Table T3. Hole U1301B igneous unit and contacts log.
| Unit | Subunit | Upper contact |
Depth interval (mbsf) |
Minimum thickness (m) |
Lithology | |||
|---|---|---|---|---|---|---|---|---|
| Core | Section | Piece | Type | |||||
| 1 | A | 1R | 1 | 1 | NR | 351.20–351.77 | 0.50 | Basalt-hyaloclastite breccia |
|
|
B | 1R | 1 | 8 | NR | 351.77–352.54 | 0.52 | Sparsely clinopyroxene-plagioclase phyric basalt |
|
|
C | 1R | 1 | 17 | C | 352.54–425.01 | 20.26 | Sparsely to moderately clinopyroxene-plagioclase phyric pillow basalt |
| 2 | A | 11R | 1 | 12 | C | 425.01–431.53 | 3.91 | Sparsely to moderately olivine-clinopyroxene-plagioclase phyric massive basalt |
|
|
B | 13R | 2 | 3 | C | 431.53–435.29 | 1.26 | Sparsely to moderately olivine-clinopyroxene-plagioclase phyric basalt massive flow |
| 3 |
|
14R | 1 | 16 | C | 435.29–444.09 | 0.90 | Moderately olivine-clinopyroxene-plagioclase phyric pillow basalt |
| 4 | A | 15R | 1 | 7 | C | 444.09–444.66 | 0.40 | Sparsely to moderately clinopyroxene-plagioclase phyric basalt massive flow |
|
|
B | 15R | 1 | 12 | NR | 444.66–448.10 | 2.94 | Sparsely to moderately clinopyroxene-plagioclase phyric basalt massive flow |
|
|
C | 15R | 4 | 1 | C | 448.10–449.73 | 1.47 | Sparsely to moderately clinopyroxene-plagioclase phyric basalt massive flow |
| 5 |
|
15R | 5 | 3 | C | 449.73–471 | 2.09 | Moderately olivine-clinopyroxene-plagioclase phyric pillow basalt |
| 6 |
|
18R | 1 | 1 | C | 471–475.77 | 4.39 | Sparsely plagioclase phyric massive basalt |
| 7 | A | 18R | 4 | 4 | C | 475.77–491.78 | 4.72 | Sparsely to moderately olivine-plagioclase phyric pillow basalt |
|
|
B | 21R | 2 | 5 | C | 491.78–511.78 | 11.00 | Moderately to highly clinopyroxene-olivine-plagioclase phyric pillow basalt |
|
|
C | 25R | 2 | 7 | NR | 511.41–564.41 | 14.25 | Aphyric and sparsely to moderately clinopyroxene-olivine-plagioclase phyric pillow basalt |
| 8 | A | 35R | 1 | 10 | C | 564.41–565.6 | 1.06 | Basalt-hyaloclastite breccia |
|
|
B | 35R | 2 | 8 | C | 565.6–573.20 | 1.24 | Sparsely to moderately clinopyroxene-olivine-plagioclase phyric basalt |
|
|
C | 36R | 1 | 15 | C | 573.20–582.8 | 2.91 | Moderately to highly clinopyroxene-olivine-plagioclase phyric pillow basalt |
Notes: NR = not recovered, C = chilled margin.
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