Site: APSHE-13A

Priority: 1
64°51.72'S, 64°12.51'W
Water Depth:
1040 m
Sediment Thickness:
~60 m
Approved Maximum Penetration:
70 mbsf
Seismic Coverage:
On site (located on Core 30) at SP 519 of Line AI97-H218G; 375 m off the site, SP 490 of Line AI97-H218G intersects SP 629 of Line AI97-H223G (GI gun source); 400 m off the site SP 490 of Line AI97-H218G intersects SP 930 of Line AI97-H230 (water gun source). Site also located on PD92-2 Huntec D-TB (deep-tow boomer) 540J survey line.

The objectives of Site APSHE-13A are to:

1. Obtain a Holocene ultra-high-resolution record of paleoproductivity in an inner shelf basin.

2. Examine decadal-millennial variability to compare with low-latitude and ice core records.

Drilling Program: Quadruple APC to 50 m or base of biogenic sediments, if deeper. Alternate site is APSHE-15A.

Logging and Downhole Operations: None

Nature of Rock Anticipated:
Pelagic/hemipelagic siliceous ooze and mud, with <1% ice-rafted component (??diamicton at base).

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