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GEOREF RECORD

Geochronological constraints on Neoproterozoic rifting and onset of the Marinoan glaciation from the Kingston Peak Formation in Death Valley, California (USA)

Lyle L. Nelson, Emily F. Smith, Eben B. Hodgin, James L. Crowley, Mark D. Schmitz and Francis A. Macdonald
Geochronological constraints on Neoproterozoic rifting and onset of the Marinoan glaciation from the Kingston Peak Formation in Death Valley, California (USA)
Geology (Boulder) (July 2020) 48 (11): 1083-1087

Abstract

Death Valley (California, USA) hosts iconic Cryogenian snowball Earth deposits, but the lack of direct geochronological constraints has permitted a variety of correlations and age models. Here, we report two precise zircon U-Pb isotope dilution-thermal ionization mass spectrometry dates for the Kingston Peak Formation: a volcanic eruptive age of 705.44+ or -0.28 Ma from the synglacial Limekiln Spring Member, and a maximum depositional age of 651.69+ or -0.64 Ma from the nonglacial Thorndike submember, which is below the Wildrose diamictite. These dates confirm that the Limekiln Spring and Surprise Members were deposited during the Sturtian glaciation, while the Wildrose submember is a Marinoan glacial deposit, and the overlying Sentinel Peak Member of the Noonday Formation is a Marinoan cap carbonate. Additionally, the age from the Thorndike submember supersedes existing radioisotopic ages from the Datangpo Formation in South China as the youngest constraint on the onset of the Marinoan glaciation, demonstrating that the Cryogenian nonglacial interlude lasted for at least 9 m.y. and the Marinoan glaciation was <17 m.y. long. Cryogenian glaciation in western Laurentia occurred against the backdrop of approximately 85 m.y. of episodic rift-related subsidence and magmatism within laterally discontinuous, fault-bound basins.


ISSN: 0091-7613
EISSN: 1943-2682
Coden: GLGYBA
Serial Title: Geology (Boulder)
Serial Volume: 48
Serial Issue: 11
Title: Geochronological constraints on Neoproterozoic rifting and onset of the Marinoan glaciation from the Kingston Peak Formation in Death Valley, California (USA)
Affiliation: Johns Hopkins University, Department of Earth and Planetary Sciences, Baltimore, MD, United States
Pages: 1083-1087
Published: 20200713
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 35
Accession Number: 2020-067384
Categories: GeochronologyStratigraphy
Document Type: Serial
Bibliographic Level: Analytic
Illustration Description: illus. incl. strat. col., geol. sketch map
N36°01'00" - N36°01'00", W117°04'60" - W117°04'60"
Secondary Affiliation: Harvard University, USA, United StatesBoise State University, USA, United StatesUniversity of California, Santa Barbara, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2020, American Geosciences Institute. Reference includes data from GeoScienceWorld, Alexandria, VA, United States. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 202041
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