Highlights

Validation of paleoclimate models and reconstructions requires detailed sedimentologic and stratigraphic analyses.  Poland and Sims characterize sediments, sedimentary structures, surface hierarchy, and stratigraphic patterns of the Rush Spring Sandstone, a Permian unit in the southern midcontinent (USA).  The analyses of styles of sedimentation highlight spatial and temporal changes in distribution of erg, erg-margin, and extradune deposits.  Collectively, these data are interpreted to suggest a monsoonal wind regime, consistent with atmospheric circulation models for the Guadalupian.

Sedimentology of An Erg To An Erg-Margin Depositional System, the Rush Springs Sandstone of Western Oklahoma, U.S.A.: Implications for Paleowinds Across Northwestern Pangea During the Guadalupian (Middle Permian) by Zachary A. Poland and Alexander R. Simms