Computer Science
Scientific paper
Jun 2005
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2005natur.435.1071b&link_type=abstract
Nature, Volume 435, Issue 7045, pp. 1071-1074 (2005).
Computer Science
28
Scientific paper
The accretion of the terrestrial planets from asteroid collisions and the delivery to the Earth of martian and lunar meteorites has been modelled extensively. Meteorites that have experienced shock waves from such collisions can potentially be used to reveal the accretion process at different stages of evolution within the Solar System. Here we have determined the peak pressure experienced and the duration of impact in a chondrite and a martian meteorite, and have combined the data with impact scaling laws to infer the sizes of the impactors and the associated craters on the meteorite parent bodies. The duration of shock events is inferred from trace element distributions between coexisting high-pressure minerals in the shear melt veins of the meteorites. The shock duration and the associated sizes of the impactor are found to be much greater in the chondrite (~1s and 5km, respectively) than in the martian meteorite (~10ms and 100m). The latter result compares well with numerical modelling studies of cratering on Mars, and we suggest that martian meteorites with similar, recent ejection ages (105 to 107years ago) may have originated from the same few square kilometres on Mars.
Beck Paul
El Goresy Ahmed
Gillet Ph.
Mostefaoui Smail
No associations
LandOfFree
Timescales of shock processes in chondritic and martian meteorites does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Timescales of shock processes in chondritic and martian meteorites, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Timescales of shock processes in chondritic and martian meteorites will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1164542