Impact Sites - References (A-G)

Steven Dutch, Professor Emeritus, Natural and Applied Sciences, Universityof Wisconsin - Green Bay

Notes

In organizing the list here, I have followed the following principles:

Where do I find this stuff? Public libraries almost never will have any of thesereferences. Most colleges and universities that have a geology program will carry Geologyand other common publications. For the more obscure publications you may have to try avery large university or resort to inter-library loan, or in extreme cases write to theauthors or publishers. Welcome to my world.

Unless meteoritic fragments have been found at a site, almost every large impact sitehas been claimed to be of terrestrial rather than extraterrestrial origin. Even meteoritesaren't always enough; for years some geologists argued that Meteor Crater was a volcaniccrater and the meteorites nearby were just a coincidence. See the references for UpheavalDome for both sides of an ongoing controversy. Some early references date from before therecognition of certain sites as impact craters, and though the geology may be describedaccurately, it may not always be interpreted in terms of impact.

No two lists of sites are exactly alike. Meteorite fragments are conclusive but foundonly at small, recent craters. Shock metamorphism, especially high-pressure minerals likediamond or coesite, and shatter cones are widely regarded as conclusive. Structuraldisturbance of the rocks, circularity, and so on are suggestive but not conclusive. Sitesreported as impact sites in reputable current scientific literature are included, but somemight be controversial and could eventually turn out not to be of impact origin (again,see Upheaval Dome). Older lists should be taken with a grain of salt since they werecompiled when our understanding of impact was a lot less and can include sites no longerconsidered to be impact sites.

Foreign names are often rendered in different ways and a few entries have differentspellings that may or may not refer to two different sites.

Acraman South Australia, Australia
Lat. -32.02; Long: 135.45; Diam. (km): 160; Age (My): 570 +/-
Williams, G. E.; Schmidt, P. W.; Boyd, D. M. ; Magnetic signature and morphology of the Acraman impact structure, South Australia in: Glikson, Andrew Y. (editor); Thematic issue; Australian impact structures, Australian Geological Survey Organization, Canberra, A.C.T., Australia; AGSO Journal of Australian Geology and Geophysics, v. 16 n. 4, p. 431-442, 1996
Williams, George E.; Acraman; a major impact structure from the Neoproterozoic of Australia in: Dressler, B. O.; Grieve, R. A. F.; Sharpton, V. L. (editors), Large meteorite impacts and planetary evolution, Geological Society of America Special Paper 293, p. 209- 224, 1994
Ames Oklahoma, USA
Lat. 36.25; Long: -98.17; Diam. (km): 16; Age (My): 470 +/- 30
Carpenter, Bruce N.; Carlson, Rick ; The Ames impact crater; Oklahoma Geology Notes, v. 52n. 6, p. 208-223, 1992
Amguid Algeria
Lat. 26.08; Long: 4.38; Diam. (km): 0.45 Age (My): 0.1 +/-
Lefranc, Jean Philippe ; Reconnaissance du cratere meteorique d'Amguid (Mouydir, Sahara central) (Preliminary survey of the Amguid meteor crater, Mouydir, central Sahara); Comptes Rendus Hebdomadaires des Seances de l'Academie des Sciences, Serie D: Sciences Naturelles, v. 268n. 6, p. 900-902, 1969
Lambert, Philippe; McHone, John F., Jr.; Dietz, Robert S.; Houfani, Messaoud ; Impact and impact-like structures in Algeria; Part I, Four bowl- shaped depressions; Meteoritics, v. 15n. 2, p. 157-179, 1980
Aouelloul Mauritania
Lat. 20.25; Long: -12.68; Diam. (km): 0.39; Age (My): 3.1 +/- 0.3
Koeberl, Christian; Reimold, Wolf Uwe; Shirey, Steven B. ; The Aouelloul Crater, Mauritania; on the problem of confirming the impact origin of a small crater; Meteoritics & Planetary Science, v. 33n. 3, p. 513-517; 1998
