Origin of the Jeptha Knob structure, Kentucky

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ID: 305772
1968
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Abstract
A magnetic survey of Jeptha Knob showed there is probably no basement counterpart of the surface structure. A gravity survey revealed a +1 mgal anomaly which can be explained by near-surface lithologies. Drilling indicates that the deformation decreases with depth and is shallow, and petrologic and structural data eliminate an endogenetic origin. The most likely exogenetic origin is hypervelocity impact of a meteorite or comet. A model of the original Jeptha Knob crater was constructed with the following dimensions: apparent diameter 6,600 feet; apparent depth 920 feet; rim height 290 feet; rim width 1,300 feet; depth to the limit of major brecciation 1,600 feet. This crater was subsequently filled and covered by sediments; the filling material was mainly fallback and slumped materials from the sides.
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openalex_W2332257024 Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors C. R. Seeger
Journal american journal of science
Year 1968
DOI
10.2475/ajs.266.8.630
URL
https://ajs.scholasticahq.com/article/59260.pdf
Keywords Keywords not found

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