manicouagan

Lawn Hill

 Crater Name  Location  Latitude  Longitude  Diameter (km)  Age (Ma)  Exposed  Drilled  Target Rock**  Bolide Type***
 Lawn Hill  Queensland  S 18° 40'  E 138° 39'  18  > 515  Y  N  M  -
error
error
error
error

1. ***

2. DEM image Provided by Dr. Carlos Roberto de Souza Filho

3 & 4. Image Provided by Dr. Carlos Roberto de Souza Filho

References
Dietz, R. S., McHone, J. F., Astroblemes recently confirmed with shatter cones (abstract). Meteoritics, v. 26, p. 332. 1991.
Haines, P. W., Impact Cratering and Distal Ejecta: The Australian Record. Australian Journal of Earth Sciences 52, P. 481 - 507. 2005.
Roddy, D. J., Shoemaker, E.M., Shoemaker, C.S. and Roddy,J.K., Aerial photography and geologic studies of impact structures in Australia (abstract). Lunar and Planetary Science XIX, pp. 990-991. 1988.
Shoemaker, E. M., Shoemaker, C. S., The Proterozoic impact record of Australia. AGSO Journal of Australian Geology & Geophysics, v. 16, pp. 379-398. 1996.
Shoemaker, E. M., Shoemaker, C. S., Proterozoic impact record of Australia (abstract). Abstracts of the International Workshop on Meteorite Impact on the Early Earth, Perth, Australia, pp. 47-48. 1990.
Shoemaker, E. M., Shoemaker, C. S., Impact structures of Australia (1987) (abstract). Lunar and Planetary Science XIX, pp. 1079-1080. 1988.
Stewart, A., Mitchell, K., Shatter cones at the Lawn Hill circular structure, northwestern Queensland: Presumed astrobleme. Australian Journal of Earth Sciences, v. 34, pp. 477-485. 1987.
Yang, J., Radulescu, M., Paleo-fluid flow and heat transport at 1575 Ma over an E-W- section in the Northern Lawn HIll Platform, Australia: Theoretical results from finite element modeling, Journal of Geochemical Exploration, 89, P. 445 - 449. 2006.
* 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)