State Library of Pennsylvania - County Histories

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  • Subject = Geology, Stratigraphic -- Silurian ; Geology, Stratigraphic -- Silurian -- Maps ; Geology -- Pennsylvania ; Geology -- Pennsylvania -- Maps

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A collection of Pennsylvania county, township and borough histories. Includes atlases and plat maps of the state, county, townships, cities, and boroughs.
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Stratigraphic studies of the Silurian rocks of Pennsylvania : part 1. stratigraphic cross sections of lower Devonian and Silu
Stratigraphic studies of the Silurian rocks of Pennsylvania : part 1. stratigraphic cross sections of lower Devonian and Silu
Geology, Stratigraphic -- Silurian ; Geology, Stratigraphic -- Silurian -- Maps ; Geology -- Pennsylvania ; Geology -- Pennsylvania -- Maps
Lower Devonian and Silurian rocks found in wells in the Plateau Province of Western Pennsylvania and adjacent areas are depicted in a series of six cross sections. The emphasis is on stratigraphic correlation of formational and group units found in the subsurface. Two volumes: Pt. 1. Stratigraphic cross sections of lower Devonian and Silurian rocks in western Pennsylvania and adjacent areas. Pt. 2. Subsurface maps of the Silurian rocks of Western Pennsylvania and adjacent areas.