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The Kaskaskia-Absaroka Boundary in the Subsurface of Athens County, Ohio

Stobart, Ryan Patrick
http://orcid.org/0000-0003-0843-0294
http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1574437212920114

Abstract Details

2019, Master of Science (MS), Ohio University, Geological Sciences (Arts and Sciences).
The Kaskaskia/Absaroka boundary is an unconformable surface that separates the Lower Pennsylvanian Sharon Sandstone from the Mississippian Maxville Limestone or Logan Formation. Previous maps of the drainage pattern formed on the boundary lacked detailed spatial control or were of regional scale. This study examined 348 geophysical well logs from four townships in southwestern Athens County, which were used to create cross-sections, and isopach maps of the gross and net sandstone, the Maxville Limestone, and the total Mississippian interval. Correlation and isopach data show that thick sandstones present in the wells of the study interval were unambiguously Early Pennsylvanian incised valley deposits of the Sharon Sandstone that were deposited in a braided fluvial environment. The fluvial sandstones are interbedded with mudstones that have gamma-ray and porosity values that differ from the underlying marine Mississippian sediments, suggesting a possible base level change associated with eustatic sea level rise. The change from laterally continuous Mississipian marine strata to the incised fluvial valleys marks a shift in tectonic from dynamic to thrust loading. The location of the main channels of the drainage system formed on the older Mississippian strata was close to the boundary between the forebulge and backbulge regions of the Appalachian foreland basin.
Gregory Nadon (Advisor)
Gregory Springer (Committee Member)
Xizhen Schenk (Committee Member)
89 p.
Geological; Geology; Petroleum Geology; Sedimentary Geology
Geophysical Well Logs; Geology; Sedimentary Geology; Stratigraphy; Sharon Sandstone

Recommended Citations

Citations

  • Stobart, R. P. (2019). The Kaskaskia-Absaroka Boundary in the Subsurface of Athens County, Ohio [Master's thesis, Ohio University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1574437212920114

    APA Style (7th edition)

  • Stobart, Ryan . The Kaskaskia-Absaroka Boundary in the Subsurface of Athens County, Ohio. 2019. Ohio University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1574437212920114.

    MLA Style (8th edition)

  • Stobart, Ryan . "The Kaskaskia-Absaroka Boundary in the Subsurface of Athens County, Ohio." Master's thesis, Ohio University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=ohiou1574437212920114

    Chicago Manual of Style (17th edition)

ohiou1574437212920114
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© 2019, all rights reserved.
This open access ETD is published by Ohio University and OhioLINK.