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V.—Some Recent American Petrological Literature

Published online by Cambridge University Press:  01 May 2009

Extract

“The Igneous Geology of Carrizo Mountain, Arizona,” by W. B. Emery. Amer. Journ. Sci., vol. xlii, pp. 349–63, 1916.

This region includes various intrusive bodies: sheets, sills, dykes, and a large laccolith of diorite-porphyry. The presence of six volcanic plugs also indicates extrusion, though all flows have been removed by erosion.

Type
Original Articles
Copyright
Copyright © Cambridge University Press 1919

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