Earth and Planetary Sciences ETDs

Publication Date

12-1969

Abstract

The northern part of the Mogollon-Datil province is located on the margin of the mid-Tertiary volcanic province of southwest New Mexico. The techinique established b Smith (1967) for determining flow direction of volcanic rocks was applied, for the first time, to determine flow direction and source areas of volcanic rocks form uncertain centers.

The Lower volcanic Group, which contains thick sequences of rhyolltes, latites, and andesites between 38 and 29 m.y. old, originated from two volcanic centers. Source area for the Datil formation, comosed of the Spears and Hells Mesa Members, is in the northern San Mateo Mountains. The Tda of Weber and Willard (1959) originated form a volcanic center probably located southwest of Glenwood.

The middle Volcanic Group, composed of thick sequences of rhyolite and quartz latite ash-flow tuffs younger than 28 m.y., originated from the Bursum and Gila Cliff Dwellings cauldrons. These cauldrons, located on the western interior rim of the Mogollon Plateau, are 12-15 miles in diameter, and were previously indicated by field mapping by Elston et al. (1968b). The computed results confirm the field observations.

Degree Name

Earth and Planetary Sciences

Level of Degree

Masters

Department Name

Department of Earth and Planetary Sciences

First Committee Member (Chair)

Wolfgang E. Elston

Second Committee Member

Illegible

Third Committee Member

Albert M. Kudo

Fourth Committee Member

Klaus Keil

Language

English

Document Type

Thesis

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