. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography Surficial sediments 99. Fig. 11. Northern proposed interim alternative dumping area (2D1 on Fig. 1). Grain-size distri- bution of sand-sized fraction. Large dots—sample stations. (Bathymetry from Steams and Garrison 1967; 1-fm contour intervals.) ing ridge and swale topography. Geophysi- cal data, sediment samples, and two dives in submersibles showed that grain-size pat- terns appear to be related to bottom topog- raphy; coarser sand and gravel dep
. Collected reprints / Atlantic Oceanographic and Meteorological Laboratories [and] Pacific Oceanographic Laboratories. Oceanography Surficial sediments 99. Fig. 11. Northern proposed interim alternative dumping area (2D1 on Fig. 1). Grain-size distri- bution of sand-sized fraction. Large dots—sample stations. (Bathymetry from Steams and Garrison 1967; 1-fm contour intervals.) ing ridge and swale topography. Geophysi- cal data, sediment samples, and two dives in submersibles showed that grain-size pat- terns appear to be related to bottom topog- raphy; coarser sand and gravel deposits lie on the crest and east flank of the Hudson divide, while medium- and fine-grained sand occur in the ridge and swale topog- raphy (Fig. 13). These distributions sug- gest that fine sediment is winnowed from the crest and east flank of the divide and deposited to the west. Observations from a submersible in Veatch and Smith Trough reveal a veneer of shelly, pebbly sand with large, angular clay pebbles and occasional oyster shells derived from the underlying early Holocene lagoonal clay. Seismic data also reveal that the reflector associated with this surface, outcrops on the ridge flank. It appears that storm-generated currents from the northeast have winnowed the east flank of the Hudson divide and formed or main- tained the ridge and swale topography on the west side of the divide. the northeast the bottom grades gently into the Hudson Shelf Valley, while the western section is characterized by northeast-trend-. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Atlantic Oceanographic and Meteorological Laboratories; Pacific Oceanographic Laboratories; United States. Environmental Science Services Administration. Research Laboratories; Environmental Research Laboratories (U. S. ). Washington, D. C. :
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