Show simple item record Simonelli, Glenn 2007-06-22T19:26:03Z 2007-06-22T19:26:03Z 2007-05
dc.description.abstract The Mansfield Formation of southwestern Indiana is comprised of varying sequences of mudstones, sandstones, shales, limestones and coals that date from the Pennsylvanian. Two outcrops in Martin County, Indiana, contain bedded and cross-bedded sandstones and laminated and friable siltstones, with a coal seam in one outcrop. Scouring, ripples and clay drapes are common in both outcrops. Carbon and sulfur analysis reveals total sulfur values consistently below 0.1wt.% and widely fluctuating C/S ratios. Trace fossils include Sclarituba isp., Treptichnus isp., Haplichnus isp., Skolithos isp. and tetrapod tracks. Roots and other plant material are common in some units. Palynological analyses of coal samples place the stratigraphically higher of the two outcrops to a position between the St. Meinrad and Blue Creek coals, thus dating the outcrop to the mid-Atokan. Collectively, the data point to a marginal marine depositional environment with brackish and freshwater fluvial influence and occasional sub-aerial exposure. en
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dc.language.iso en_US en
dc.rights This work is licensed under the Creative Commons Attribution-NonCommercial-ShareAlike 2.5 License. To view a copy of this license, visit or send a letter to Creative Commons, 543 Howard Street, 5th Floor, San Francisco, California, 94105, USA. en
dc.rights.uri en
dc.subject Mansfield Formation en
dc.subject Pennsylvanian en
dc.subject Martin County, Indiana en
dc.subject Sedimentology en
dc.subject Stratigraphy en
dc.subject Geochemistry en
dc.subject Palynology en
dc.subject Ichnology en
dc.subject Trace Fossils en
dc.title Sedimentology, Geochemistry and Paleobiology of a Marginal Marine Depositional Environment, the Mansfield Formation, Martin County, Indiana en
dc.type Thesis en

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