Table 1. Sample of the alteration log for Hole 917A.
| Unit | Core | Sec | Piece | Length (cm) | Sub | Depth (mbsf) | Groundmass alteration (%) | Color | Vesicles (%) | Filled | Filling | Phenocryst alteration | Proportion | Secondary minerals | Comments |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
6 |
1 |
1 |
18 |
41.7 |
100 |
RB |
0 |
Ol -> RB |
100 |
C |
Top of lava flow. Volcaniclastic sediments, dark red-brown. |
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6 |
1 |
2 |
6 |
20 |
90 |
P.2-7: Dark red brown - more coherent than P.1. White minerals are zeolites. Vesicles are >90% filled. |
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6 |
1 |
3 |
9 |
20 |
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6 |
1 |
4 |
7 |
50 |
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6 |
1 |
5 |
5 |
15 |
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6 |
1 |
6 |
9 |
15 |
P.6 1% green saponite in vesicles, only trace in other pieces. |
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6 |
1 |
7 |
11 |
10 |
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6 |
1 |
8 |
17 |
6 |
10 |
90 |
W Z |
P.8-10: More igneous texture, brownish gray (purplish). Olivine altered to red-brown clay. White zeolite replaces mesostasis and plagioclase. Vesicles >90% filled. |
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6 |
1 |
11 |
<1 |
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6 |
1 |
9 |
23 |
3 |
15 |
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This is a sample of the table that appears in "ASCII Tables" in the Table of Contents.