ESTONIAN ACADEMY
PUBLISHERS
eesti teaduste
akadeemia kirjastus
PUBLISHED
SINCE 1952
 
Earth Science cover
Estonian Journal of Earth Sciences
ISSN 1736-7557 (Electronic)
ISSN 1736-4728 (Print)
Impact Factor (2022): 1.1
Short communication
Using 3-D mapping to understand an Upper Ordovician buildup and facies complex in the upper Lexington Limestone, central Kentucky, USA; pp. 14–17
PDF | https://doi.org/10.3176/earth.2023.81

Authors
Sean Davis, Frank R. Ettensohn, William M. Andrews, Gustavo Martins
Abstract

The upper parts of the Upper Ordovician Lexington Limestone in central Kentucky, USA, are interpreted to reflect a structurally controlled carbonate buildup, represented by a facies mosaic of shoal complexes and interbedded shale units. Facies intertonguing is complex and two-dimensional (2-D) mapping has been difficult. In this project, we converted 2-D maps to 3-D maps to show the extent of various facies and the complex nature of intertonguing. The resulting 3-D maps can be viewed from various vantage points and show the likely influence of basement structures as well as the results of post-depositional structural activity.

References

Black, D. F. B., Cressman, E. R. and MacQuown, W. C., Jr. 1965. The Lexington Limestone (Middle Ordovician) of central Kentucky. U.S. Geological Survey Bulletin1224-C.

Brett, C. E., McLaughlin, P. I., Cornell, S. R. and Baird, G. C. 2004. Comparative sequence stratigraphy of two classic Upper Ordovician successions, Trenton Shelf (New York–Ontario) and Lexington Platform (Kentucky–Ohio): Implications for eustasy and local tectonism in eastern Laurentia. Palaeogeography, Palaeoclimatology, Palaeoecology210, 295–329.
https://doi.org/10.1016/j.palaeo.2004.02.038

Cressman, E. R. 1973. Lithostratigraphy and depositional environ­ments of the Lexington Limestone (Ordovician) of central Kentucky. U.S. Geological Survey Professional Paper768.
https://doi.org/10.3133/pp768

Ettensohn, F. R. 1992. Regressive facies in the upper Lexington Limestone: Tanglewood-Millersburg relationships. In Changing Interpretations of Kentucky Geology – Layer-Cake, Facies, Flexure and Eustasy (Ettensohn, F. R., ed.). Ohio Division of Geological Survey Miscellaneous Report No. 5, 62–66.

Ettensohn, F. R., Kasl, J. M. and Stewart, A. K. 2004. Structural inversion and origin of a Late Ordovician (Trenton) carbonate buildup: evidence from the Tanglewood and Devils Hollow members, Lexington Limestone, central Kentucky (USA). Palaeogeography, Palaeoclimatology, Palaeoecology210, 249–266.
https://doi.org/10.1016/j.palaeo.2004.02.040

McFarlan, A. C. 1943. Geology of Kentucky. University of Kentucky, Lexington.

Shaver, R. H. 1985. Midwestern basins and arches region (MBA).  In Correlation of Stratigraphic Units of North America (Childs, O. E., Steele, G., Salvador, A. and Lindberg, F. A., eds). American Association of Petroleum Geologists. 

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