T244 The Green River Formation Revisited: Crucible for New Concepts and Advances in Paleoclimatology, Tectonics, Chronostratigraphy, Sequence Stratigraphy, Isotope Geochemistry, and Paleontology (Posters)

STRATIGRAPHIC CORRELATION OF THE EARLY CENOZOIC INTERMONTANE LACUSTRINE DEPOSITS OF WYOMING, COLORADO, AND UTAH

Paper number: T244-18
Program: Technical Sessions
Time: 1:30 PM – 5:30 PM

Authors

Abstract

Compilation of paleomagnetic, biostratigraphic, and geochronologic data from the intermontane lacustrine basins of Wyoming, Colorado, and Utah provide a magneto-biostratigraphic framework for regional stratigraphic correlation. Alternating sequences of well-developed paleosols, alluvial and fluvial mudstone and sandstone deposits (Wasatch, Willwood, Wind River, and Bridger formations), and lacustrine shale and limestone deposits (Green River, Tatman, and Wind River formations) characterize the various intermontane basins. The alternating fluvial and lacustrine sediments preserve a well-documented mammalian succession through the Clarkforkian, Wasatchian, and Bridgerian North American Land Mammal Ages (NALMA) allowing for biostratigraphic correlation between the various basins.