Table 7. P- wave velocity measurements performed directly on seawater-saturated split core sections from Hole 988A. P- wave "Core, section, " Depth velocity "piece, interval (cm) " (mbsf) (km/ s) Comments 163- 988A-1R- "2 (Piece 5A, 50) " 1.63 5.26 "1R- 2 (Piece 5A, 54) " 1.67 5.33 "2R- 1 (Piece 2, 14) " 12.54 5.99 Irregularly shaped piece "3R- 1 (Piece 10A, 58) " 21. 98 5. 70 "3R- 1 (Piece 10A, 60) " 22. 00 5. 71 "3R- 1 (Piece 10A, 62) " 22. 02 5. 70 "3R- 1 (Piece 10A, 64) " 22. 04 5. 72 "3R- 1 (Piece 10A, 66) " 22. 06 5. 65 Crack "3R- 1 (Piece 10A, 68) " 22. 08 5. 67 "3R- 1 (Piece 10A, 70) " 22. 10 5. 74 "3R- 1 (Piece 10B, 74) " 22.14 5.81 "3R- 1 (Piece 10B, 76) " 22.16 5.77 "3R- 1 (Piece 10B, 78) " 22.18 5.75 "3R- 1 (Piece 10B, 80) " 22.2 5.77 "3R- 1 (Piece 10B, 82) " 22.22 5.73 "3R- 1 (Piece 10B, 84) " 22.24 5.71 "3R- 1 (Piece 10B, 86) " 22.26 5.69 "3R- 1 (Piece 10B, 88) " 22.28 5.72 "3R- 1 (Piece 10B, 90) " 22.3 5.7 "3R- 1 (Piece 10B, 92) " 22.32 5.67 "3R- 1 (Piece 10B, 94) " 22.34 5.65 "3R- 1 (Piece 10B, 96) " 22.36 5.67 "3R- 1 (Piece 10B, 98) " 22.38 5.76 "3R- 1 (Piece 10B, 100) " 22. 40 5. 66 "3R- 1 (Piece 10B, 102) " 22. 42 5. 65 "3R- 1 (Piece 10B, 104) " 22. 44 5. 61 "3R- 1 (Piece 10B, 106) " 22. 46 5. 56 "3R- 1 (Piece 10B, 108) " 22. 48 5. 54 "3R- 1 (Piece 10B, 110) " 22. 50 5. 53 "3R- 2 (Piece 1B, 19) " 22.95 5.62 "3R- 2 (Piece 1B, 21) " 22.97 5.61 "3R- 2 (Piece 1B, 23) " 22.99 5.69 "3R- 2 (Piece 1B, 25) " 23.01 5.71 "3R- 2 (Piece 1B, 27) " 23.03 5.71 "3R- 2 (Piece 1B, 29) " 23.05 5.73 "3R- 2 (Piece 1B, 31) " 23.07 5.77 "3R- 2 (Piece 1C, 39) " 23.15 5.71 "3R- 2 (Piece 1C, 41) " 23.17 5.71 "3R- 2 (Piece 1C, 43) " 23.19 5.73 "3R- 2 (Piece 1C, 45) " 23.21 5.77 "3R- 2 (Piece 1C, 47) " 23.23 5.78 "3R- 2 (Piece 1C, 49) " 23.25 5.82 "3R- 2 (Piece 1C, 51) " 23. 27 5. 81 Large crack visible "3R- 2 (Piece 1C, 53) " 23. 29 5. 79 Large crack visible "3R- 2 (Piece 1C, 55) " 23. 31 5. 79 Large crack visible "3R- 2 (Piece 1C, 57) " 23. 33 5. 78 Large crack visible "3R- 2 (Piece 1D, 61) " 23.37 5.69 "3R- 2 (Piece 1D, 63) " 23.39 5.73 "3R- 2 (Piece 1D, 65) " 23.41 5.74 "3R- 2 (Piece 1D, 67) " 23.43 5.69 "3R- 3 (Piece 1, 2) " 24. 11 5. 58 "3R- 3 (Piece 1, 4) " 24. 13 5. 63 "3R- 3 (Piece 1, 6) " 24. 15 5. 71 "3R- 3 (Piece 1, 8) " 24. 17 5. 