16658 -45.03217 0007.00 000710 109 670 A 004 Wash Core 01 000 0001 1-4 KUE SERPENTINIZED HARZBURGITE Dark to light green. No apparent primary layering. Foliation defined by elliptical orthopyroxene porphyroclasts, inclination of foliation indeterminate. Olivine 84-94 < 1 mm Polygonal Not apparent 100% with serpentine,talc, and carbonate Orthopyroxene 5-15 0.3-1.2 mm Round to elliptical See description 60% with serpentine and talc. Orientation: Long axes of elliptical orthopyroxene are aligned. Spinel 1 0.1-0.5 mm Blocky, elongate See description < 5% with magnetite Orientation: Grains are elongated in same orientation as elliptical orthopyroxene. Round to elliptical 87-93 Serpentine mesh texture after olivine, basite pseudomorphing orthopyroxene, talc + serpentine halos around orthopyroxene. 1-2%, average < 1 mm thick with one vein 1-2 mm thick. Veins filled by one or more of carbonate, magnetite, and serpentine; thick vein in Piece 4B is deformed in same sense as defined by orthopyroxene grains. no 23.16658 -45.03217 0026.30 002630 109 670 A 005 Rotary 01 014 0002 3-17 KUE SERPENTINIZED PERIDOTITE Black to green No primary layering apparent. Foliation defined by elongate orthopyroxene, foliation inclined at approximately 20 degree from horizontal. Olivine 95 Indeterminate in hand seciman. Indeterminate in hand specimen. Not apparent. See description Description: 100% with serpentine + talc + carbonate. Orthopyroxene 0-4 0.8-1.6 mm Elongate to elliptical. Defined by long axes of elongate opx See description Description: 0-100% with serpentine +talc. Spinel n/a n/a n/a n/a n/a Not apparent (see 109-670A-5R-02). d specimen. Elongate to elliptic ? Distinctive "tortoise-shell" texture developed throughout unit, polygonal domains in texture are defined by crosscutting black hands, possibly serpentine filled; within polygonal domains, concentric elliptical rings are defined by alternating bands of light to dark green minerals. 1-10%, 1-4 mm thick. Total percent secondary minerals: 96-100%. Dark bands defining polygonal domains 1-4 mm thick, centers of dark bands contain white to light green mineral, Piece 16 has a greater concentration of bands filled with light green mineral. 109-670A-5R-1, Unit 1: serpentinized harzburgite. Pieces 1 and 2: Similar to other samples from Unit 1. no 23.16658 -45.03217 0045.20 004534 109 670 A 005 Rotary 02 000 0002 1-7 KUE PIECES 1-3 AND 5-7:SERPENTINIZED PERIDOTITE. PIECE 4:SERPENTINIZED PERIDOTITE,BUT PIECE 4 WITH THE FOLLOWING DIFFERENCES n/a n/a n/a Spinel < 1 Approximately 1 mm long Blocky to elonagte. May be defined by spinel layer. Not apparent. n/a Pieces 1-7 as in 109-670A-5R-01. no 23.16658 -45.03217 0046.70 004670 109 670 A 005 Rotary 02 062 0003 8-19 KUE HARZBURGITE Green No primary layering apparent. Foliation defined by elongate orthopyroxene grains, foliation ap ears to be near horizontal. Olivine 82-95 < 2 mm Polygonal Not apparent in hand specimen. Approximately 90%. Orthopyroxene 5-15 0.5-1.6 cm. Round to elongate. See description 0-10% with serpentine + magnetite +talc. Orientation: Defined by elongate orthopyroxene where present. Clinopyroxene 0-2 3 mm Rounded Not apparent. See description Replacement: 0-10% with pale green alteration assemblage. Spinel 0-1 Round to elongate. Blocky to elongate. May be defined by elongate spinel. < 5% with magnetite. 