Priority: 1
Position: 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.
Objectives: 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).
