Sequence stratigraphy and stratigraphic architecture of the upper Mississippian lower Hinton Formation: Appalachian Basin, West Virginia, USA Public Deposited

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  • March 21, 2019
  • Smith, Tyson
    • Affiliation: College of Arts and Sciences, Department of Geological Sciences
  • Cyclothems are a characteristic feature of Pennsylvanian Appalachian basin stratigraphy. These high frequency transgressive-regressive cycles have been attributed to glacioeustatic fluctuation, but comparatively little work has been done until recent with regards to identification of similar cycles in the upper Mississippian despite the presence of continental ice sheets during that time. This study provides evidence for the presence of high frequency, transgressive-regressive cycles during the late Mississippian, similar to Pennsylvanian cyclothems. The eight trangressive-regressive episodes identified within the study interval occurred over a roughly 2.5 million year span in the late Mississippian. Assuming that these are cyclic in nature, they exhibit a 4th order periodicity of ~300 thousand years. The character of these cycles appears to be modulated by a 3rd order lowstand and transgressive trend. This study documents how multiple controls on relative sea level, which operate on different timescales, influence sedimentation and subsequently shape the sedimentary record.
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  • Bartek, Louis Robert
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  • University of North Carolina at Chapel Hill
  • Open access

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