Monday, June 18, 2012


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.

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