Record Details

Microimpact phenomena on Australasian microtektites: Implications for ejecta plume characteristics and lunar surface processes

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Microimpact phenomena on Australasian microtektites: Implications for ejecta plume characteristics and lunar surface processes
 
Creator ShyamPrasad, M.
Sudhakar, M.
 
Subject microtektites
Central Indian Basin
ejecta plume
sedimentation
lunar surface processes
 
Description Detailed investigations of the microimpact phenomena on Australasian microtektites from four samples from the Central Indian Basin reveal an array of features, such as very low-velocity captured droplets, welded projectiles, angular fragments and dust, craters generated by projectiles defining an oblique trajectory, high-velocity "pitless" craters, and the conventional hypervelocity craters with well-defined central pits and radial and concentric cracks-found commonly on lunar surface materials. The microimpacts are a consequence of interparticle collisions within the ejecta plume (as suggested by their chemistry) subsequent to a major impact and, therefore, reveal processes inherent in an impact-generated plume. All the impact phenomena observed here have taken place while the targets and projectiles were in flight and are therefore secondary impacts in lunar terms. However, some of the resultant features are analogous to lunar microcraters attributed to primary impacts by cosmic dust. Therefore, ballistic sedimentation on the Moon is likely to contain plume collisional debris as well
 
Date 2008-02-22T05:31:30Z
2008-02-22T05:31:30Z
1998
 
Type Journal Article
 
Identifier Meteoritics & Planetary Science, Vol.33(6); 1271-1279p.
http://drs.nio.org/drs/handle/2264/981
 
Language en
 
Rights Copyright [1998]. It is tried to respect the rights of the copyright holders to the best of the knowledge. If it is brought to our notice by copyright holder that the rights are violated then the item would be withdrawn.
 
Publisher Meteoritical Society