Earliest Jurassic U-Pb ages from carbonate deposits in the Navajo Sandstone, southeastern Utah, USA | Zendy

Judith Totman Parrish | Zendy; E. Troy Rasbury | Zendy; Marjorie A. Chan | Zendy; Stephen T. Hasiotis | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Open Access

Earliest Jurassic U-Pb ages from carbonate deposits in the Navajo Sandstone, southeastern Utah, USA

Author(s) -

Judith Totman Parrish,

E. Troy Rasbury,

Marjorie A. Chan,

Stephen T. Hasiotis

Publication year - 2019

Publication title -

geology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 2.609

H-Index - 215

eISSN - 1943-2682

pISSN - 0091-7613

DOI - 10.1130/g46338.1

Subject(s) - geology , navajo , stratigraphy , plateau (mathematics) , carbonate , paleontology , archaeology , geochemistry , tectonics , geography , mathematical analysis , philosophy , linguistics , materials science , mathematics , metallurgy

New uranium-lead (U-Pb) analyses of carbonate deposits in the Navajo Sandstone in southeastern Utah (USA) yielded dates of 200.5 ± 1.5 Ma (earliest Jurassic, Hettangian Age) and 195.0 ± 7.7 Ma (Early Jurassic, Sinemurian Age). These radioisotopic ages—the first reported from the Navajo erg and the oldest ages reported for this formation—are critical for understanding Colorado Plateau stratigraphy because they demonstrate that initial Navajo Sandstone deposition began just after the Triassic and that the base of the unit is strongly time-transgressive by at least 5.5 m.y.

The content you want is available to Zendy users.

Already have an account? Click here to sign in.

Having issues? You can contact us here

Accelerating Research