Reconnaissance Geology of the Crest of the Sierra Estrella, Central Arizona

Spencer, J.E.; Reynolds, S.J.; Anderson, P.; Anderson, J.L.

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Spencer, J.E., Reynolds, S.J., Anderson, P. and Anderson, J.L., 1985, Reconnaissance Geology of the Crest of the Sierra Estrella, Central Arizona. Arizona Geological Survey Open file Report, OFR-85-11, 22 p.

Description

A reconnaissance study of the crest of the northwest-trending Sierra Estrella in central Arizona indicates that this range is composed primarily gneiss and schist with a steeply dipping, northwest-striking foliation similar to that in 1.6-1.7 b.y.-old metamorphic rocks elsewhere in Arizona. Granitic rocks with a concordant foliation form sills and large intrusions into the schist and gneiss, and are thought to be approximately the same age as metamorphism and deformation. Younger, weakly foliated to unfoliated granitic rocks are exposed at the south end of the range, and are probably correlative with the widespread 1.4 b.y. old anorogenic granite suite of North America.

URI

http://hdl.handle.net/10150/629323

Additional Links

https://library.azgs.arizona.edu/

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Series/Report no.

OFR-85-11

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Collection Information

Documents in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact azgs-info@email.arizona.edu.

North Bounding Coordinate

33.2976

South Bounding Coordinate

33.1443

West Bounding Coordinate

-112.349

East Bounding Coordinate

-112.096

Collections

AZGS Document Repository