Illinoian Outwash in Southeastern Pennsylvania
Illinoian Outwash, B Bulletin, Thomas Nolan
Abstract
Illinoian Outwash, B Bulletin, Thomas Nolan
Abstract
The most complete exposed section of Pleistocene sediments in the costal plain of Pennsylvania is in the Turkey Hill gravel pit in southeastern Bucks County. The section consists of highly weathered sand and gravel outwash, containing a red zone in its upper part, and is believed to be of Illinoian age. A lag gravel capping the outwash and containing ventifacts records periglacial conditions. Loess overlies the lag gravel. Relatively unweathered Wisconsin outwash overlies the Illinoian outwash on the flanks of Turkey Hill.
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The most complete exposed section of Pleistocene sediments in the costal plain of Pennsylvania is in the Turkey Hill gravel pit in southeastern Bucks County. The section consists of highly weathered sand and gravel outwash, containing a red zone in its upper part, and is believed to be of Illinoian age. A lag gravel capping the outwash and containing ventifacts records periglacial conditions. Loess overlies the lag gravel. Relatively unweathered Wisconsin outwash overlies the Illinoian outwash on the flanks of Turkey Hill.
Key concepts: Outwash plain, Geology, Loess, Geomorphology, Pleistocene, Section (typography), Geochemistry, Paleontology