Pre-Cambrian and Triassic diabase in eastern Pennsylvania. Bulletin of the AMNH ; v. 37, article 3.

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Date

1917

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Publisher

New York : Published by order of the Trustees, American Museum of Natural History

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Abstract

Description

p. 173-181, [1] folded leaf of plates : map ; 24 cm.
Includes 1 bibliographical reference (p. 181).
Introduction. Location and general relations -- Topography. Appalachian Mountains. Piedmont Plateau -- Descriptive geology. Geology of the Boyertown Hills. General relations. Graphitic gneiss. Franklin limestone. Granite. Diorite. Gabbro. Palaeozoic rocks. Diabase. Triassic rocks of the Piedmont Plataeu. General relations. Brunswick conglomerate. Brunswick shale. Triassic diabase. Alteration of the shale -- Conclusion.

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