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The AAPG/Datapages Combined Publications Database

AAPG Special Volumes

Abstract


Pub. Id: A178 (1981)

First Page: 123

Last Page: 143

Book Title: SG 13: Uranium in Volcanic and Volcaniclastic Rocks

Article/Chapter: Cenozoic Sediments, Volcanics, and Related Uranium in the Basin and Range Province of Arizona

Subject Group: Energy Minerals, Etc.

Spec. Pub. Type: Studies in Geology

Pub. Year: 1981

Author(s): Jan C. Wilt, Robert B. Scarborough

Abstract:

Concentrations of uranium in Cenozoic deposits of Arizona occur with carbonaceous and siliceous matter in light-colored, calcareous mudstones or fetid carbonates that were deposited in lacustrine, paludal or low-energy floodplain environments. Although uranium was deposited throughout the Cenozoic, the largest uranium resources in the state occur in the Date Creek basin in fine-grained sediments associated with ignimbrite volcanism of the mid-Tertiary orogeny. This concentration may be related to the coincidence of three factors: low-energy environments where fine grained, carbonaceous, lacustrine or paludal sediments were accumulating; exposure of large areas of alkalic Precambrian granite; and, extrusion of large volumes of relatively alkalic and silicic volcanics of th mid-Tertiary ignimbrites.

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