Detrital zircon link between headwaters and terminus of the upper triassic Chinle-Dockum paleoriver system

Nancy R Riggs, T. M. Lehman, G. E. Gehrels, W. R. Dickinson

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Abstract

New detrital-zircon geochronologic data reveal that a through-going paleoriver connected Texas with Nevada in Late Triassic time. Sandstone from the Upper Triassic Santa Rosa Sandstone (Dockum Group) from northwestern Texas contains a detrital zircon suite nearly identical to that found in western Nevada in the Upper Triassic Osobb Formation (Auld Lang Syne Group, correlative with the Chinle Formation). The Santa Rosa Sandstone was derived in large part from the eroded Cambrian core of the Amarillo-Wichita uplift, as evidenced by abundant zircons with ages of 515 to 525 million years. Other zircon grains in the sandstone are Permian, Devonian, Proterozoic, and Archean in age and, with the exception of the Archean grain, are also matched by the population in the Nevada strata.

Original languageEnglish (US)
Pages (from-to)97-100
Number of pages4
JournalScience
Volume273
Issue number5271
StatePublished - Jul 5 1996

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headwater
zircon
Triassic
sandstone
Archean
Proterozoic
Permian
uplift

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Detrital zircon link between headwaters and terminus of the upper triassic Chinle-Dockum paleoriver system. / Riggs, Nancy R; Lehman, T. M.; Gehrels, G. E.; Dickinson, W. R.

In: Science, Vol. 273, No. 5271, 05.07.1996, p. 97-100.

Research output: Contribution to journalArticle

Riggs, NR, Lehman, TM, Gehrels, GE & Dickinson, WR 1996, 'Detrital zircon link between headwaters and terminus of the upper triassic Chinle-Dockum paleoriver system', Science, vol. 273, no. 5271, pp. 97-100.
Riggs, Nancy R ; Lehman, T. M. ; Gehrels, G. E. ; Dickinson, W. R. / Detrital zircon link between headwaters and terminus of the upper triassic Chinle-Dockum paleoriver system. In: Science. 1996 ; Vol. 273, No. 5271. pp. 97-100.
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