Jinnah, Zubair A.; Roberts, Eric M.; Deino, Alan L.; Larsen, Joseph S.; Link, Paul K.; Fanning, Christopher
In order to better constrain the age and provenance of the Upper Cretaceous Wahweap and Kaiparowits formations in southern Utah, U-Pb SHRIMP ages were obtained for detrital zircons from three sandstone samples, in addition to the first 40Ar-39Ar age for the Wahweap Formation, obtained from a devitrified volcanic ash horizon (bentonite). The ash horizon, located ∼40 m above the base of the Wahweap Formation, yields an age of 80.1 ± 0.3 Ma. The new radiometric data improve upon previous...[Show more]
Items in Open Research are protected by copyright, with all rights reserved, unless otherwise indicated.