An analysis of fracture systems, lithologic character and kinematic history of Paleozoic rock formations in a portion of southeastern Indiana

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dc.contributor.advisor Samuelson, Alan C. en_US Keene, David G. en_US
dc.coverage.spatial n-us-in en_US 2011-06-03T19:34:59Z 2011-06-03T19:34:59Z 1989 en_US 1989
dc.identifier LD2489.Z78 1989 .K44 en_US
dc.description.abstract This is an analysis of fractures occurring within the Paloezoic sedimentary rocks in a portion of southeastern Indiana. Fifteen hundred seventy-two fractures were used in analysis of distribution, orientation, pervasiveness, persistence, and intensity. The data collected is representative of eight counties and seventeen different collection sites.All fracture data were given an associated numerical value identifying each variable used for analysis and recorded into computer data files. A computer program was used for statistical analysis and construction of equal area nets which graphically displayed the distribution of variables. The compilation of the fracture data allowed for close interpretative analyses of variables and correlation of the orientation and distribution of the fractures within the study area.This study revealed that two orthogonal fracture systems exist in southeastern Indiana. The fracture set containing the largest percentage of those measured is oriented N11W with its compliment oriented N73W. The orientation of the second largest fracture set is N8E with its compliment oriented N82°W.The effects of the tectonic history as well as contemporary stress on the area are discussed relative to their effects on the overall distribution of fracture sets.Evidence is presented to substantiate a reactivation of the Cincinnati Arch as indicated in the Devonian-Mississippian lithologic units from data collected in the southeastern portion of the study area. Fracture data correlating to these units displays a rotation of the major fracture set maxima 90w. This data is supported by radiometric dates from the Belfast member of the Brassfield Limestone in which Laskouski,, correlated a reactivation of the arch.Also within this study are lithologic descriptions of all the Paleozoic formations used for data collection. These descriptions were developed over a three year period from extensive field observation.A map of the study area is presented displaying the distribution and orientation of the fractures recorded at each data collection site.
dc.description.sponsorship Department of Geology
dc.format.extent 173 leaves : ill. ; 28 cm. en_US
dc.source Virtual Press en_US
dc.subject.lcsh Rocks -- Fracture. en_US
dc.subject.lcsh Sedimentary rocks -- Indiana. en_US
dc.subject.lcsh Formations (Geology) -- Indiana. en_US
dc.subject.lcsh Geology, Stratigraphic -- Paleozoic. en_US
dc.title An analysis of fracture systems, lithologic character and kinematic history of Paleozoic rock formations in a portion of southeastern Indiana en_US Thesis (M.S.)
dc.identifier.cardcat-url en_US

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  • Master's Theses [5510]
    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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