Table T8. Distribution of olivine coronae in thin section, Hole U1415J.
|
Core, section, interval (cm) |
Thin section number | Depth (mbsf) | Lithology |
Corona (%) |
Total olivine alteration (%) |
|
|---|---|---|---|---|---|---|
| Top | Bottom | |||||
| 345-U1415J- | ||||||
| 3R-1W, 11–13 (Piece 4) | 29 | 15.11 | 15.13 | Olivine gabbro | 15 | 90 |
| 3R-1W, 22–24 (Piece 6) | 30 | 15.22 | 15.24 | Olivine gabbro | 2 | 100 |
| 3R-1W, 45–48 (Piece 10) | 31 | 15.45 | 15.48 | Gabbro | 15 | 50 |
| 3R-1W, 73–75 (Piece 14) | 32 | 15.73 | 15.75 | Olivine gabbro | 10 | 80 |
| 5R-1W, 62–64 (Piece 12) | 36 | 26.82 | 26.84 |
Clinopyroxene oikocryst-bearing olivine gabbro |
8 | 40 |
| 5R-1W, 117–120 (Piece 17B) | 37 | 27.37 | 27.4 |
Clinopyroxene oikocryst-bearing olivine gabbro |
0 | 50 |
| 5R-1W, 138–141 (Piece 18) | 38 | 27.58 | 27.61 | Olivine gabbro | 0 | 20 |
| 5R-2W, 60–63 (Piece 3) | 39 | 28.235 | 28.265 | Olivine-bearing gabbronorite | 0 | 15 |
| 7G-1W, 28–31 (Piece 5) | 40 | 29.28 | 29.31 |
Clinopyroxene oikocryst-bearing troctolite |
20 | 40 |
| 7G-1W, 35–38 (Piece 6) | 41 | 29.35 | 29.38 | 10 | 70 | |
| 7G-1W, 55–56 (Piece 8) | 45 | 29.55 | 29.56 |
Clinopyroxene oikocryst-bearing olivine gabbro |
0 | 25 |
| 7G-1W, 84–87 (Piece 13) | 43 | 29.84 | 29.87 | Oikocryst-bearing gabbro | 10 | 100 |
| 7G-1W, 91–94 (Piece 14) | 42 | 29.91 | 29.94 | Oikocryst-bearing gabbro | 30 | 90 |
| 8R-1W, 34–37 (Piece 7) | 46 | 35.24 | 35.27 | Clinopyroxene oikocryst troctolite | 10 | 100 |
| 8R-1W, 73–76 (Piece 13) | 47 | 35.63 | 35.66 | Oikocryst gabbro | 0 | 70 |
| 8R-1W, 79–82 (Piece 13) | 49 | 35.69 | 35.72 | Oikocryst gabbro | 0 | 40 |
| 8R-2W, 71–74 (Piece 7C) | 50 | 37.08 | 37.11 | Clinopyroxene oikocryst troctolite | 0 | 100 |
| 8R-2W, 79–82 (Piece 8) | 51 | 37.16 | 37.19 | Clinopyroxene oikocryst troctolite | 0 | 25 |
| 8R-2W, 112–115 (Piece 9) | 52 | 37.49 | 37.52 | Clinopyroxene oikocryst troctolite | 0 | 30 |
| 8R-3W, 26–29 (Piece 5) | 53 | 38.12 | 38.15 | Clinopyroxene oikocryst troctolite | 0 | 25 |
| 8R-3W, 35–38 (Piece 6) | 54 | 38.21 | 38.24 | Olivine gabbro | 10 | 95 |
| 8R-3W, 83–86 (Piece 9B) | 55 | 38.69 | 38.72 | Olivine gabbro | 0 | 25 |
| 8R-3W, 129–132 (Piece 14A) | 57 | 39.15 | 39.18 | Olivine gabbro | 15 | 100 |
| 9R-1W, 46–49 (Piece 7) | 48 | 45.66 | 45.69 | Olivine-bearing gabbro | 10 | 100 |
| 10R-1W, 53–55 (Piece 6B) | 58 | 55.83 | 55.85 | Troctolite | 0 | 25 |
| 11R-1W, 22–24 (Piece 4) | 59 | 65.22 | 65.24 | Troctolite | 0 | 25 |
| 12R-1W, 86–89 (Piece 12) | 62 | 70.56 | 70.59 | Olivine gabbro | 0 | 100 |
| 12R-1W, 94–96 (Piece 13) | 63 | 70.64 | 70.66 | Olivine gabbro | 5 | 100 |
| 12R-1W, 115–117 (Piece 15) | 64 | 70.85 | 70.87 | Olivine gabbro | 40 | 100 |
| 13R-1W, 26–29 (Piece 4B) | 65 | 74.96 | 74.99 | Troctolite | 30 | 100 |
| 13R-1W, 39–41 (Piece 6) | 66 | 75.09 | 75.11 | Troctolite | 5 | 40 |
| 13R-1W, 53–56 (Piece 7) | 67 | 75.23 | 75.26 | Troctolite | 10 | 100 |
| 15G-1W, 46–49 (Piece 6) | 69 | 80.32 | 80.35 | Troctolite | 0 | 50 |
| 18R-1W, 49–52 (Piece 7) | 70 | 84.89 | 84.92 | Troctolite | 60 | 100 |
| 18R-1W, 67–69 (Piece 9) | 71 | 85.07 | 85.09 | Chromitite | 100 | 100 |
| 18R-1W, 141–143 (Piece 17B) | 72 | 85.81 | 85.83 | Troctolite | 2 | 85 |
| 19R-1W, 18–19 (Piece 3) | 73 | 89.28 | 89.29 | Troctolite | 2 | 60 |
| 19R-1W, 64–67 (Piece 10) | 74 | 89.74 | 89.77 | Cataclasite | 5 | 100 |
| 21R-1W, 13–15 (Piece 3) | 76 | 98.93 | 98.95 | Chromitite | 100 | 100 |
| 21R-1W, 58–59 (Piece 9) | 78 | 99.38 | 99.39 | Olivine gabbro | 10 | 100 |
| 21R-1W, 103–107 (Piece 14) | 79 | 99.83 | 99.87 | Olivine gabbro | 25 | 100 |
| 21R-1W, 118–121 (Piece 16) | 80 | 99.98 | 100.01 | Olivine gabbro | 5 | 100 |
| 23R-1W, 39–42 (Piece 7) | 82 | 102.19 | 102.22 | Olivine gabbro | 40 | 100 |
| 23R-1W, 52–53 (Piece 8) | 83 | 102.32 | 102.33 | Olivine gabbro | 0 | 100 |
| 25G-1W, 11–15 (Piece 2) | 84 | 103.91 | 103.95 | Oikocryst gabbro | 5 | 100 |
| 25G-1W, 32–35 (Piece 5) | 85 | 104.12 | 104.15 | Clinopyroxene oikocryst gabbro | 20 | 40 |
Previous | Close | Next | Top of page