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U.S. Geological Survey Open-File Report 02-002
Geological Framework Data from Long Island Sound, 1981-1990:
A Digital Data Release
Visual Core Description: AT88-6
| SHIP: | R/V Atlantic Twin |
| CRUISE: | AT-88 |
| CORE: | AT88-6 |
| LENGTH: | 618 cm |
| DATE OF CORE: | 9/88 |
| DESCRIBED BY: | N. Neff |
| LOCATION: | South of Niantic Bay, Long Island Sound |
| LATITUDE: | 41o 16.2' N |
| LONGITUDE: | 72o 12.2' W |
| LORAN: | 26205.1, 43987.9 |
| WATER DEPTH (m): | 51 |
| DATE SPLIT: | 3/89 |
| 0 - 430 cm - | Dark gray, 5Y 4/1, firm, sandy (very fine) silt, with organic material 0 - 30 cm: numerous olive to brownish gray sand patches and some shell fragments 103 cm: round sand patch. 110 cm: 5 cm diameter, round wood fragment. 162 cm: sand patch. 90 - 290 cm: horizontal couplets of alternating very fine sand and silt; each layer approx. 0.5 cm thick. Layers of organic material/wood/plant fragments at 125 - 140 cm, 150 cm, 243 cm, and 287 cm. Gradational lower contact (color change only). |
| 430 - 618 cm - | Weak red, 2.5 YR 4/2, firm, sandy (very fine) silt with organic material and occasional pebbles. Grain size increases down - section to coarse sand, few pebbles and lesser amounts of silt. 550 - 618 cm: sand occurs in layers, 2 - 5 cm thick, dusky red to gray - red in color. |