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Regolith in the Piedmont Upland Section, Piedmont Province, York, Lancaster, and Chester Counties, southeastern Pennsylvania

Southeastern Geology
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Abstract

Regolith has been mapped in the Piedmont Upland Section of the Piedmont Province in York, Lancaster, and Chester Counties, southeastern Pennsylvania. The Piedmont Upland Section is an area of rounded hills and flat-floored valleys developed by weathering and erosion of schist, gneiss, metaquartzite, and other metamorphic rocks. In situ regolith includes weathered rock and saprolite. Transported regolith includes alluvium, colluvium, fluvial terrace deposits, and anthropogenic deposits. Weathered rock occurs almost everywhere except where erosion has exposed unweathered bedrock in valley bottoms. Thin colluvium occurs discontinuously on hill tops and side slopes while thicker colluvium occurs in heads of first-order drainage basins and in small valleys lacking perennial streams. Alluvium is present in all valleys with perennial streams. This regolith is the product of early to middle Cenozoic weathering, middle to late Cenozoic erosion, Pleistocene periglacial erosion and deposition, and recent anthropogenic activity.

Suggested Citation

Sevon, W., 2000, Regolith in the Piedmont Upland Section, Piedmont Province, York, Lancaster, and Chester Counties, southeastern Pennsylvania: Southeastern Geology, v. 39, no. 3-4, p. 223-241.

Publication type Article
Publication Subtype Journal Article
Title Regolith in the Piedmont Upland Section, Piedmont Province, York, Lancaster, and Chester Counties, southeastern Pennsylvania
Series title Southeastern Geology
Volume 39
Issue 3-4
Year Published 2000
Language English
Larger Work Type Article
Larger Work Subtype Journal Article
Larger Work Title Southeastern Geology
First page 223
Last page 241
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