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Geologic map of Clayton quadrangle, topographic map. Areal Geology. Clayton Quadrangle. Delaware, New Castle and Kent County. Miocene, Pleistocene (Columbia group), Late Pleistocene and Recent, Tertiary, Quarternary.
Geologic map of Milton quadrangle, topographic map. Areal Geology. Milton Quadrangle. Delaware, Sussex County. Pleistocene, Late Pleistocene and Recent, Quaternary.
The Structural and Metamorphic History of the Wissahickon Formation in the Philadelphia Area
The Structural and Metamorphic History of the Wissahickon Formation in the Philadelphia Area
The Structural and Metamorphic History of the Wissahickon Formation in the Philadelphia Area
The Structural and Metamorphic History of the Wissahickon Formation in the Philadelphia Area
Aerial photograph southwest of Blackbird, Delaware, showing the Borthwick area
Aerial photograph southwest of Blackbird, Delaware, showing the Borthwick area
The Structural and Metamorphic History of the Wissahickon Formation in the Philadelphia Area. Map of the Fairmount Structures.
The Structural and Metamorphic History of the Wissahickon Formation in the Philadelphia Area. Map of the Schuylkill structures.
The Structural and Metamorphic History of the Wissahickon Formation in the Philadelphia Area. Map of the compositional layering and Fairmount schistosity.
The Structural and Metamorphic History of the Wissahickon Formation in the Philadelphia Area. Map of the Wissahickon Creek structures.
A Field Study in the Relationship of Baltimore Gneiss, Cockeysville Marble and Wissahickon Schist in the Vicinity of Marshallton, Pennsylvania
A Study of Fluid Inclusions in Quartz Veins Associated with the Octararo Phyllite in Southeastern Pennsylvania
A Study of Fluid Inclusions in Quartz Veins Associated with the Octararo Phyllite in Southeastern Pennsylvania
Igneous and Metamorphic Petrology of the Honey Brook Uplands in the Elverson, Pottstown and Phoenixville 7.5 Quadrangles, Southeastern Pennsylvania
Life and Death Assemblages of Zone 10 of the Calvert Formation Calvert County, Maryland
A Field Study in the Relationship of Baltimore Gneiss, Cockeysville Marble and Wissahickon Schist in the Vicinity of Marshallton, Pennsylvania
A Field Study in the Relationship of Baltimore Gneiss, Cockeysville Marble and Wissahickon Schist in the Vicinity of Marshallton, Pennsylvania
A Field Study in the Relationship of Baltimore Gneiss, Cockeysville Marble and Wissahickon Schist in the Vicinity of Marshallton, Pennsylvania

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