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Published online by Cambridge University Press: 01 May 2009
“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.