Araguainha Dome Mato Grosso, Brazil
Lat. -16.77; Long: -52.98; Diam. (km): 40; Age (My): 249 +/- 19
Engelhardt, W. V.; Matthai, S. K.; Walzebuck, J.; Araguainha impact crater, Brazil. I. The interior part of the uplift.; Meteoritics., Volume 27, Number 4, p.442-457, September 1992
von Engelhardt, Wolf; Matthai, Stephen K.; Walzebuck, Johannes ; Araguainha impact crater, Brazil; I, The interior part of the uplift; Meteoritics, v. 27n. 4, p. 442-457, 1992
Arganaty Kazakhstan
Zeylik, B. S. ; The Arganaty impact crater and associated ring structures, southern Kazakhstan; Transactions (Doklady) of the U.S.S.R. Academy of Sciences: Earth Science Sections, v. 297, p. 81-84, 1988
Avak Alaska, USA
Lat. 71.25; Long: -156.63; Diam. (km): 12; Age (My): 100 +/- 5
Kirschner, C. E.; Grantz, Arthur; Mullen, M. W. ; Impact origin of the Avak Structure, Arctic Alaska, and genesis of the Barrow gas fields; American Association of Petroleum Geologists Bulletin, v. 76n. 5, p. 651-679, 1992
Azuara Spain
Lat. 41.17; Long: -0.92; Diam. (km): 30; Age (My): 130 +/-
Ernstson, Kord; Fiebag, Johannes ; The Azuara impact structure (Spain); new insights from geophysical and geological investigations; Geologische RunDschau, v. 81n. 2, p. 403-427, 1992
Ernstson, K.; Hammann, W.; Fiebag, J.; Graup, G. ; Evidence of an impact origin for the Azuara structure (Spain); Earth and Planetary Science Letters, v. 74n. 4, p. 361-370, 1985
B.P. Structure Libya
Lat. 25.32; Long: 24.33; Diam. (km): 2.8 Age (My): 120 +/-
Barringer Arizona, USA
Lat. 35.03; Long: -111.02; Diam. (km):1.186; Age (My):0.049 +/-
Bjork, R. L., 1961; Analysis of the formation of Meteor Crater, JGR v. 66, p. 3379-3387.
Drake, Ellen T. ;The Coon Butte crater controversy in: Drake, Ellen T.; Jordan, William M. (editors); Geologists and ideas; a history of North American geology, Centennial special volume Geological Society of America, Boulder, CO, United States; v. 1, p. 65-78, 1985
Beaverhead Montana, USA
Lat. 44.60; Long: -113.00; Diam. (km): 60 Age (My): 600 +/-
Hargraves, R. B.; Cullicott, C. E.; Deffeyes, K. S.; Hougen, S.; Christiansen, P. P.; Fiske, P. S. ; Shatter cones and shocked rocks in southwestern Montana; the Beaverhead impact structure; Geology (Boulder), v. 18n. 9, p. 832-834, 1990
Bedout, Continental Shelf, Australia
Becker L.; Harrison T.M.; Nicholson C., and others, 2004; Bedout: A possible end-Permian impact crater offshore of northwestern Australia  Science 304, no.5676 (04 Jun 2004) p. 1469-1476
Bee Bluff Texas, USA
Lat. 29.03; Long: -99.85; Diam. (km): 2.4 Age (My): 40 +/-
Beyenchime-Salaat Russia
Lat. 71.83; Long: 123.50; Diam. (km): 8 Age (My): 65 +/-
Mikhaylov, M. V.; Shurygin, A. G.; Khar'yuzov, L. S. ; The Beyenchime-Salaata meteorite crater; Transactions (Doklady) of the U.S.S.R. Academy of Sciences: Earth Science Sections, v. 245n. 1-6, p. 76-78, 1979
Bjorko Sweden
Floden, T.; Soderberg, P.; Wickman, F. E. ; Bjorko, a possible middle Proterozoic impact structure west of Stockholm, Sweden; Geological Society of Sweden, Stockholm, Sweden; Geologiska Foereningen i Stockholm Foerhandlingar, v. 115 Part 1, p. 25-38, 1993
Bigach Kazakhstan
Lat. 48.50; Long: 82.00; Diam. (km): 7; Age (My): 6 +/- 3
Kiselev, N. P.; Korotushenko, Yu. G.; Astroblema Bigach v Vostochnom Kazakhstane (The Bigach astrobleme in Eastern Kazakhstan), Akademiya Nauk SSSR, Moscow, USSR, Meteoritika, v. 45, p. 119-121, 1986
Kiselev, N. P.; Korotushenko, Yu. G.; Astroblema Bigach v Vostochnom Kazakhstane (The Bigach astrobleme in Eastern Kazakhstan), Akademiya Nauk SSSR, Moscow, USSR, Meteoritika, v. 45, p. 119-121, 1986
Boltysh Ukraine
Lat. 48.75; Long: 32.17; Diam. (km): 25 Age (My): 88 +/- 3
Yurk, Y. Y., Yeremenko, G. K., and Polkanov, Y. A., 1975; The Boltysh depression, a fossil meteorite crater, International Geology Review, v. 18, p. 196-202.
