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Open-File Report 2002-002

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Prepared in cooperation with with the Connecticut Department of Environmental Protection

U.S. Geological Survey Open-File Report 02-002

Geological Framework Data from Long Island Sound, 1981-1990:

A Digital Data Release

CERC Technical Report 81-3

Table 2.

 

General stratigraphy of Connecticut
ERA PERIOD EPOCH CHARACTER AND ORIGIN OF DEPOSITS
Cenozoic Quaternary Holocene Estuarine and marine soft organic muds from fluvial and shelf sources; modern marsh peat along coast
 

 

Pleistocene Localized and discontinuous ground till, moraine segments, and stratified sand and gravel outwash deposits
Mesozoic Triassics   A basin of sandstone, siltstone, conglomerates, and basaltic dikes intersect the shore at New Haven, Conn.; may continue under Long Island sound toward the Long Island Sound Mainland
Paleozoic and Precambrian     Metamorphic and igneous crystalline basement rock

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