by: Charles O’Dale
Large Meteorite Impacts and Planetary Evolution II: The major portion of the data I quote in my documentation of impact structures was gleaned from this publication.
“I would rather have questions that can’t be answered than answers that can’t be questioned.” Richard Feynman
CRATERS SORTED BY;
- Alphabetically listed;
- Confirmed; an impact site with documented shock features and/or meteoritic material and/or observed fall.
- Probable; structural, geological and geophysical studies established reasonable evidence, possibly with unconfirmed reports of shock features in abstracts, but the definite shock features and/or meteoritic material is not well documented.
- Proposed; some structural, geological and/or geophysical evidence exists but the impact origin is still highly uncertain for the lack of data.
- Improbable; observations of the structure and/or geological context suggest a non-impact origin but alternative interpretation has not been well established.
- Non-Impact; a non-impact origin has been well documented.
- REFERENCES1 Dence, Michael R. Structural evidence from shock metamorphism in simple and complex impact craters: Linking observations to theory. Meteoritics & Planetary Science 39. Nr 2, 267-286 (2004).2 Grieve R.A.F., Impact structures in Canada, Geological Association of Canada, 2006.3 Spray J.G. et al. A marine magnetic study of the Ile Rouleau impact structure, Lake Mistassini, Quebec Canada. Meteoritics, 70th Annual Meeting (2007).4 Eugene M. Shoemaker, Bryan J. Kriens, Ken E. Herkenhop, GEOLOGY OF THE UPHEAVAL DOME IMPACT STRUCTURE, SOUTHEAST UTAH. Journal of Geophysical Research–Planets, April 16, 1998.5 Grieve R.A.F. and Head J.W. The Manicouagan impact structure: An analysis of its original dimensions and form. Journal of Geophysical Research 88:A807-A818 (1983).6 French, B.M. Traces of Catastrophe, Lunar and Planetary Institute, 19987 Cordua, W. S., “The Rock Elm Structure, Pierce County, Wisconsin, a possible cryptoexplosion structure”, Geology, vol. 13, p. 372-374. 1985.8Donofrio, Richard R., IMPACT CRATERS: IMPLICATIONS FOR BASEMENT HYDROCARBON PRODUCTION. Journal of Petroleum Geology, 3, 3, pp. 279-302, 1981.
“We, all of us, are what happens when a primordial mixture of hydrogen and helium evolves for so long that it begins to ask where it came from.” Jill Tarter CANADIAN CRATERS