Grieve, R. A. F.; Reny, G.; Gurov, E. P.; Ryabenko, V. A. ; The melt rocks of the Boltysch impact crater, Ukraine, USSR; Contributions to Mineralogy and Petrology, v. 96n. 1, p. 56-62, 1987
Masaytis, V. L.; Danilin, A. N.; Geologiya astroblem SSSR; Mezozoyskiye astroblemy; Boltyshskaya astroblema (The geology of astroblemes in the USSR; Mesozoic astroblemes; the Boltyshskaya Astrobleme) in: Masaytis, V. L.; Danilin, A. N.; Mashchak, M. S.; Raykhlin, A. I.; Selivanovskaya, T. V.; Shadenkov, Ye. M. (editors), Geologiya astroblem (The geology of astroblemes), Izdatel'stvo Nedra, Leningrad, USSR, 1980
Bosumtwi Ghana
Lat. 6.53; Long: -1.42; Diam. (km): 10.5 Age (My): 1.3 +/- 0.2
Jones, W. B., 1981; The Lake Bosumtwe impact crater, Ghana, GSAB v. 92, no. 6, p. 342-349
Boxhole Northern Territory, Australia
Lat. -22.62; Long: 135.20; Diam. (km): 0.17; Age (My): 0.03 +/-
Madigan, C. T. ; The Boxhole Crater and the Huckitta Meteorite; (central Australia) in McCall, G. J. H. (editor); Meteorite craters, Dowden, Hutchinson and Ross, Stroudsburg, Pa., United States; p. 47-51, 1977
Brent Ontario, Canada
Lat. 46.08; Long: -78.48; Diam. (km): 3.8; Age (My): 450 +/- 30
Hartung, Jack B.; Dence, Michael R.; Adams, John A. S. ; Potassium-argon dating of shock-metamorphosed rocks from the Brent impact crater, Ontario, Canada; Journal of Geophysical Research, v. 76n. 23, p. 5437-5448; 1971
Millman, P. M., Liberty, B. A., Clark, J. G., Willmore, P. L., and Innes, M. J. S., 1960; The Brent Crater, PDO, v. 24, p. 1-43.
Calvin 28 Michigan, USA
Milstein, Randall L. ; The Calvin 28 cryptoexplosive disturbance, Cass County, Michigan, in: Biggs, Donald L. (editor);North-central section of the Geological Society of America Centennial field guide, Geol. Soc. Am., Boulder, CO, United States; v. 3, p. 315-320, 1987
Milstein, Randall L. ; The Calvin 28 Structure; evidence for impact origin; Canadian Journal of Earth Sciences, v. 25n. 9, p. 1524-1530, 1988
Campo Del Cielo Argentina
Lat. -27.63; Long: -61.70; Diam. (km): 0.05; Age (My): 0 +/-
William A. Cassidy, 1968, Meteorite impact structures at Campo del Cielo, Argentina, in B. French and N. Short, eds., Shock Metamorphism of Natural Materials, Mono Books, Baltimore, p. 117-128. Cassidy, W. A., Villar, L. M., Bunch, T. E., Kohman, T. P., and Milton, D. J., 1965; Meteorites and craters of Campo del Cielo, Argentina, Science, v. 149, 1044-1064.
