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



Crater Name
Diameter (km)
Age (Ma)*
Target Rock**
Bolide Type***
N 60° 9'
E 20° 6'
~ 1000


Map by Jarmo Moilanen

Abels, A., Bergman, L., Lehtinen, M. and Pesonen,L.J., Structural constraints and interpretations on the formation of the Soderfjarden and Lumparn impact structures, Finland, 4th ESF Workshop, p. 26. 2000.
Abels, A., Mannola, P., Lehtinen, M. Bergman,L.and L.J.Pesonen., New observations of the properties of the Lumparn impact structure, Aland Islands, Southwestern Finland. Meteoritics and Planetary Science, v 33, p A7 - A8. 1998.
Henkel, H., Pesonen, L. J., Impact craters and craterform structures in Fennoscandia. Tectonophysics, v. 216, pp. 31-40. 1992.
Merrill, G. K., Ordovician conodonts from the Åland Islands, Finland. Geologiska Föreningens i Stockholm Förhandlingar, v. 101, pp. 329-341. 1979.
Svensson, N. B., Lumparn - an impact crater on Åland, SW Finland and some effects of shock wave in the surrounding bed rock (abstract). Second International Workshop. Impact Cratering and Evolution of Planet Earth. The Identification and Characterization of Impacts. 1994.
Svensson, N. -B., Lumparn Bay: A meteorite impact crater in the Åland Archipelago, southwest Finland (abstract). Meteoritics, v. 28, pp. 445. 1993.


* 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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