2014 GSA Annual Meeting in Vancouver, British Columbia (19–22 October 2014)

Paper No. 346-5
Presentation Time: 2:00 PM

HIGH-RESOLUTION MISSOURIAN (UPPER PENNSYLVANIAN) STRATIGRAPHY OF MIAMI COUNTY, KANSAS: INTEGRATED LITHOSTRATIGRAPHY, BIOSTRATIGRAPHY, AND δ13CCARB CHEMOSTRATIGRAPHY


OBORNY, Stephan C.1, LUDVIGSON, Greg A.2, SAWIN, Robert S.3, HENTHORNE, Robert4, HECKEL, Philip H.1 and CRAMER, Bradley D.1, (1)Department of Earth and Environmental Sciences, University of Iowa, 115 Trowbridge Hall, Iowa City, IA 52242, (2)Kansas Geological Survey, University of Kansas, 1930 Constant Ave, Lawrence, KS 66047, (3)Kansas Geological Survey, University of Kansas, 1930 Constant Avenue, Lawrence, KS 66047-3724, (4)Kansas Department of Transportation, Bureau of Structures and Geotechnical Services, Eisenhower State Office Building, 700 S.W. Harrison Street, Topeka, KS 66603-3745

Recent investigations of bedrock units of the Kansas City Group within Miami County, Kansas, (just south of metropolitan Kansas City) have revealed misidentification and miscorrelation of members throughout the area. These miscorrelations are largely due to a complex paleo-topography generated by thick algal mound limestone structures and allochthonous deltaic sediments that together resulted in significant regional variability in facies distribution and member thicknesses of up to 15+ and 30+ meters, respectively. These revised stratigraphic relationships within Miami County demonstrate previous miscorrelation with members in neighboring areas and support recent revision to the chronostratigraphic correlation within the Kansas City Group.

This high-resolution study utilized detailed cm-scale lithological analyses of 33 drill cores, and provides improved conodont biostratigraphic information in addition to the first whole-rock carbonate carbon isotope δ13Ccarb chemostratigraphic data from the Kansas City and Lansing groups in Miami County. This study improves our understanding of the Missourian depositional systems within the study area by providing high resolution sequence-stratigraphic analysis of the mound-bank paleo-topography within Miami County, Kansas, and ultimately improves the geological mapping of the Kansas City Group, particularly of the Wyandotte Limestone and Lane Shale, which are economically important rock sources in the metropolitan area.

Session No. 346

T244. New Advances and Applications in Sequence Stratigraphy
Wednesday, 22 October 2014: 1:00 PM-5:00 PM
207 (Vancouver Convention Centre-West)
Geological Society of America Abstracts with Programs. Vol. 46, No. 6, p.833
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