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Conodont Biostratigraphy and δ¹³C Chemostratigraphy of the Salina Group (Silurian) in Western Ohio and Eastern Indiana

Swift, Robert James Anthony
http://rave.ohiolink.edu/etdc/view?acc_num=osu1313675443

Abstract Details

2011, Master of Science, Ohio State University, Geological Sciences.
The Salina Group type area in New York State is well defined, but strata assigned to the Salina Group in Ohio and Indiana may not actually correlate in age or depositional equivalence with the New York units. The integrated tools of bio- and chemostratigraphy, with the well-studied lithostratigraphy, are enabling Paleozoic workers around the world to better constrain regional units in time and space. For the Wenlock and Ludlow, the Mulde and Lau δ¹³C excursions can be used as correlative tools. A well developed conodont biozonation has also been applied successfully in North America. Four localities were sampled and processed for conodont biostratigraphy and δ¹³C stratigraphy. Two localities were sampled on the eastern flank of the Cincinnati Arch, one was sampled on the western flank of the Arch, and the fourth was a core drilled in northern Indiana that penetrates the Salina Group some 800 ft underground. The strata from two Ohio localities contained conodonts that can be used as age indicators. Duff Quarry (Huntsville, Ohio) yielded a fauna comprised of Ozarkodina species of O. confluens affinity and Oulodus species. In each case, comparisons to previous work indicate an age of late Ludlow to early Pridoli. Con Ag Quarry (St. Mary’s, Ohio) yielded Pseudooneotodus linguicornis, and also the Mulde δ¹³C excursion in the Greenfield Dolomite, which leads to a conclusive age for the Greenfield Dolomite of Homerian. The Waldron Member of the Pleasant Mills Formation in Indiana contains the Mulde δ¹³C excursion, as expected due to its stratigraphic position and reports of the Mulde in the Waldron Member outside Indiana. Salina Group strata in northeastern Indiana have an age of Homerian and younger, according to the excursion and conodonts from the HA7 Core. This is supported by the positioning of the Mulde excursion within the oldest anhydrite-hosting portion of that core as well as zonal conodonts appearances including Ozarkodina bohemica longa and Ozarkodina snajdri.
Mark Kleffner, PhD (Advisor)
William Ausich, PhD (Committee Member)
Matthew Saltzman, PhD (Committee Member)
101 p.
Earth; Geology; Paleontology
Silurian; Wenlock; Ludlow; biostratigraphy; chemostratigraphy; conodont; stable isotope stratigraphy

Recommended Citations

Citations

  • Swift, R. J. A. (2011). Conodont Biostratigraphy and δ¹³C Chemostratigraphy of the Salina Group (Silurian) in Western Ohio and Eastern Indiana [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313675443

    APA Style (7th edition)

  • Swift, Robert. Conodont Biostratigraphy and δ¹³C Chemostratigraphy of the Salina Group (Silurian) in Western Ohio and Eastern Indiana. 2011. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1313675443.

    MLA Style (8th edition)

  • Swift, Robert. "Conodont Biostratigraphy and δ¹³C Chemostratigraphy of the Salina Group (Silurian) in Western Ohio and Eastern Indiana." Master's thesis, Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1313675443

    Chicago Manual of Style (17th edition)

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This open access ETD is published by The Ohio State University and OhioLINK.