U.S. Geological Survey Open-File Report 2009-1001
Geological Interpretation of the Sea Floor Offshore of Edgartown, Massachusetts
E21 / Undulating sandy bottom with burrows and scattered shell debris (primarily razor clam). Whelk and crabs are present; scour present around obstructions. | |||
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E22 / Muddy sand with abundant shells (primarily Crepidula) and short reddish seaweed. Whelk and small fish are present. | |||
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E23 / Undulating sand with abundant burrows. Scattered seaweed; whelk and a trace of shell debris are present. | |||
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E24 / Sand with abundant shells and shell debris (Crepidula and scallop) and short red seaweed. Whelk are present. | |||
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E25 / Sand with abundant shells and shell debris (primarily Crepidula and scallop). Green alga and short seaweed are common; whelk are present. | |||
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E26 / Flat to undulating muddy sediment covered by a patchy organic mat. Scattered small burrows and small to larger burrows, shell debris, crabs and crab tracks, and whelk are present. | |||
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E27 / Flat to undulating muddy sand. Patches of low seaweed and shell debris are present. | |||
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E28 / Muddy sand with abundant shells (primarily Crepidula) and shell debris. Short red seaweed and whelk are common. | |||
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E29 / Gravel and gravelly sediment with some sandy and bouldery patches. Seaweed is common; whelk egg casings are present. Bottom has a current-swept appearance. | |||
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E30 / Gravelly sediment with gravel patches. Bottom becomes sandier along drift track. Abundant seaweed; small fish are present. | |||
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E31 / Faintly rippled sand with scattered burrows and shell debris (primarily quahog and razor clam). Spider and hermit crabs and whelk are present. | |||
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E32 / Sand with abundant shells and shell debris. Seaweed, crabs, whelk and whelk egg casings are present. | |||
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E33 / Rippled sand with abundant shells and shell debris (primarily razor) and scattered burrows. Spider crabs are common; small fish, whelk, whelk egg casings, and scour depressions around obstructions are present. | |||
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E34 / Rippled sand with seaweed-rafting clasts and drag marks and shells and shell debris. Burrows, whelk and whelk egg casings, and scour depressions around obstructions are present. | |||
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E35 / Rippled sand with seaweed-rafting clasts and drag marks and scattered burrows. Small fish and scour depressions around obstructions are present. | |||
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E36 / Gravel and patches of rippled sand with patches of eelgrass and other seaweed. Small fish are present. | |||
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E37 / Rippled sand with scattered gravelly patches and a few seaweed-covered boulders. Small fish, burrows, and horseshoe crabs are present. | |||
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