manicouagan

Pantasma

 Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Target Rock**  Bolide Type***
 Pantasma  Nicaragua  S 13° 13'  W 85° 57'  14 0.815±0.011  Y N C  -
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References
Rochette, P., Alac¸, R., Beck, P., Brocard, G., Cavosie, A.J., Debaille, V., Devouard, B., Jourdan, F., Mougel, B., Moustard, F., and Moynier, F. (2019) Pantasma: evidence for a Pleistocene circa 14 km diameter impact crater in Nicaragua. Meteorit Planet Sci 54:880–901.
* 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)