Geology And Paleontology Of The Lower Miocene Pollack Farm Fossil Site Delaware
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Date
1998
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Newark, DE: Delaware Geological Survey, University of Delaware
Abstract
The Pollack Farm Site near Cheswold, Delaware, is named for a borrow pit excavated during highway construction. The excavation exposed a portion of the Cheswold sands of the lower Miocene Calvert Formation. Two sand intervals (Cheswold C-3 and C-4) yielded a diverse assemblage of land and marine vertebrate remains and more than 100 species of mollusks. An isolated occurrence of a sandy silt (the radiolarian bed) stratigraphically between the two macrofossil-bearing units yielded only siliceous microfossils—radiolarians, diatoms, and sponge spicules.
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Keywords
Pollack Farm, Cheswold, Delaware, lower Miocene Calvert Formation, mollusks, diatoms, sponge spicules, siliceous microfossils—radiolarians