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Cerro do Jarau

 Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Target Rock**  Bolide Type***
 Cerro do Jarau  Brazil S 30° 12'  W 56° 32' 13.5 ≤135  Y  N  M  -
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References

Crósta, A.P., Lourenço, F.S., Priebe, G.H. (2010) Cerro do Jarau, Rio Grande do Sul: A possible new impact structure in southern Brazil, Large Meteorite Impacts and Planetary Evolution IV 465, Roger L Gibson, Wolf Uwe Reimold (ed.), p. 0, Geological Society of America, url, doi:10.1130/2010.2465(12)

Crósta, A.P., Reimold, W.U., and Vasconcelos, M.A.R. (2019) Cerro do Jarau and Sao Miguel do Tapuio: two newly confirmed, large impact structures in Brazil  . 50th Lunar and Planetary Science Conference, Houston, TX. 2019. Abstract#3042

Giacomini, B.B., Leite, E.P.,    Crósta, A.P. (2017) 3D gravimetric investigation of the Cerro do Jarau structure, Rio Grande do Sul, Brazil, Meteoritics & Planetary Science 52(4), url, doi:10.1111/maps.12813 

Philipp, R.P.,  Rolim, S.B.A.,     Sommer, C.A.,    de Souza Filho, C.R.,  Lisboa, N.A. (2010) The impact structure of the Cerro do Jarau, Quaraí, RS, southern Brazil [in Portuguese], Revista Brasileira de Geociências 40(4), p. 468-483 

Reimold, W.U., Crósta, A.P., Hasch, M., Kowitz, A., Hauser, N., Sanchez, J.P., Simões, L.S.A., de Oliveira, G.J., Zaag, P.T. (2019) Shock deformation confirms the impact origin for the Cerro do Jarau, Rio Grande do Sul, Brazil, structure, Meteoritics & Planetary Science 54(10), p. 2384-2397, University of Arkansas, doi:10.1111/maps.13233  

 

 

 
* 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)