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Amelia Creek
Crater Name |
Location |
Latitude |
Longitude |
Diameter (km) |
Age (Ma)* |
Exposed |
Drilled |
Target Rock** |
Bolide Type*** |
Amelia Creek |
Australia |
S 20° 55' |
E 134 ° 50' |
~20 |
1640 - 600 |
Y |
N |
M |
- |
References
1. Haines, P. W., Impact Cratering and Distal Ejecta: The Australian Record. Australian Journal of Earth Sciences 52, P. 481 - 507. 2005. 2. MacDonald, F. A., Mitchell, K. , Stewart, J., Amelia Creek: a Proterozoic impact structure in the Davenport Ranges, Northern Territory. Australian Journal of Earth Sciences 52, P. 631 - 640. 2005. 3. MacDonald, F. A., Mitchell, K., Structural and shock Asymmetries at the Amelia Creek Impact Site, 17th Australian Geological Convention p. 239. 2004. 4. MacDonald, F. A., Mitchell, K., New Possible, Probable and Proven Impact Sites in Australia, 17th Australian Geological Convention p. 239. 2004. 5. Macdonald, F. A., Mitchel, K., Amelia Creek, Northern Territory, Australia: A 20 x 12 km oblique impact structure with no central uplift, Workshop on Impact Cratering. 2003.
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* 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 - Metasedimetary 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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