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Earth Impact Database Sorted by : | Age | Diameter | Name |
Keurusselkä
Crater Name |
Location |
Latitude |
Longitude |
Diameter (km) |
Age (Ma)* |
Exposed |
Drilled |
Target Rock** |
Bolide 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. |
| Ferriere, L., Raiskila, S., Osiniski, G.R., Pesonen, L.J. and Lehtinen, M. The Keurusselkä structure, Finland - Impact origin confirmed by characterization of planar deformation features in quartz grains. Meteoritics and Planetary Science, doi: 10.1111/j.1945-5100.2010.01032.x. 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. |
| 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 |
* 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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