90% Mesh texture serpentine replacing olivine, fibrous bastite replacing orthopyroxene, magnetite rimming spinel, also dark halos around orthopyroxene. < 1%, 1-2 mm thick. Veins filled by massive magnetite + serpentine; also white veins filled by fibrous material, possibly chrysotile. no 23.16658 -45.03217 0046.70 004732 109 670 A 006 Rotary 01 000 0003 1-10 KUE HARZBURGITE Green Not apparent in hand specimen. Weak foliation defined by long axes of slightly elongate orthopyroxene grains, inclination approximately 20 degree from horizontal. Olivine 80-95 < 0.2 mm Round Not apparent. See description Replacement: Approximately 90% with serpentine + magnetite + talc. Orthopyroxene 5-15 Most are 0.6-0.8 cm, ange is 0.1-3.6 cm. See description See description Approximately 10% by bastite Shape: Most round to slightly elongate, some very elongate. Orientation: Weak foliation defined by long axes of elongate grains. Clinopyroxene 1-4 0.1-0.4 mm Round Not apparent. Indeterminate in hand specimen. Spinel 1-2 See description Round to elongate, often blocky. See description 1-5% with magnetite. Orientation: Weakly aligned with elongate orthopyroxene. 60% Olivine replaced by serpentine, magnetite, and talc in mesh texture; orthopyroxene partially pseudomorphed by bastite; spinel rimmed by magnetite. < 1%, 1-2 mm thick. Veins are black, possibly magnetite filled. no 23.16658 -45.03217 0054.60 005460 109 670 A 007 Rotary 01 000 0003 1-5 KUE HARZBURGITE Green Piece 1 contains layering defined by concentration of orthopyroxene.Thickness: Indeterminate. Azimuth and dip: Indeterminate. Modal layering: Defined by alternating orthopyroxene-rich and olivine-rich layers. Sequence and abundance: Indeterminate. Contact: Sharp. Foliation defined by long axes of tabular orthopyroxene grains. Piece 1: Foliation defined by disaggregated and drawn out spinel, and by elongated serpentine halos which extend from orthopyroxene. Olivine 85-95 < 0.2 mm Round Not apparent. See description Replacement: Approximately 70% with talc + serpentine + magnetite. Orthopyroxene 3-10 As large as 8 mm. Round to elliptical. See description 0-10% with talc, serpentine. Orientation: Defined by long axes of elliptical orthopyroxene grains, weak. Clinopyroxene 1-4 As large as 4 mm. Round. Not apparent. 0%, looks fresh. Spinel 1 Round to elliptical. Blocky to elliptical See description < 5% with magnetite. Orientation: Defined by long axes of some elliptical spinel grains. 70 Olivine replaced by serpentine, magnetite, and talc in a mesh texture; orthopyroxene pseudomorphed by bastite and rimmed by talc; spinel rimmed by magnetite. < 1%, < 1 mm thick. Most veins are black, possibly magnetite filled; some veins filled by white material, possibly chrysotile. no 23.16658 -45.03217 0064.00 006400 109 670 A 007 Rotary 01 029 0004 6-13 KUE SERPENTINITE Black and white mottled. Not apparent. Possible shear zones between Pieces 7A and 7C and between 13B and 13D; parts of Piece 6 were embedded in sheared matrix material. Material was removed and replaced with Pieces 7B, 13C, and 6B, respectively. Piece 6: Serpentine-rich material consisting of massive light green fibers surrounding pieces. Pieces 7A and 7C: Separated by a massive serpentine vein approximately 1.5 cm thick consisting of light green serpentine needles > 1 cm in length; both pieces contain talc + serpentine-rich layer on one side which defines the boundary of the shear zone. Olivine 95 Indeterminate in hand specimen. Can't be determined in hand specimen. Not apparent. See description Replacement: 100% with serpentine, talc, and magnetite. Orthopyroxene 4-5 2-6 mm Round Not apparent. See description Replacement: As much as 90% with serpentine + talc. Spinel 1- <1 < 1 mm Round to elliptical. See orientation As much as 10%, rimmed with magnetite. Orientation: Piece 10 defined by long axes of elliptical spinel grains. Clinopyroxene < 1 in hand specimen. Round Round Not apparent. 0%, fresh. 