69 "3R- 3 (Piece 1, 10) " 24.19 5.72 "3R- 3 (Piece 1, 12) " 24.21 5.7 "3R- 3 (Piece 1, 14) " 24.23 5.68 "3R- 3 (Piece 1, 16) " 24.25 5.68 "3R- 3 (Piece 1, 18) " 24.27 5.71 "3R- 3 (Piece 1, 20) " 24.29 5.74 "3R- 3 (Piece 3B, 77) " 24. 86 5.63 "3R- 3 (Piece 3B, 79) " 24. 88 5.62 "3R- 3 (Piece 3B, 81) " 24. 9 5.69 "3R- 3 (Piece 3B, 83) " 24. 92 5.69 "3R- 3 (Piece 3B, 85) " 24. 94 5.66 "3R- 3 (Piece 3B, 87) " 24. 96 5.61 "3R- 3 (Piece 3B, 89) " 24. 98 5.59 "3R- 3 (Piece 3B, 91) " 25. 00 5.52 "3R- 4 (Piece 2A, 20) " 25. 43 5.65 "3R- 4 (Piece 2A, 22) " 25. 45 5.73 "3R- 4 (Piece 2A, 24) " 25. 47 5.72 "3R- 4 (Piece 2A, 26) " 25. 49 5.74 "3R- 4 (Piece 2A, 28) " 25. 51 5.64 "3R- 4 (Piece 2A, 30) " 25. 53 5.71 "3R- 4 (Piece 2A, 32) " 25. 55 5.75 "3R- 4 (Piece 2A, 34) " 25. 57 5.77 "3R- 4 (Piece 2A, 36) " 25. 59 5.74 "3R- 4 (Piece 2A, 38) " 25. 61 5.71 "3R- 4 (Piece 2A, 40) " 25. 63 5.74 "3R- 4 (Piece 2A, 42) " 25. 65 5.74 "3R- 4 (Piece 2B, 47) " 25. 70 5.56 "3R- 4 (Piece 2B, 49) " 25. 72 5.65 "3R- 4 (Piece 2B, 51) " 25. 74 5.61 "3R- 4 (Piece 2B, 53) " 25. 76 5.71 "3R- 4 (Piece 2B, 55) " 25. 78 5.73 "3R- 4 (Piece 2B, 57) " 25. 8 5.72 "3R- 4 (Piece 2B, 59) " 25. 82 5.76 "3R- 4 (Piece 2B, 61) " 25. 84 5.76 "3R- 4 (Piece 2B, 63) " 25. 86 5.76 "3R- 4 (Piece 6, 95) " 26. 18 5.92 "3R- 4 (Piece 6, 97) " 26. 2 5.97 "3R- 4 (Piece 6, 99) " 26. 22 5.95 "3R- 4 (Piece 6, 101) " 26. 24 5.9 "4R- 1 (Piece 5, 33) " 27. 325 5.84 "4R- 1 (Piece 5, 35) " 27. 345 5.82 "4R- 1 (Piece 5, 37) " 27. 365 5.85 "4R- 1 (Piece 5, 39) " 27. 385 5.8 "4R- 1 (Piece 5, 41) " 27. 405 5.76 "4R- 1 (Piece 5, 43) " 27. 425 5.72 "4R- 1 (Piece 5, 45) " 27. 445 5.63 "4R- 1 (Piece 5, 47) " 27. 465 5.69 "4R- 1 (Piece 12, 105) " 28. 05 5.91 "4R- 1 (Piece 12, 107) " 28. 07 5.85 "4R- 1 (Piece 12, 109) " 28. 09 5.83 "4R- 1 (Piece 12, 111) " 28. 11 5.86 "4R- 1 (Piece 12, 113) " 28. 13 5.87 "5R- 1 (Piece 1, 2) " 28. 47 5.89 "5R- 1 (Piece 1, 4) " 28. 49 5.9 "5R- 1 (Piece 1, 6) " 28. 51 5.9 "5R- 1 (Piece 1, 8) " 28. 53 6.01 "5R- 1 (Piece 1, 10) " 28. 55 6.02 "5R- 1 (Piece 1, 12) " 28. 57 6.02 "5R- 1 (Piece 1, 14) " 28. 59 6.05 "5R- 1 (Piece 1, 16) " 28. 61 6.03 "5R- 1 (Piece 1, 18) " 28. 63 6.01 "5R- 1 (Piece 1, 20) " 28. 65 5.99 "5R- 1 (Piece 1, 22) " 28. 67 6.02 "5R- 1 (Piece 1, 24) " 28. 69 6.04 "5R- 1 (Piece 1, 26) " 28. 71 6.03 "5R- 1 (Piece 1, 28) " 28. 73 6.01 "5R- 1 (Piece 1, 30) " 28. 75 6.06 "Note: Where possible, the sampling interval was 2 cm within a competent basalt piece. "