Initial Reports, Volume 206 Ms 206IR-102 Chapter 2, Table T8. Breccia log, Hole 1256D. Notes: A = angular, sA = subangular, R = rounded, sR = subrounded. M = monomictic, P = polymictic.Cr = crushing, Ve = veining, Fr = fracturing, Sh = shearing. wS = well sorted, mS = moderately sorted, pS = poorly sorted. Cg = coarse grained (>5 mm), Mg = medium grained (1-5 mm), Fg = fined grained (<1 mm). Po = preferred orientation. sap = saponite. Core Section Piece Oriented? Clasts: Volume (%) Size range (min-max; mm) Shape Composition Internal structure Alteration Sorting Matrix: Volume (%) Grain size Composition Structure Alteration Cement: Volume (%) Composition Comments 206-1256D- 20R 1 6 Y 60 2-30 A-sA P Y pS 40 Fg sap+/-glass Ve P: basalt and glass; shear vein in matrix 20R 1 7 Y 60 2-30 A-sA P Y pS 40 Fg sap+/-glass Ve P: more basaltic than glassy clasts 21R 1 16 Y 80 <1-5 sA-sR P Y wS 20 Fg sap+white min. hyaloclastite 21R 1 17 Y 80 <1-5 sA-sR P Y wS 20 Fg sap+white min. hyaloclastite 21R 1 18 Y 80 <1-5 sA P Ve Y pS 20 Fg sap+white min. concretionary alteration mineral replacing glass shards 21R 1 19 Y 90 <1-5 P pS 20 Fg sap+/-glass 21R 1 20 Y 90 <1-5 sA P Ve Y pS 10 Fg sap+/-glass 21R 1 22 Y 60 <10 A P pS 40 Fg sap+/-glass P: glassy shards, some lithic basalt clasts 21R 2 1 Y 80 1-10 sR P Ve Y pS 20 Fg sap+white min. 21R 2 2 N 80 1-10 sR P Ve Y pS 20 Fg sap+white min. 21R 2 3 N 80 1-10 sR P Y pS 20 Fg sap+white min. 21R 2 4 Y 80 1-10 sR P Y pS 20 Fg sap+white min. 21R 2 5 N 80 1-5 sR P Y pS 20 Fg sap+white min. 21R 2 6 Y 90 1-20 sR-A P Ve Y pS 10 Fg saponite 21R 2 7 Y 90 1-20 sR-A P Ve Y pS 10 Fg saponite 26R 2 3 Y 95 1-30 sR-sA P Ve-Fr Y pS 5 Fg saponite Y 2 silica glass-basalt cryptocr./aphyric, altered glass 26R 2 4 Y 95 1-40 A-sA P Ve Y pS 7 Fg sediment+silica+saponite 1 silica basalt with crystal clots 30R 1 1 N 80 1-20 sR-sA P Y pS 20 Fg sap+white Ve N P: lithic basalt+glass 30R 1 2 Y 90 1-25 sA-sR P Ve-Fr Y pS 10 Fg sap Ve-Fr Y P: lithic basalt+glass 30R 1 3 N 90 1-35 sR P Ve-Fr Y pS 10 Fg sap Fr Y altered glassy shards 30R 1 5 N 90 1-22 sR P Ve-Fr Y pS 10 Fg sap Fr N altered glassy shards 30R 1 6 N 70 1-10 sA-sR M Fr N Ms 30 Fg sap Fr Y 43R 1 2 N 80 1-8 A-sA M Y mS 20 Fg sap Fr N clasts:fresh glass and altered glass shards 43R 1 3 contact between aphyric basalt (clast?) with spherulites and breccia with glass clasts and altered glassy shards. 43R 1 4 contact between aphyric basaltic clasts, veined (1 mm dark green veins), and glassy clasts (1-2 mm) englobed in saponite Fg matrix 44R 1 11 80 1-3 A-sR P Ve,Cr Y pS 20 Fg saponite Fr Y basalt and glass clasts 44R 1 14 contact betweenaphyric basalt (clast?), veined and crushed, and breccia (clasts: fresh glass, altered glassy shards and aphyric basalt; matrix: saponite) 45R 1 4 10 2-15 sR P Fr Y pS 90 Mg sap, qtz, Ca-carb. Y clasts: both lithic basaltic and glass 51R 1 14 from Piece 14 to Piece 22 51R 2 1 from Piece 1 to Piece 21 57R 1 1 Y contact between altered basalt (or basaltic clast) with brownish and yellow-green alteration halo and breccia zone* 57R* 1 1 Y 50 1-30 A M Y pS 40 Fg sediment?, sap, hydrox. Y 10 silica n 57R* 2 4 Y 60 30 A M Y pS 30 Fg sediment?, sap, hydrox. Y 10 silica one clast