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Talwani et al. 2003
Talwani, P., Wildermuth, E. and Parkinson, C.D. (2003). An impact crater in northeast South Carolina inferred from potential field data. Geophysical Research Letters 30: doi: 10.1029/2003GL017051. issn: 0094-8276.

A comparison of recently acquired gravity data with aeromagnetic data for northeastern South Carolina revealed the presence of coincident circular anomalies near Johnsonville. These ~11 km diameter circular lows meet the geophysical criteria for those associated with buried complex impact craters. Within the magnetic low is a northwest-southeast structure enclosed by two concentric moat-like lows to its northeast and southwest. The pattern of surface streams passing above the structure is also consistent with the interpretation of a buried impact crater. Fortuitously, a drill core was available from a borehole drilled within these lows. The core includes ~10 m of Paleozoic crystalline Piedmont basement. Petrographic analysis of basement samples from the core revealed indications of shock metamorphic texture.

BACKGROUND DATA FILES

Abstract

Keywords
Exploration Geophysics, Gravity methods, Geomagnetism and Paleomagnetism, Magnetic anomaly modeling, Global Change, Impact phenomena
Journal
Geophysical Research Letters
http://www.agu.org/journals/gl/
Publisher
American Geophysical Union
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