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

 

Karikkoselkä

Crater Name
Location
Latitude
Longitude
Diameter (km)
Age (Ma)*
Exposed
Drilled
Target Rock**
Bolide Type***
Karikkoselkä
Finland
N 62° 13'
E 25° 15'
1.5
~230
Y
-
C
-

 

Ground photo
View from the south of the structure direction N to the center., Photo Sept.2001
Submitted by Harald Stehlik

Photograph - North shore of lake
by Jarmo Moilanen

Map by Jarmo Moilanen

References
Lehtinen, M., Pesonen, L.J., Puranen, R. and Deutsch,A., Karikkoselkä - a new impact structure in Finland (abstract). Lunar and Planetary Science, v. XXVII, pp. 739-740. 1996.
Pesonen, L. J., Elo, S., Puranen, R., Jokinen, T., Lehtinen, M. , Kivekäs, L. and Suppala,I., The Karikkoselkä impact structure, central Finland: New geophysical and petrographic results (abstract). Large Meteorite Impacts and Planetary Evolution,. 1997.

 

* 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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