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Filtering by: Subject Geology -- Arizona -- Ash Peak Region

Magmatism and mineralization of the Ash Peak area, Arizona : petrochemical interpretations

Creator:

Walker, Robert J.

Abstract:

Andesitic and rhyolitic magmatism was active during the mid- Tertiary (Early Miocene) of the Ash Peak area, southeastern Arizona. Andesitic magmas of similar composition both preceded and followed the low- and high-silica rhyolitic magmas. The changes from andesitic to rhyolitic and back to andesitic volcanism is postulated to be the...

Resource Type:

Dissertation