CaltechAUTHORS
  A Caltech Library Service

Late Triassic paleogeography of the southern Cordillera: The problem of a source for voluminous volcanic detritus in the Chinle Formation of the Colorado Plateau region

Stewart, John H. and Anderson, Thomas H. and Haxel, Gordon B. and Silver, Leon T. and Wright, James E. (1986) Late Triassic paleogeography of the southern Cordillera: The problem of a source for voluminous volcanic detritus in the Chinle Formation of the Colorado Plateau region. Geology, 14 (7). pp. 567-570. ISSN 0091-7613. http://resolver.caltech.edu/CaltechAUTHORS:20130508-152950143

Full text is not posted in this repository. Consult Related URLs below.

Use this Persistent URL to link to this item: http://resolver.caltech.edu/CaltechAUTHORS:20130508-152950143

Abstract

The Upper Triassic Chinle Formation of the Colorado Plateau contains voluminous volcanic detritus evidently derived from a source to the south. Volcanic rocks exposed in southern Arizona and northern Sonora have been assumed to represent this source terrane, but U-Pb isotopic geochronology and regional stratigraphic correlations indicate that these volcanic rocks are distinctly younger than the Chinle, and thus not a source for the volcanic detritus in the Chinle. Igneous rocks of known or possible Late Triassic age in Nevada, California, or northeastern Mexico are possible sources, but a clearly defined source terrane for the volcanic detritus in the Chinle has not been identified. Tectonic removal of the source terrane by rifting or strike-slip offset, though not proven, is a possibility.


Item Type:Article
Related URLs:
URLURL TypeDescription
http://dx.doi.org/10.1130/0091-7613(1986)14<567:LTPOTS>2.0.CO;2DOIUNSPECIFIED
http://geology.gsapubs.org/content/14/7/567PublisherUNSPECIFIED
http://geology.geoscienceworld.org/content/14/7/567PublisherUNSPECIFIED
http://resolver.caltech.edu/CaltechAUTHORS:20130508-152220795Related ItemUNSPECIFIED
Additional Information:© 1986 Geological Society of America. Manuscript received November 4, 1985; Revised manuscript received March 17, 1986; Manuscript accepted March 28, 1986. We thank N. J. Silberling and Paul Stone for their reviews of the manuscript and C. M. Conway for his help in collecting and describing the volcanic pebbles and cobbles from the Chinle Formation.
Record Number:CaltechAUTHORS:20130508-152950143
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20130508-152950143
Official Citation: John H. Stewart, Thomas H. Anderson, Gordon B. Haxel, Leon T. Silver, and James E. Wright Late Triassic paleogeography of the southern Cordillera: The problem of a source for voluminous volcanic detritus in the Chinle Formation of the Colorado Plateau region Geology, July, 1986, v. 14, p. 567-570, doi:10.1130/0091-7613(1986)14<567:LTPOTS>2.0.CO;2
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:38367
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:13 May 2013 19:41
Last Modified:13 May 2013 19:41

Repository Staff Only: item control page