Conodont micropaleontology and biostratigraphy of the Silverwood limestone member, Universal limestone member, and Salt Creek limestone lens (Desmoinesian)

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dc.contributor.advisor Orr, R. William en_US
dc.contributor.author Stanley, Sarah G. en_US
dc.coverage.spatial n-us-in en_US
dc.date.accessioned 2011-06-03T19:33:21Z
dc.date.available 2011-06-03T19:33:21Z
dc.date.created 1982 en_US
dc.date.issued 1982
dc.identifier LD2489.Z78 1982 .S74 en_US
dc.identifier.uri http://cardinalscholar.bsu.edu/handle/handle/182633
dc.description.abstract Conodonts were extracted from three limestone units in westcentral Indiana: the Silverwood Limestone Member of the Staunton Formation; the Universal Limestone Member of the Dugger Formation; and from a new unit, the informally named Salt Creek limestone lens (Dagger Formation). Identified conodonts include: Adetognathus gigantus (Gunnell), 1933; Adetognathus lautus (Gunsell), 1933; Idiognathodus delicatus Gunnell, 1931; Idiognathodus sinuosis Ellison and Graves, 1941; Neognathodus bassleri bassleri (Harris and Hollingsworth), 1933; Spathognathodus coloradoensis Murray and Chronic, 1965; S athognathodus minutes Ellison, 1941; Spathognathodus orphanus Merrill, 1973; Streptognathodus holmesi Gunnell, 1933; and Streptognathodus minatus Gunnell, 1933.The presence of the genus Streptognathodus in the Salt Creek limestone lens supports the hypothesis that streptognathodid numbers increase in rocks of mid-Desmoinesian age or younger. The scarcity of conodonts in the Universal Limestone Member may ba attributed to storm-related deposition of unusually large quantities of carbonate sediments, effectively diluting the conodont population, followed by infaunal reworking of these sediments during a period of little or no deposition.The occurrence of conodonts establishes that the Silverwood limestone Member is early to middle Desmoinesian in age, the Universal Limestone Member is middle to late Desmoinesian in age, and that the newly discovered Salt Creek limestone lens is middle to late Desmoinesian in age.
dc.format.extent vii, 77 leaves, 3 leaves of plates : ill. ; 28 cm. en_US
dc.source Virtual Press en_US
dc.subject.lcsh Conodonts. en_US
dc.subject.lcsh Paleontology -- Indiana. en_US
dc.title Conodont micropaleontology and biostratigraphy of the Silverwood limestone member, Universal limestone member, and Salt Creek limestone lens (Desmoinesian) en_US
dc.description.degree Thesis (M.S.)
dc.identifier.cardcat-url http://liblink.bsu.edu/catkey/386141 en_US


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  • Master's Theses [5318]
    Master's theses submitted to the Graduate School by Ball State University master's degree candidates in partial fulfillment of degree requirements.

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