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Gardnos

 Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Targed Rock**  Bolid Type***
 Gardnos  Norway  N 60° 39'  E 9° 0'  5  500 ± 10  Y  N  C  Chondrite

Geology map

References

Abels A., Plado J., Pesonen L.J., Lehtinen M., The impact crater record of Fennoscandia - A close look at the database, 2002.
Andersen, T., Burke, E. A. J., Methane inclusions in shocked quartz from the Gardnos impact breccia, South Norway. Eur. J. Mineral., v. 8, pp. 927-936. 1996.
Dons, J. A., Naterstad, J., The Gardnos impact structure, Norway (abstract). Meteoritics, 55th Annual Meeting, Meteoritical Society, Copenhagen, v. 215. 1992.
French, B. M., Koeberl, C., Gilmour, I., Shirey, S.B., Dons, J.A. and Naterstad,J., Petrology and geochemistry of target rocks and breccias from the Gardnos impact structure, Norway (abstract). Lunar and Planetary Science XXVI, pp. 423-424. 1995.
French, B. M., Koeberl, C., Gilmour, I., Shirey, S.B., Dons, J.A. and Naterstad,J., The Gardnos impact structure, Norway: Petrology and geochemistry of target rocks and impactites. Geochimica et Cosmochimica Acta, v. 61, pp. 873-904. 1997.
Gilmour, I., French, B.M., Franchi, I.A., Abbott, J.I., Hough, R.M., Newton, J., Koeberl,C., Geochemistry of carbonaceous impactites from the Gardnos impact structure, Norway, Geochimica Acta, Vol 67. No. 20. P 3889 - 3903. 2003.
Grier, J. A., Swindle, T.D., Kring, D.A. and Melosh,H.J., Investigation of the Gardnos impact structure: Argon-40/Argon-39 results (abstract). Meteoritics, v. 30, pp. 513-514. 1995.
Grier, J. A., Swindle, T.D., Kring,D.A.and H.J.Melosh., Argon-40/argon-39 analyses of samples from the Gardnos impact structure, Norway, Meteoritics and Planetary Science, v 34 p 803-807. 1999.
Henkel, H., Pesonen, L. J., Impact craters and craterform structures in Fennoscandia. Tectonophysics, v. 216, pp. 31-40. 1992.
Moynier, F., Koeberl, C, Quitte, G. and Telouk, P., A tungsten isotope approach to search for meteorite componenets in terrestrial impact rocks, Earth and Planetary Science Letters, v.286, pp.35-40. 2009.
Naterstad, J., Dons, J. A., The Gardnos impact structure, Hallingdal, Norway (abstract). "Impact Cratering and Evolution of Planet Earth", First International Workshop, Nordlingen, Germany, April 28-May 2. 1993.
Pesonen L.J., Henkel H., The record of Fennoscandian impact craters, 1992.
Pesonen, L. J., Marcos, N. and Pipping,F., Palaeomagnetism of the Lappajarvi impact structure, western Finland. Tectonophysics, 216, pp. 123-142. 1992.
Vishnevsky, S. A., Raitala, J., Native iron, wustite and magnetite in impactites of Janisjarvi and Gardnos craters (the Baltic Shield), 66th Annual Meteoritical Society Meeting. 2003.
Wolbach, W. S., French, B. M., Widicus., Carbon- Bearing Impactites from the Gardnos Impact Structure, Norway: No Evidence for Soot, LPSC XXX, Lunar and Planetary Institute, Houston, TX, Abstr. 1043 (CD-ROM). 1999.
Robertson P. B., Grieve R. A. F., Impact structures in Canada, 1975.
* 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)