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Geologic Mapping in Southeastern Pennsylvania

A large mapping effort is ongoing in southeastern Pennsylvania and includes cooperation with several ouside agencies and geologists, and cooperation with the state of Delaware.

Locations of mapping projects in southeastern Pennsylvania. Joe Hill - Oxford and Pa. portion of the Bay View quadrangle. Gale Blackmer - Coatesville, West Grove, and Pa. portions of the Kennett Square, Newark West, and Wilmington North quadrangles. Hal Bosbyshell - Portions of the Bridgeport, Germantown, Malvern, Norristown, Marcus Hook, Philadelphia, and Valley Forge quadrangles and all of the Media, Landsdowne, and West Chester quadrangles. Gil Wiswall - Unionville and the southern portion of the Downington quadrangle. Rodger Faill - Peach Bottom slate and adjacent rocks, Conowingo Dam, Delta, Holtwood, and Wakefield quadrangles. Carol Brown - Honeybrook, New Holland, and portion of Gap quadrangles. Lynn Marquez - Wagontown and Downington quadrangles. Bill Kochanov - Carbonate rock areas of the Ambler, Downingtown, Germantown, Malvern, Norristown, and Valley Forge quadrangles Joe Hill - Airville, Holtwood, and Wakefield (northern) quadrangles. Gale Blackmer - Southern portion of the Conestoga and Quarryville quadrangles. Hal Bosbyshell - Portion of the Gap quadrangle. Gale Blackmer and Carolyn Brown - Parkesburg quadrangle.

Geologists mapping in Southeastern Pennsylvania.

Geologist
Organization
Location
Hal Bosbyshell West Chester University Portions of the Bridgeport, Gap, Germantown, Malvern, Norristown, Marcus Hook, Philadelphia, and Valley Forge quadrangles, and all of the Media, Lansdowne, and West Chester quadrangles
Gale Blackmer Pa. Geological Survey Coatesville, West Grove, Parkesburg (with Carolyn Brown), and Pa. portion of the Newark West and Kennett Square quadrangles; a composite map of a portion of the Wilmington 30- by 60-minute quadrangle of southeastern Pennsylvania; and southern portions of Conestoga and Quarryville quadrangles, and the Pa. portion of the Wilmington North quadrangle
Carolyn Brown Independent Honey Brook, Parkesburg (with Gale Blackmer), New Holland, and a portion of Gap quadrangles
Rodger Faill Pa. Geological Survey Peach Bottom slate and adjacent rocks in southeastern York and southwestern Lancaster Counties, within the Conowingo Dam, Delta, Holtwood, and Wakefield quadrangles
William Kochanov Pa. Geological Survey Carbonate rock areas of the Ambler, Downingtown, Germantown, Malvern, Norristown, and Valley Forge quadrangles
Joe Hill Bloomsburg University Airville, Oxford and Pa. portion of the Bay View quadrangle, and portions of Fawn Grove, Holtwood, and Wakefield quadrangles
Lynn Marquez Millersville University Wagontown and Downington quadrangles
Gil Wiswall West Chester University Unionville and portion of the Downingtown quadrangle

Outcrop of schist in Chester County. Geologist Gale Blackmer, PaGS, mapping metamorphic rocks Chester County.
Gale Blackmer, PaGS staff geologist, gathering data on outcrops of schist in the Parkesburg Quadrangle, Chester County.

See also related research abstracts for southeastern Pennsylvania at our research page.

For more information, contact the Survey at 717–702–2017.

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