Seafloor character and sedimentary processes in eastern Long Island Sound and western Block Island Sound
| Autor: | Shepard M. Smith, N.A. Forfinski, Lawrence J. Poppe, H.F. Stewart, M. L. DiGiacomo-Cohen |
|---|---|
| Rok vydání: | 2006 |
| Předmět: |
geography
geography.geographical_feature_category Bedform Bedrock Environmental Science (miscellaneous) Geotechnical Engineering and Engineering Geology Oceanography Seafloor spreading Moraine Earth and Planetary Sciences (miscellaneous) Sedimentary rock Glacial period Sediment transport Geology Sound (geography) |
| Zdroj: | Geo-Marine Letters. 26:59-68 |
| ISSN: | 1432-1157 0276-0460 |
| DOI: | 10.1007/s00367-006-0016-4 |
| Popis: | Multibeam bathymetric data and seismic-reflection profiles collected in eastern Long Island Sound and western Block Island Sound reveal previously unrecognized glacial features and modern bedforms. Glacial features include an ice-sculptured bedrock surface, a newly identified recessional moraine, exposed glaciolacustrine sediments, and remnants of stagnant-ice-contact deposits. Modern bedforms include fields of transverse sand waves, barchanoid waves, giant scour depressions, and pockmarks. Bedform asymmetry and scour around obstructions indicate that net sediment transport is westward across the northern part of the study area near Fishers Island, and eastward across the southern part near Great Gull Island. |
| Databáze: | OpenAIRE |
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