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A compositionally zoned ash-flow sheet in southern Nevada /

Lipman, Peter W.

A compositionally zoned ash-flow sheet in southern Nevada / by P. W. Lipman, Robert L. Christiansen and J. T. O'Connor. - Washington: United States Government Printing Office, 1966. - iv, F47 p. : ill., maps, tables ; 29 cm. +1 diagr. - Shorter Contributions to General GeologyChapter F Geological Survey Professional PaperChapter F 524 .

Prepared on behalf of the U. S. Atomic Energy Commission. Conduct diagr.: correlation of measured sections from lathrop wells to paintbrush Canyon, showing lateral variations in depositional units, welding zones, and glass and crystallization zones.

Includes bibliographical references (p. F46-F47).

A widespread ash-flow sheet grades from phenocryst-poor rhyolite upward into phenocryst-rich quartz latite, recording in inverted order the compositional zonation of magma in the source chamber.


Volcanic ash, tuff, etc

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