Carswell Saskatchewan, Canada
Lat. 58.45; Long: -109.50; Diam. (km): 39; Age (My): 115 +/- 10
Currie, K. L. ; Shock metamorphism in the Carswell circular structure, Saskatchewan, Canada; Nature (London), v. 213n. 5071, p. 56-57; 1967
Charlevoix Quebec, Canada
Lat. 47.53; Long: -70.30; Diam. (km): 54 Age (My): 357 +/- 15
Robertson, P. B. ; Zones of shock metamorphism at the Charlevoix impact structure, Quebec; Geological Society of America Bulletin, v. 86n. 12, p. 1630-1638; 1975
Rondot, Jehan; Nouvel impact meteoritique fossile?; la structure semi-circulaire de Charlevoix, Canadian Journal of Earth Science; with English abs., v. 5n. 5, p. 1305-1317, 1968
Chesapeake Bay Maryland, USA
Koeberl, Christian; Poag, C. Wylie; Reimold, Wolf Uwe; Brandt, Dion ; Impact origin of the Chesapeake Bay structure and the source of the North American tektites; Science, v. 271n. 5253, p. 1263-1266; 1996
Poag, C. Wylie; Powars, David S.; Poppe, Lawrence J.; Mixon, Robert B. ; Meteoroid mayhem in Ole Virginny; source of the North American tektite strewn field; Geology (Boulder), v. 22n. 8, p. 691-694, 1994
ChicxulubYucatan, Mexico
Lat. 21.33; Long: -89.50; Diam. (km): 300 Age (My):64.98 +/- 0.05
Kring, David A. ; The dimensions of the Chicxulub impact crater and impact melt sheet; Journal of Geophysical Research, E, Planets, v. 100n. 8, p. 16,979-19,986; 1995
Morgan, J; Warner, M; Brittan, J; Buffler, R; Camargo, A; Christeson, G; Denton, P; Hildebrand, A; Hobbs, R; Macintyre, H; Mackenzie, G; Maguire, P; Marin, L; Nakamura, Y; Pilkington, M; Sharpton, V; Snyder, D; Suarez, G; Trejo, A; Size and morphology of the Chicxulub impact crater; Nature, Volume 390, Number 6659, p.pp. 472 1997
Koeberl, Christian; Chicxulub Crater, Yucatan: Tektites, impact glasses, and the geochemistry of target rocks and breccias.; Geology., Volume 21, Number 3, p.211, March 1993
Chiyli Kazakhstan
Lat. 49.17; Long: 57.85; Diam. (km): 5.5; Age (My): 46 +/- 7
Clearwater Lake East Quebec, Canada
Lat. 56.08; Long: -74.12; Diam. (km): 22; Age (My): 290 +/- 20
Ehmann, W. D.; Morgan, J. W. ; Twin terrestrial impact craters; Nature (London), v. 225n. 5229, p. 255; 1970
Reimold, W. U.; Grieve, R. A. F.; Palme, H.; Rb-Sr dating of the impact melt from East Clearwater, Quebec, Contributions to Mineralogy and Petrology, v. 76n. 1, p. 73-76, 1981
Clearwater Lake West Quebec, Canada
Lat. 56.22; Long: -74.50; Diam. (km): 32; Age (My): 290 +/- 20
Ehmann, W. D.; Morgan, J. W. ; Twin terrestrial impact craters; Nature (London), v. 225n. 5229, p. 255; 1970
Simonds, C. H.; Phinney, W. C.; McGee, P. E.; Cochran, A.; West Clearwater, Quebec impact structure; Part I, Field geology, structure, and bulk chemistry in: Merrill, R. B. (editor); Lunar and planetary surfaces, Pergamon, New York, NY, United States, Proceedings of the Lunar and Planetary Science Conference, n. 9 Vol. 2, p. 2633-2658, 1978
Phinney, W. C.; Simonds, C. H.; Cochran, A.; McGee, P. E.; West Clearwater, Quebec impact structure; Part II, Petrology in: Merrill, R. B. (editor); Lunar and planetary surfaces, Pergamon, New York, NY, United States, Proceedings of the Lunar and Planetary Science Conference, n. 9 Vol. 2, p. 2659-2693, 1978
Connolly Basin Western Australia, Australia
Lat. -23.53; Long: 124.75; Diam. (km): 9; Age (My): 60 +/-
Shoemaker, Eugene M.; Shoemaker, Carolyn S. ; Geology of the Connolly Basin impact structure, Western Australia Reports of Planetary Geology and Geophysics Program, 1988, National Aeronautics and Space Administration (NASA) Technical Memorandum, , p. 586-587, 1989
Crooked Creek Missouri, USA
Lat. 37.83; Long: -91.38 Diam. (km): 7; Age (My): 320 +/- 80
Hendriks, H. E. ; The Crooked Creek structure; in: Cryptoexplosive structures in Missouri--geol. Soc. America, Ann. Mtg. 1965, Guidebook; Missouri Department of Natural Resources, Division of Geology and Land Survey, Geological Survey, Rolla, MO, United States; Report of Investigations - Missouri Geological Survey and Water Resources, , p. 68-72; 1965 T. H. Kilsgaard, A. V. Heyl and M. R. Brock, 1962, The Crooked Creek disturbance, southeast Missouri, United States Geological Survey Professional Paper 424-E, p. E14-E19.