99 Olivine replaced by alternating bands of dark and light secondary phases, orthopyroxene pseudomorphed by bastite and rimmed by talc, spinel rimmed by magnetite. As much as 5% in rock pieces, 1 mm to 2 cm thick. White talc veins as wide as 1 mm, blue-green opaline serpentine veins 2 mm wide, rich veins in Pieces 6-7 and 13 (see deformation section for description) Piece 13: Massive serpentine-rich zones between Pieces 13A, 13B, and 13D, similar to those found between 7A and 7C. No apparent foliation defined by elongate minerals. Note: Shading on graphic representation denotes freeze-dried vein material in correct stratigraphic position. no 23.16658 -45.03217 0064.00 006429 109 670 A 008 Rotary 01 000 0005 1-5 KUE HARZBURGITE Green Not apparent. Defined by elongated orthopyroxene in Piece 1. Olivine 90 < 1 mm Round Not apparent See description Replacement: As much as 80% with serpentine + magnetite. Orthopyroxene 5-15 3-6 mm Round to elliptical and elongate. See description 1-20% by bastite. Orientation: Defined by long axes of elongate orthopyroxene in Piece 1. Clinopyroxene 1-2 1-2 mm Round Not apparent Fresh Spinel 1 Round to elliptical Blocky to elliptical. See description < 5% with magnetite. Orientation: Defined by long axes of elliptical spinel grains. 50-70 Mesh texture serpentine, magnetite replacing olivine, bastite pseudomorphing orthopyroxene, magnetite rims to spinel. < 1%, < 1 mm thick. Black magnetite-filled veins, and short (< 3 mm) serpentine-filled white veins. no 23.16658 -45.03217 0073.50 007350 109 670 A 009 Rotary 01 000 0006 1,3,9and12 KUE SERPENTINIZED HARZBURGITE Green to black-green No primary layering apparent. Foliation defined by long axis of tabulated orthopyroxene. Olivine 80-90 2-4 mm in Piece 1, <0.2 mm in others Elongated in Piece 1. Not apparent. See description Replacement: 50% with serpentine, magnetite, and talc in Piece 1; approximately 70% with same minerals in other pieces. Orthopyroxene 7-18 As large as 10 mm Round to tabular. See description 10-20% by talc and serpentine. Orientation: Defined by long axes of elliptical orthopyroxene grains. Clinopyroxene 1-2 As large as 3 mm Blocky to round. Not apparent. See description Replacement: 5-10% with serpentine, talc, and possible chlorite. Spinel 1 . Round to tabular. Blocky Not apparent. 0-5% with magnetite. Olivine: 2-4 mm in Piece 1, < 0.2 mm in other pieces 64 Olivine replaced by serpentine, magnetite, and talc in a mesh structure; orthopyroxene pseudomorphed by bastite; clinopyroxene replaced by serpentine, talc, and possibly chlorite. Approximately 2%, as large as 1 mm thick. Most veins are black, possible magnetite-filled; some veins are filled by pale green material (probably serpentine + talc). no 23.16658 -45.03217 0083.00 008300 109 670 A 009 Rotary 01 000 0006 2,4-8,10,11,13,and14 KUE SERPENTINITE. Mottled black and white. No primary layering apparent. Not apparent except for in Piece 14 where a 1-2 cm-wide sheared zone exists, filled with antigorite, carbonate, and tremolite. Olivine 95-99 Indeterminate in hand specimen. Indeterminate in hand specimen. Not apparent. See description Replacement: 100% with serpentine, magnetite, talc, and carbonates. Orthopyroxene 0-4 As large as 4 mm Tabular. Not apparent. 70-100% by bastite. Spinel 1 1-2 mm Blocky to rounded. Not apparent. Fresh. d specimen. Tabular. 99% Distinctive "tortoise-shell" texture, except for Piece 8 which has a net texture; polygonal domains are defined by black serpentine minerals. Pieces 6, 10, and 14: 5-20%, as large as 1 cm. Filled with light-colored serpentine mineral, possibly antigorite (Pieces 6, 10, and 14); Piece 14 also contains veins composed of tremolite, carbonate, and antigorite; Piece 11 contains clay plus sheet silicate-rich matrix containing rubble. 109-670A-10W-1: drill cuttings: serpentinite, harzburgite, hyaloclastite, basalt, and serpentine minerals. 109-670A-10W-2: drill cuttings: serpentinite, harzburgite, hyaloclastite, basalt, and serpentine minerals. no 23.16658 -45.03217 0083.00 008300