Abstract The North American Cordillera orogenic system experienced interrelated cycles of
magmatic arc lulls and flare-ups with associated shifts in isotopic signatures, varying …

The sedimentary record of aeolian sand systems extends from the A rchean to the Q
uaternary, yet current understanding of aeolian sedimentary processes and product remains …

The fossil record of Late Triassic tetrapods can be organized biostratigraphically and
biochronologically into five, temporally successive land-vertebrate faunachrons (LVFs) that …

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) …

Modern, tide‐dominated and tide‐influenced coastlines are characterized by a range of
environments, including deltas, estuaries and lagoons. However, some tide‐dominated …

Abstract The Upper Triassic Popo Agie Formation of the Chugwater Group of Wyoming,
northeastern Utah, and northwestern Colorado has been an enigmatic unit since its …

Eight fossil tetrapod footprints from lake-shore deposits in the Lower Jurassic Moenave
Formation at the St. George Dinosaur Discovery Site (SGDS) in southwestern Utah cannot …

ABSTRACT The Uinta Mountains of northeastern Utah preserve the northernmost outcrops
of classic early Mesozoic stratigraphic units on the Colorado Plateau, and document the …

As a result of the large difference in heat capacity between land and ocean, global climate
and atmospheric circulation patterns over the supercontinent of Pangaea were significantly …

Abstract The Upper Triassic/Lower Jurassic Nugget Sandstone represents a portion of a vast
inland erg of eolian sand dunes that were populated by diverse vertebrates and …