Crooked Creek

 Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Target Rock**  Bolide Type***
 Crooked Creek  Missouri, U.S.A.  N 37° 50'  W 91° 23'  7  320 ± 80  Y  N  S  -

1. Aerial Photograph

2. Geology Superimposed on DEM (image created by Graham Nickerson, Interactive Visualisation Systems)


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Fox, J. H., Allen, V.T. and Heinrich,R., Crooked Creek "cryptovolcanic" structure, Steelville, Missouri (astract). Geological Society of America Bulletin, v. 65, pp. 1252-1253. 1954.
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Hendricks, H. E., The Crooked Creek structure. Snyder, F.G., Williams, J.H. and others, eds., Cryptoexplosive structures in Missouri, Geological Society of America, Ann. Meeting, Guidebook, pp. 68-71. 1965.
Hendricks, H. E., The geology of the Steelville quadrangle, Missouri. Missouri Geological Survey and Water Resources [Rept.], 2nd Series, v. 36, 88 p. 1954.
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Kiilsgaard, T. H., Heyl, A.V. and Brock,M.R., The Crooked Creek disturbance, southeast Missouri. U.S. Geological Survey Professional Paper 450-E, pp. E14-E19. 1962.
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* pre-1977 K-Ar, Ar-Ar and Rb-Sr ages recalculated using the decay constants of Steiger and Jager (1977) Ages in millions of years (Ma) before present.

** Abbreviations: C - Crystalline Target; C-Ms - Metasedimentary Target; M - Mixed Target (i.e.sedimentary strata overlying crystalline basement); S - sedimentary target (i.e. no crystalline rocks affected by the impact event). From Osinski. G. R., Spray J. G., and Grieve R. A. F. 2007. Impact melting in sedimentary target rocks: A synthesis. In The Sedimentary Record of Meteorite Impacts, Geological Society of America Special Paper. Editors: Evans K. Horton W., King D., Morrow J., and Warme J. Geological Society of America: Boulder, in press.

***From Koeberl,C. Identification of meteoritic components in impactites. 1998, Koeberl, C. The Geochemistry and Cosmochemistry of Impacts. 2007 and PASSC Files. (IAB, IIIAB, IIIB, IIID - Iron Meteorite)