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Priority: |
Alternate 2 |
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Position: |
Along seismic Line Meg-4, endpoints of potential transect at 30.15°N, 42.12°W to 30.24°N, 42.11°W (See Fig. F8) |
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Water depth (m): |
1600–2200 |
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Sediment thickness (m): |
1–2 |
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Target drilling depth (mbsf): |
Single bit penetration |
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Approved maximum penetration (mbsf): |
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Survey coverage: |
Specific sites to be determined by time available and subsea camera survey between common midpoints 3900 and 5400 |
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Objectives: |
Transect of ridge-parallel sites along the central dome to investigate heterogeneity in microstructure, geochemistry, and petrology along the dome moving from the ridge segment end toward its center |
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Drilling program: |
Single bit to destruction or until objectives reached |
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Logging program: |
Contingent upon depth of penetration and hole conditions |
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Nature of rock anticipated: |
Serpentinized peridotite, gabbro |