|
Priority:
|
Secondary
|
|
Position:
|
47°54.105′N, 128°33.468′W; approved for 500 m radius surrounding position
|
|
Water depth (m):
|
2600
|
|
Target drilling depth (mbsf):
|
110
|
|
Approved maximum penetration (mbsf):
|
110
|
|
Survey coverage:
|
InLine 44, TR426 (Track Map and Seismic Profile Fig. F7) |
|
Objective:
|
Core a short series of sediment and shallow basement holes along the first buried basement ridge east of the spreading center to evaluate sediment properties, document fluid chemistry and evidence for along-strike fluid flow, and determine the nature of hydrothermal alteration and microbiology in uppermost basement. Sediment thickness is 40–60 m where basement comes closest to the seafloor. |
|
Drilling and Logging program:
|
• APC/XCB and RCB core through sediments and into uppermost basement
• Core into upper basement
• Collect temperature measurements (SET, APCT3)
See "Operations plan/drilling strategy" and Table T3 |
|
Nature of rock anticipated:
|
Turbidites (sand, silt, clay) and hemipelagic mud, overlying basalt
|
