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Monturaqui

 Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Targed Rock**  Bolid Type***
 Monturaqui  Chile  S 23° 56'  W 68° 17'  0.46  < 1  Y  N  C  IAB
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1. Photo looking to the north - submitted by Hernan A. Ugalde, Univ. Toronto Physics

2. Photo looking to the south - submitted by Hernan A. Ugalde, Univ. Toronto Physics

3. ***

4. Photograph

5. DEM Image Provided by Dr. Carlos Roberto de Souza Filho

6, 7 & 8. Image Provided by Dr. Carlos Roberto de Souza Filho

References

Bunch, T. E., Cassidy, W. A., Petrographic and electron microprobe study of the Monturaqui impactite. Contributions to Mineralogy and Petrology, v. 36, pp. 95-112. 1972.
Cockell, C. S., Lee, P., The Biology of Impact Craters - a review. Biol. Rev., 77, P. 279 - 310. 2002.
Crosta, A. P., Impact Craters in Brazil: How Far We've Got. 2004.
de Souza Filho, C.R., Bland, P. A., Proven, Probably and Possible Impact Craters in South America Revealed by Aster and SRTM Data and Image Processing Techniques. 67th Annual Meteoritical Society Meeting. 2004.
Echaurren, J. C., Ocampo, A. C. , Rocca, M. C. L., A Mathematic model for the Monturaqui Impact Crater, Chile, South America, 68th Annual Meteoritical Society Meeting; 5004.pdf. 2005.
Gibbons, R. V., Horz, F., Thompson, T.D. and Brownlee,D.E., Metal spherules in Wabar, Monturaqui, and Henbury impactites. Proceedings Lunar and Planatary Science Conference 7th, pp. 863-880. 1976.
Gibbons, R. V., Horz, F. and Morris,R.V., Fractionation of metallic spherules in Wabar, Henbury, and Monturaqui impactites (abstract). EOS, v. 56, pp. 1017. 1975.
Grieve, R. A. F., The record of impact on Earth: Implications for a major Cretaceous/Tertiary impact event. Geological Society of America, Special Paper 190, pp. 25-37. 1982.
Gurov, E. P., Gurova, E. P., Impact structures on the Earth's surface (in Russian). Geologicheskii Zhurnal, v. 47, pp. 117-124. 1987.
Masaitis, V. L., Danilin, A.N., Maschak, M.S., Raykhlin, A.I., Selivanovskaya, T.V. and Shadenkov,Ye.M., The Geology of Astroblemes (in Russian). Leningrad, Nedra, 231 p. 1980.
Parfenova O V., Yakovlev, O. I., Some peculiarities of selective evaporation in target rocks after meteoritic impact. Impact and Explosion Cratering, D. J. Roddy, R. O. Pepin and R. B. Merrill, Pergamon Press, New York, pp. 843-859. 1977.
Sanchez, J., Cassidy, W. A., A previously undescribed meteorite crater in Chile. Journal of Geophysical Research, v. 71, pp. 4891-4895. 1966.
* 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)