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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: AT88-13
| SHIP: | R/V Atlantic Twin |
| CRUISE: | AT-88 |
| CORE: | AT88-13 |
| LENGTH: | 514 cm |
| DATE OF CORE: | 9/88 |
| DESCRIBED BY: | N. Neff |
| LOCATION: | Southeast of Narragansett Bay, R.I., Rhode Island Sound |
| LATITUDE: | 41o 17.9' N |
| LONGITUDE: | 71o 15.0' W |
| LORAN: | 14394.8, 43911.5 |
| WATER DEPTH (m): | 37 |
| DATE SPLIT: | 3/89 |
| 0 - 35 cm - | Light brownish gray, 2.5Y 6/2, loose, fine to coarse sand. Few shell fragments and few 1 - 3 cm clasts. Unit disturbed in splitting. Gradational lower contact. |
| 35 - 303 cm - | Grayish brown, 2.5Y 5/2, firm, fine to coarse sand. 60 and 75 cm: horizontal, dark grayish brown laminae of organic material less than 1 cm thick. 100 - 165 cm irregular, inclined, continuous to discontinuous gray silty layers. 150 - 303 cm: few scattered gravel clasts, 0.5 - 1.0 cm in size. Sharp horizontal lower contact. |
| 303 - 514 cm - | Dark gray, 5Y 4/1, firm silt and clay, some mottling due to organic matter. |