U-Pb geochronology of detrital zircons from the Snow Lake pendant, central Sierra Nevada - implications for Late Jurassic-Early Cretaceous dextral strike-slip faulting

Scott W. Grasse; George E. Gehrels; Mary M. Lahren; Richard A. Schweickert; Andrew P. Barth

doi:10.1130/0091-7613(2001)029<0307:UPGODZ>2.0.CO;2

U-Pb geochronology of detrital zircons from the Snow Lake pendant, central Sierra Nevada - implications for Late Jurassic-Early Cretaceous dextral strike-slip faulting

Scott W. Grasse, George E. Gehrels, Mary M. Lahren, Richard A. Schweickert, Andrew P. Barth

Geosciences

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

The Snow Lake pendant is underlain by a thick (>1500 m) sequence of predominantly quartzite, marble, and schist that has previously been correlated with miogeoclinal strata of the western Mojave Desert. In this study, U-Pb analyses of detrital zircons from the Snow Lake pendant have been conducted to test for possible correlations with strata of the Cordilleran miogeocline, as well as nearby rocks of the Roberts Mountains allochthon and the Shoo Fly Complex. Zircons from Snow Lake strata yield dominant age groups that strongly support correlation of Snow Lake strata with miogeoclinal strata in the Mojave Desert. This correlation provides additional support for previous suggestions that the Snow Lake pendant was displaced ∼400 km northward along the Mojave-Snow Lake fault.

Original language	English (US)
Pages (from-to)	307-310
Number of pages	4
Journal	Geology
Volume	29
Issue number	4
DOIs	https://doi.org/10.1130/0091-7613(2001)029<0307:UPGODZ>2.0.CO;2
State	Published - Apr 2001

Keywords

Cordillera
Miogeocline
Sierra Nevada
U-Pb geochronology
Zircon

ASJC Scopus subject areas

Geology

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10.1130/0091-7613(2001)029<0307:UPGODZ>2.0.CO;2

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title = "U-Pb geochronology of detrital zircons from the Snow Lake pendant, central Sierra Nevada - implications for Late Jurassic-Early Cretaceous dextral strike-slip faulting",

abstract = "The Snow Lake pendant is underlain by a thick (>1500 m) sequence of predominantly quartzite, marble, and schist that has previously been correlated with miogeoclinal strata of the western Mojave Desert. In this study, U-Pb analyses of detrital zircons from the Snow Lake pendant have been conducted to test for possible correlations with strata of the Cordilleran miogeocline, as well as nearby rocks of the Roberts Mountains allochthon and the Shoo Fly Complex. Zircons from Snow Lake strata yield dominant age groups that strongly support correlation of Snow Lake strata with miogeoclinal strata in the Mojave Desert. This correlation provides additional support for previous suggestions that the Snow Lake pendant was displaced ∼400 km northward along the Mojave-Snow Lake fault.",

keywords = "Cordillera, Miogeocline, Sierra Nevada, U-Pb geochronology, Zircon",

author = "Grasse, {Scott W.} and Gehrels, {George E.} and Lahren, {Mary M.} and Schweickert, {Richard A.} and Barth, {Andrew P.}",

year = "2001",

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doi = "10.1130/0091-7613(2001)029<0307:UPGODZ>2.0.CO;2",

language = "English (US)",

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AU - Grasse, Scott W.

AU - Gehrels, George E.

AU - Lahren, Mary M.

AU - Schweickert, Richard A.

AU - Barth, Andrew P.

PY - 2001/4

Y1 - 2001/4

N2 - The Snow Lake pendant is underlain by a thick (>1500 m) sequence of predominantly quartzite, marble, and schist that has previously been correlated with miogeoclinal strata of the western Mojave Desert. In this study, U-Pb analyses of detrital zircons from the Snow Lake pendant have been conducted to test for possible correlations with strata of the Cordilleran miogeocline, as well as nearby rocks of the Roberts Mountains allochthon and the Shoo Fly Complex. Zircons from Snow Lake strata yield dominant age groups that strongly support correlation of Snow Lake strata with miogeoclinal strata in the Mojave Desert. This correlation provides additional support for previous suggestions that the Snow Lake pendant was displaced ∼400 km northward along the Mojave-Snow Lake fault.

AB - The Snow Lake pendant is underlain by a thick (>1500 m) sequence of predominantly quartzite, marble, and schist that has previously been correlated with miogeoclinal strata of the western Mojave Desert. In this study, U-Pb analyses of detrital zircons from the Snow Lake pendant have been conducted to test for possible correlations with strata of the Cordilleran miogeocline, as well as nearby rocks of the Roberts Mountains allochthon and the Shoo Fly Complex. Zircons from Snow Lake strata yield dominant age groups that strongly support correlation of Snow Lake strata with miogeoclinal strata in the Mojave Desert. This correlation provides additional support for previous suggestions that the Snow Lake pendant was displaced ∼400 km northward along the Mojave-Snow Lake fault.

KW - Cordillera

KW - Miogeocline

KW - Sierra Nevada

KW - U-Pb geochronology

KW - Zircon

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U-Pb geochronology of detrital zircons from the Snow Lake pendant, central Sierra Nevada - implications for Late Jurassic-Early Cretaceous dextral strike-slip faulting

Abstract

Keywords

ASJC Scopus subject areas

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