Dalgaranga Western Australia, Australia
Lat. -27.75; Long: 117.08; Diam. (km):0.021; Age (My): 0.03 +/-
Nininger, H. H.; Huss, Glenn I. ; The unique meteorite crater at Dalgaranga, Western Australia in: Harvey Harlow Nininger, Published Papers, Biology and Meteoritics, Publication - Arizona State University. Center for Meteorite Studies, v. 9, p. 673-693, 1971
Decaturville Missouri, USA
Lat. 37.90; Long: -92.72 Diam. (km): 6; Age (My): 300 +/-
Offield, T. W.; Pohn, H. A.; Deformation at the Decaturville impact structure, Missouri, in: Roddy, D. J.; Pepin, R. O.; Merrill, R. B. (editors), Impact and explosion cratering; planetary and terrestrial implications; Proceedings of the Symposium on planetary cratering mechanics, Pergamon Press, New York, N.Y., United States, p. 321-341, 1979
Deep Bay Saskatchewan, Canada
Lat. 56.40; Long: -102.98; Diam. (km): 13; Age (My): 100 +/- 50
Innes, M. J. S., Pearson, W. J. and Geuer, J. W., 1964; The Deep Bay Crater, PDO, v. 31, p. 19-52.
Dellen Sweden
Lat. 61.92; Long: 16.65; Diam. (km): 15; Age (My): 110 +/- 2.7
Svensson, Nils Bertil ; The Dellen lakes, a probable meteorite impact in central Sweden; Geological Society of Sweden, Stockholm, Sweden; Geologiska Foereningen i Stockholm Foerhandlingar, v. 90 Part 2, n. 533, p. 314-316; 1968
Mueller, Norbert; Hartung, Jack B.; Jessberger, Elmar K.; Reimold, Wolf Uwe; Ar- 40 Ar-39 ages of Dellen, Janisjarvi, and Saaksjarvi impact craters; Meteoritics, v. 25n. 1, p. 1-10, 1990
Des Plaines Illinois, USA
Lat. 42.05; Long: -87.87 Diam. (km): 8; Age (My): 280 +/-
McHone, J. F.; Sargent, M. L.; Nelson, W. John ; Shatter cones in Illinois; evidence for meteoritic impacts at Glasford and Des Plaines, National Aeronautics and Space Administration (NASA) Technical Memorandum, v. 89810, p. 438, 1987
Dobele Latvia
Lat. 56.58; Long: 23.25; Diam. (km): 4.5; Age (My): 300 +/- 35
Dumas Saskatchewan, Canada
Sawatzky, H. B. ; Two probable late Cretaceous astroblemes in western Canada; Eagle Butte, Alberta and Dumas, Saskatchewan; Geophysics, v. 41n. 6, p. 1261-1271, 1976
Eagle Butte Alberta, Canada
Lat. 49.70; Long: -110.58 Diam. (km): 19; Age (My): 65 +/-
Sawatzky, H. B. ; Two probable late Cretaceous astroblemes in western Canada; Eagle Butte, Alberta and Dumas, Saskatchewan; Geophysics, v. 41n. 6, p. 1261-1271, 1976
El Gygytgyn Russia
Lat. 67.50; Long: 172.08; Diam. (km): 18; Age (My): 3.5 +/- 0.5
Dietz, R. S.; McHone, J. F.; El'gygytgyn; probably world's largest meteorite crater; Geology (Boulder), v. 4n. 7, p. 391-392; 1976
Eltanin Bellingshausen Sea
Lat. -57.50; Long: -090  Diam. (km): unknown (known from debris); Age (My): 2.15 +/- 0.07
R. Gersonde, F. T. Kyte, U. Bleil, B Diekmann, J. A. Flores, K. Gohl, G. Grahl, R. Hagen, G. Kuhn, F. J. Sierro, D. Voelker, A Abelmann & J. A. Bostwick, 1997; Geological record and reconstruction of the late Pliocene impact of the Eltanin asteroid in the Southern Ocean. Nature 390, 357 - 363 (27 November 1997)
Flynn Creek Tennessee, USA
Lat. 36.28; Long: -85.67 Diam. (km): 3.55; Age (My): 360 +/- 20
Roddy, David J.; The Flynn Creek crater, Tennessee; in: French, Bevan; Short, Nicholas M. (editors); Shock metamorphism of natural materials; p. 291-322; 1968
Gardnos Norway
Lat. 60.65; Long: 9.00; Diam. (km): 5; Age (My): 500 +/- 10
French, Bevan M.; Koeberl, Christian; Gilmour, Iain; Shirey, Steven B.; Dons, Johannes A.; Naterstad, Johan; The Gardnos impact structure, Norway; petrology and geochemistry of target rocks and impactites; Geochimica et Cosmochimica Acta, v. 61n. 4, p. 873-904, 1995
Glasford Illinois, USA
Lat. 40.60; Long: -89.78; Diam. (km): 4; Age (My): 430 +/-
McHone, J. F.; Sargent, M. L.; Nelson, W. John ; Shatter cones in Illinois; evidence for meteoritic impacts at Glasford and Des Plaines, National Aeronautics and Space Administration (NASA) Technical Memorandum, v. 89810, p. 438, 1987
