U.S. Geological Survey Open-File Report 2011–1149
Sea-Floor Geology of Long Island Sound North of Duck Pond Point, New York
Title |
List of Figures |
Conversion Factors |
Abstract |
Introduction |
Setting |
Methods |
Bathymetry |
Sediments |
Bottom Photography |
GIS Data Catalog |
Summary |
Acknowledgments |
References |
Contacts
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Figure 3. Seismic-reflection profile from line 38 of U.S. Geological Survey cruise 82-3 aboard the Woods Hole Oceanographic Institute research vessel Asterias, with interpretation (Lewis and Needell, 1987). The line crosses the eastern part of the study area and shows sand waves and a scour depression on the sea floor. The scour depression has eroded into underlying post-glacial marine sediments, which are probably mostly deltaic. This unit is underlain by a marine unconformity and glaciolacustrine sediments. In the southwestern part of the line segment, undifferentiated glacial drift (probably the flank of the Harbor Hill-Roanoke Point-Orient Point moraine segment) crops out. Location of seismic profile shown in figure 16. |