USGS OFR 2002-2: Geological Framework Data from Long Island Sound, 1981-1990: A Digital Data Release

SHIP:	R/V Atlantic Twin
CRUISE:	AT-84
CORE:	LISAT-2
LENGTH RECOVERED:	276 cm
PENETRATION:	29'
NUMBER OF SECTIONS:	4
LOCATION:	Stratford Shoal, western Long Island Sound
LATITUDE:	41^o 02.75' N
LONGITUDE:	73^o 09.3' W
LORAN:	26670.5, 43972.4
COMMENTS:	Seismic line for this core is Line AT#1 (sparker). This lines runs from 1010-1014 hrs. Core is into confused layer (site III-4 on line 19, UCONN84-1). Section 1 cut, H2S and shells; section 2A shells; section 4 void at the top-NOT cut.
PENTROMETER RECORD:	Rapid 0-9'; moderate 10,11,12'; slow 12-18'; moderate 19-20'; slow 20'-end
0-156 cm (Section 1) -	Olive gray , 5Y 4/2, silty sand and sandy silt; varying percentages of sand. Shell hash in top 23 cm. 110-126 cm: lots of large shell fragments; gradational contact to silty sand at 130 cm. Large oyster shell and other shells at 152 cm.
156-241 cm (Section 2A) -	dark grayish brown, 2.5Y 4/2, fine sand and silt, with mottling of dark olive gray, 5Y 3/2 clayey silt and fine sand; gradational contact with next lower unit; scattered large shells. 202-222: dark grayish brown, 2.5Y 4/2, with mottling of 5Y 5/3 fine -medium sand. 222-241 cm: dark grayish brown 2.5Y 4/2 fine sand.
241-326 cm (Section 2B) -	grayish brown, 2.5Y 5/2, fine sand; sharp contact; no shells; gravel at contact. 252-271 cm: light brownish gray, 2.5Y 6/2, well sorted, cleaner sand - fine sand; 5% medium sand. 271-295 cm: 5 or 6 cycles of layering, coarse (fine sand) grading upward to fine (silty clay), color changes. 295-320 cm: 1-2 cm layering by color only of sand; general color light brownish gray, 2.5Y 6/2, fine-medium sand. 320-326 cm: dark grayish brown, 2.5Y 4/2, fine sand.
326-410 cm (Section 3A) -	dark olive gray, 2.5Y 3/2, fine sand, very micaceous. 331-335 cm: black, 5Y 2.5/2, fine sand, very micaceous, organic fabric, no odor. 335-343 cm: dark grayish brown, 2.5Y 4/2, fine sand, less mica, sharp contact. 343-410 cm: dark gray, 5Y 4/1, to very dark gray, 2.5Y 3/2, silt and silty clay (77% silt, 22% clay at 360-366 cm), presumably lake clay, totally disturbed and distorted, no couplets recognizable, "flow in", however colors are distinguishable.
410-494 cm (Section 3B) -	dark gray, 5Y 4/1, to very dark gray, 2.5Y 3/2, silt and silty clay, presumably lake clay, totally disturbed and distorted, no couplets recognizable, "flow in", however colors are distinguishable.
494-643 cm (Section 4) -	dark gray, 5Y 4/1, to very dark gray, 2.5Y 3/2, silt and silty clay, presumably lake clay, totally disturbed and distorted, no couplets recognizable, "flow in", however colors are distinguishable.

Prepared in cooperation with with the Connecticut Department of Environmental Protection