T. C. Buschbach and R. Ryan, 1962; Glasford (Illinois) cryptoexplosion structure, GSA Special Paper 73, p. 126.
T. C. Buschbach and R. Ryan, 1963; Ordovician Explosion Structure at Glasford, Illinois, American Association of Petroleum Geologists Bulletin, v. 47, no. 12, p. 2015-2022.
Glover Bluff Wisconsin, USA
Lat. 43.97; Long: -89.53 Diam. (km): 3; Age (My): 500 +/-
Read, W. F. ; Ejecta from the Glover Bluff Crater, or other craters of the same age, National Aeronautics and Space Administration (NASA) Technical Memorandum, v. 88383, p. 476, 1986
Read, W. F. ; Shatter cones at Glover Bluff, Wisconsin; Meteoritics, v. 18n. 3, p. 241-243, 1983
Ekern, George L.; Thwaites, Frederik Turville ; The Glover Bluff structure, a disturbed area in the Paleozoics of Wisconsin; Transactions of the Wisconsin Academy of Sciences, Arts and Letters, v. 25, p. 89-97, 1930
Goat Paddock Western Australia, Australia
Lat. -18.33; Long: 126.67; Diam. (km): 5.1; Age (My): 50 +/-
Milton, Daniel J.; Fudali, Robert F.; Ferguson, John; Jaques, Lynton; Goat Paddock, Western Australia; an impact crater near the simple-complex transition in: Holt, Henry E.; Kosters, Elisabeth C. (compilers), Reports of Planetary Geology Program, 1980, National Aeronautics and Space Administration (NASA), Technical Memorandum, n. 82385, p. 125-126
Harms, J. E.; Milton, D. J.; Ferguson, John; Gilbert, D. J.; Harris, W. K.; Goleby, Bruce; Goat Paddock cryptoexplosion crater, Western Australia, Nature (London), v. 286n. 5774, p. 704-706, 1980
GoyderNorthern Territory, Australia
Haines, Peter W.; Goyder impact structure, Arnhem Land, Northern Territory in: Glikson, Andrew Y. (editor); Thematic issue; Australian impact structures, Australian Geological Survey Organization, Canberra, A.C.T., Australia; AGSO Journal of Australian Geology and Geophysics, v. 16n. 4, p. 561-566, 1996
Gosses Bluff Northern Territory, Australia
Lat. -23.83; Long: 132.32; Diam. (km): 22; Age (My):142.5 +/- 0.5
Milton, D. J.; Barlow, B. C.; Brett, Robin; Brown, A. Y.; Glikson, A. Y.; Manwaring, E. A.; Moss, F. J.; Sedmik, E. C. E.; Van Son, J.; Young, G. A. ; Gosses Bluff Impact Structure, Australia; Science, v. 175n. 4027, p. 1199-1207; 1972
Gow LakeSaskatchewan, Canada
Lat. 56.45; Long: -104.48; Diam. (km): 4 Age (My): 250 +/-
Thomas, M. D. and Innes, M. J. S., 1977; The Gow Lake impact structure, northern Saskatchewan, CJES v. 14, p. 1788-1795.
Gusev Russia
Lat. 48.35; Long: 40.23; Diam. (km): 3.5; Age (My): 65 +/-
Movshovich, Ye. V.; Milyanskiy, A. Ye. ; Morphology and internal structure of the Kamensk and Gusev astroblemes; International Geology Review, v. 33, p. 636-662; 1991

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Created 14 April 1999, Last Update 11 January 2020