On the survivability and detectability of terrestrial meteorites on the moon
Crawford, Ian and Baldwin, E.C. and Taylor, E.A. and Bailey, J.A. and Tsembelis, K. (2008) On the survivability and detectability of terrestrial meteorites on the moon. Astrobiology 8 (2), pp. 242-252. ISSN 1531-1074.
Materials blasted into space from the surface of early Earth may preserve a unique record of our planet's early surface environment. Armstrong et al. (2002) pointed out that such materials, in the form of terrestrial meteorites, may exist on the Moon and be of considerable astrobiological interest if biomarkers from early Earth are preserved within them. Here, we report results obtained via the AUTODYN hydrocode to calculate the peak pressures within terrestrial meteorites on the lunar surface to assess their likelihood of surviving the impact. Our results confirm the order-of-magnitude estimates of Armstrong et al. (2002) that substantial survivability is to be expected, especially in the case of relatively low velocity (ca. 2.5 km/s) or oblique (≤45°) impacts, or both. We outline possible mechanisms for locating such materials on the Moon and conclude that searching for them would be a scientifically valuable activity for future lunar exploration.
|Additional Information:||This is a copy of an article published in the Astrobiology © 2008 [copyright Mary Ann Liebert, Inc.]; [Astrobiology} is available online at: http://www.liebertonline.com.|
|School:||Birkbeck Schools and Departments > School of Science > Earth and Planetary Sciences|
|Date Deposited:||09 Feb 2011 15:13|
|Last Modified:||08 Jun 2016 09:32|
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