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



Crater Name
Diameter (km)
Age (Ma)*
Target Rock**
Bolide Type***
Northern Territory
S 16° 40'
E 136° 47'
> 545


Vertical aerial photograph showing the circular plateau of Neoproterozoic
sandstone which overlies the structure. Deformed Mesoproterozoic rocks,
interpreted as relics of the rim, outcrop around the edge of the plateau.
Image Courtesy Peter Haines

Total magnetic intensity image. The prominent circular feature, which
lead to the discovery of Foelsche, relates to impact disruption of
previously flat-lying magnetic mafic igneous rocks. Image Courtesy Peter Haines

DEM image Provided by Dr. Carlos Roberto de Souza Filho

Image Provided by Dr. Carlos Roberto de Souza Filho

Image Provided by Dr. Carlos Roberto de Souza Filho


Haines, P. W., Impact Cratering and Distal Ejecta: The Australian Record. Australian Journal of Earth Sciences 52, P. 481 - 507. 2005.
Haines, P. W., Rawlings, D. J., The Foelsche structure, Northern Territory, Australia: An impact crater of probable Neoproterozoic age, Meteorics & Planetary Science, v. 37, p. 269-281. 2002.
McMahon, K. H., Australian geophysical Pty Ltd report for AP2233 "Calvert Hills". Northern Territory Department of Mines and Energy, Open File company report, 70/5, Darwin, Australia, pp.130. 1970.


* 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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