A shallow seismic refraction study of the Versailles cryptoexplosion structure, central Kentucky

Details A shallow seismic refraction study of the Versailles cryptoexplosion structure, central Kentucky A shallow seismic refraction study of the Versailles cryptoexplosion structure, central Kentucky

Mar 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991metic..26...47h&link_type=abstract

Meteoritics (ISSN 0026-1114), vol. 26, March 1991, p. 47-53. University of Kentucky-supported research.

Mathematics

Logic

1

Bedrock, Breccia, Propagation Velocity, Refracted Waves, Seismic Waves, Structural Properties (Geology), Craters, Deformation, Dolomite (Mineral), Geological Faults, Shatter Cones, Strata

Scientific paper

The Versailles cryptoexplosion structure, located in central Kentucky, contains a partially brecciated central uplift and a boundary marked by arcuate faulting. Seismic refraction data were used to divide the structure into distinct units on the basis of velocity. A zone of brecciated material shows a decrease in velocity compared with surrounding rocks. Locally thickened strata are present on the flanks of the central uplift. An increase of the bedrock velocity in the area surrounding the structure suggests localized dolomization of fractured bedrock, and a plug of fractured strata near the base of the brecciation appears to be uplifted. Based on the geometry of deformation seen in known impact structures, and the integration of this study with previous geological and geophysical work in the area, it is suggested that the results support the interpretation of the Versailles structure as an eroded astrobleme (Black, 1964b; Seeger, 1972).

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