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Keurusselkä

 Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Targed Rock**  Bolid Type***
 Keurusselkä  Finland  N 62° 8'  E 24° 36'  30  < 1800  Y  N  C  -

References

Ferriere, L., Raiskila, S., Osiniski, G.R., Pesonen, L.J. and Lehtinen, M. The Keurusselkä structure (Finland) - impact origin confirmed by universal-stage characterization of planar deformation features in quartz grains. Lunar and Planetary Science XXXXI, (1072.pdf). 2010.
Hietala, S., Moilanen, J. and Kivelantie,B., Keurusselka - A new impact structure in central Finland. Lunar and Planetary Science Conference, XXXV, Abstract 1619. 2004.
Hietala, S., Moilanen, J., Keurusselka - Distribution of Shatter Cones, Lunar and Planetary Science XXXVIII, (1762.pdf). 2007.
Pesonen, L.J., Poutanen, M., Ruotsalainen, H.E., The Keurusselkä impact structure, central Finland - Preliminary geophysical data, Meteoritics and Planetary Science, v. 39, pp. A83, 2004
Raiskila, S., Heikkilä, P., Preeden, U., Elbra, T., & Pesonen, L.Physical properties of vilppula drill cores and petrographic analysis of associated breccias in keurusselkä impact structure, central Finland. Studia Geophysica et Geodaetica, 56:1-xxx. 2012
Raiskila, S., Salminen, J., Elbra, T. and Pesonen, L. J., Rock magnetic and paleomagnetic study of the Keurusselkä impact structure, central Finland. Meteoritics & Planetary Science, 46: 1670–1687. 2011
Schmieder, M., Jourdan, F., Hietala, S., Moilanen, J., Öhman, T., and Buchner, E. 2009. A High-Precision Late Mesoproterozoic 40Ar/39Ar Age for the Keurusselkä Impact Structure (Finland). 40th Annual Lunar and Planetary Science Conference (abstract #1028).
* 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)