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Earth Impact Database Sorted by : | Name | Diameter | Age |

 

Målingen

Crater Name
Location
Latitude
Longitude
Diameter (km)
Age (Ma)*
Exposed
Drilled
Target Rock**
Bolide Type***
Målingen
Sweden
N 62°55'
E 14°33'
1
~ 458
Y
Y
M
-

 

References
Alwmark, C., Alwmark-Holm, S., Ormö, J., and Sturkell, E. 2014. Shocked quartz grains from the Målingen structure, Sweden—Evidence for a twin crater of the Lockne impact structure. Meteoritics & Planetary Science, 49(6), 1076–1082. doi:10.1111/maps.12314
Ormö, J., Sturkell, E., Nõlvak, J., Melero-Asensio, I., Frisk, Å., and Wikström, T. 2014. The geology of the Målingen structure: A probable doublet to the Lockne marine-target impact crater, central Sweden. Meteoritics & Planetary Science, 49(3), 313–327. doi:10.1111/maps.12251

 

* 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)

 

 

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