Söderfjärden
| Crater Name | Location | Latitude | Longitude | Diameter (km) | Age (Ma) | Exposed | Drilled | Target Rock** | Bolide Type*** |
|---|---|---|---|---|---|---|---|---|---|
| Söderfjärden | Finland | N 63° 2' | E 21° 35' | 6.6 | ~ 600 | N | Y | C | - |
1. Aerial Image
2. Map by Jarmo Moilanen
References |
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., Pesonen, L.J., Deutsch, A., Bischoff,L.and M.Lehtinen., A geographic information system-based characterization of the Soderfjarden impact structure, western Finland. Meteoritics and Planetary Science, v 33, n 4, p A8. 1998. |
Abels, A., Pesonen, L.J., Deutsch, A., Bischoff, L., Lehtinen,M., The Soderfjarden Impact Structure, W. Finland: Multiple Data Integration with Implications for Morphometry, Cratering Process, and Post-Impact Sedimentary History, LPSC XXIX, Lunar and Planetary Institute, Houston, TX, (CD-ROM). 1998. |
Grieve, R. A. F., The record of impact on Earth: Implications for a major Cretaceous/Tertiary impact event. Geological Society of America, Special Paper 190, pp. 25-37. 1982. |
Gurov, E. P., Gurova, E. P., Impact structures on the Earth's surface (in Russian). Geologicheskii Zhurnal, v. 47, pp. 117-124. 1987. |
Henkel, H., Pesonen, L. J., Impact craters and craterform structures in Fennoscandia. Tectonophysics, v. 216, pp. 31-40. 1992. |
Lauren, L., Lehtovaara, J., Bostrom, R. and Tynni,R., On the geology and the Cambrian sediments of the circular depression at Soderfjarden, western Finland. Geological Survey of Finland Bulletin 297, pp. 1-81. 1978. |
Lehtovaara, J. J., Soderfjarden: a Cambrian impact crater in western Finland. Tectonophysics, v. 216, pp. 157-161. 1992. |
Lehtovaara, J. J., Soderfjarden, Western Finland - A Cambrian filled meteorite crater 100km west fo Lappajarvi (abstract). Pesonen, L.J. and Niemisara, H., eds., Symposium Fennoscandian Impact Structures, p. 29. 1990. |
Lehtovaara, J. J., 40K-40Ar dating of the Soderfjarden crater, Vaasa, western Finland. Geologiska Foreningens i Stockholm Forhandlingar, v. 107, pp. 1-6. 1985. |
Lehtovaara, J. J., Palaeozoic sedimentary rocks in Finland. Annales Academiae Scientiarum Fennicae, series A, III. Geologica-Geophysicia, v. 133. 1982. |
Lehtovaara, J. J., Stratigraphical section through lower Cambrian at Soderfjarden, Vaasa, western Finland. Bulletin of the Geological Society of Finland, v. 54, pp. 1-2, 35-43. 1982. |
Raitala, J., The bedrock of the Vaasa circular structure, western Finland. Deptartment of Astronomy, University of Oulu, Finland (Unpublished Report, 26 p.). 1985. |
| * 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) |