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Detrital zircon provenance and depositional links of Mesozoic Sierra Nevada intra-arc strata

Attia, Snir and Paterson, Scott R. and Saleeby, Jason B. and Cao, Wenrong (2021) Detrital zircon provenance and depositional links of Mesozoic Sierra Nevada intra-arc strata. Geosphere, 17 (5). pp. 1422-1453. ISSN 1553-040X. doi:10.1130/ges02296.1.

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A compilation of new and published detrital zircon U-Pb age data from Permo-Triassic to Cretaceous intra-arc strata of the Sierra Nevada (eastern California, USA) reveals consistent sedimentary provenance and depositional trends across the entire Sierra Nevada arc. Detrital zircon age distributions of Sierra Nevada intra-arc strata are dominated by Mesozoic age peaks corresponding to coeval or just preceding arc activity. Many samples display a spread of pre-300 Ma ages that is indistinguishable from the detrital age distributions of pre-Mesozoic prebatholithic framework strata and southwestern Laurentian continental margin deposits. Synthesis of detrital zircon age data with tectonostratigraphic constraints indicates that a marine to subaerial arc was established in Triassic time, giving way to widespread shallow- to deep-marine deposition in latest Triassic to Early Jurassic time that continued until the emergence of the arc surface in the Early Cretaceous. No data presented herein require the existence of Mesozoic exotic terranes and/or outboard arcs that were previously hypothesized to have been accreted to the Sierra Nevada. We conclude that Sierra Nevada intra-arc strata formed within a coherent depositional network that was intimately linked to the southwestern United States Cordilleran margin throughout the span of Mesozoic arc activity.

Item Type:Article
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Attia, Snir0000-0001-8582-8197
Paterson, Scott R.0000-0003-0370-9528
Cao, Wenrong0000-0002-9303-2815
Additional Information:© 2021 The Authors. Gold Open Access: This paper is published under the terms of the CC-BY-NC license. Received 2 June 2020; Revision received 18 March 2021; Accepted 24 May 2021. Paterson gratefully acknowledges support from National Science Foundation grants EAR-1524798, 1019636, 0537892, and 0212276 and U.S. Geological Survey EDMAP grants G16AC00160, G15AC00134, G13AC00120, G12AC20178, and 08HQAG0057. National Science Foundation EAR-1338583 supported analyses at the Arizona LaserChron Center. We would like to express our immense gratitude to Arizona LaserChron Center personnel for their extensive assistance with detrital zircon geochronology analyses, which represents an invaluable contribution to this effort. We acknowledge Katie Ardill, Vali Memeti, Lawford Anderson, and undergraduate participants in the Undergraduate Team Research program for their help in collecting samples from the Ritter Range, Saddlebag Lake, and Boyden Cave pendants and central WMB as well as conducting geochronology analyses; Calvin Stevens and Paul Stone for collecting the Mount Pinchot pendant sample; Chuck Herzig for assistance during sampling along the Merced River; Elisabeth Nadin for her guidance and help during sampling in the Durrwood pendant area; and David Greene for sharing samples collected from the Mineral King pendant. We also thank editors Nancy Riggs and David Fastovksy as well as two anonymous reviewers for their efforts, which greatly improved this manuscript.
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Issue or Number:5
Record Number:CaltechAUTHORS:20211022-212605529
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Official Citation:Snir Attia, Scott R. Paterson, Jason Saleeby, Wenrong Cao; Detrital zircon provenance and depositional links of Mesozoic Sierra Nevada intra-arc strata. Geosphere 2021; 17 (5): 1422–1453. doi:
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:111614
Deposited By: Tony Diaz
Deposited On:26 Oct 2021 18:14
Last Modified:26 Oct 2021 22:36

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