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Earth Impact Database Sorted by : | Age | Diameter | Name |
Ritland
Crater Name |
Location |
Latitude |
Longitude |
Diameter (km) |
Age (Ma)* |
|
Drilled |
Target Rock** |
Bolide Type*** |
Ritland |
Norway |
N 59° 14' |
E 6° 26' |
2.7 |
520 ± 20 |
Y |
N |
C |
- |
View of the Ritland impact structure looking towards the south. Dashed line indicate approximate extent of the structure (Photo provided by Knut Vindfallet).
| References |
| Azad, A. S., Tomczyk, M., Dypvik, H., Kalleson, E. and Riis, F. 2011. Syn-impact and early-post impact sedimentation in the Ritland impact structure, Western Norway. Geological Society of Norway, Winter Meeting, Stavanger, Norway (abstract). |
| Beyer, C. 2011. Palaeomagnetic investigation of the Ritland structure. Geological Society of Norway, Winter Meeting, Stavanger, Norway (abstract). |
| Kalleson, E., Dypvik, H. and Riis, F. 2010. The Ritland impact structure, Western Norway. 41th Lunar and Planetary Science Conference, Houston, Texas. (abstract #1326). |
| Kalleson, E., Riis, F., Setså, R., Azad, A. and Dypvik, H. 2011. The Ritland impact structure – shock deformation in minerals and outcrops. Geological Society of Norway, Winter Meeting, Stavanger, Norway (abstract). |
| Riis, F., Kalleson, E., Dypvik, H., Krøgli, S.-O. and Nilsen, O. 2011. The Ritland impact structure, southwestern Norway. Meteoritics and Planetary Science, v. 46, pp. 748-761. |
| Riis, F., Kalleson, E., Setså, R., Azad, A. and Dypvik, H. 2011.The Ritland impact structure – new evidence on age, environment and mechanisms of impact. Geological Society of Norway, Winter Meeting, Stavanger, Norway (abstract). |
* 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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