Imperial College London
Portrait Picture

Professor Gareth Collins

Faculty of Engineering, Department of Earth Science & Engineering

Professor of Planetary Science
 
 
 
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Contact

 

+44 (0)20 7594 1518g.collins Website

 
 
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Location

 

4.83Royal School of MinesSouth Kensington Campus

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Summary

 

Publications

Citation

BibTex format

@article{Rutherford:2017:10.1038/srep45206,
author = {Rutherford, ME and Chapman, DJ and Derrick, JG and Patten, JRW and Bland, PA and Rack, A and Collins, GS and Eakins, DE},
doi = {10.1038/srep45206},
journal = {Scientific Reports},
title = {Probing the early stages of shock-induced chondritic meteorite formation at the mesoscale},
url = {http://dx.doi.org/10.1038/srep45206},
volume = {7},
year = {2017}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - Chondritic meteorites are fragments of asteroids, the building blocks of planets, that retain a record of primordialprocesses. Important in their early evolution was impact-driven lithification, where a porous mixture of millimetre-scale chondrule inclusions and sub-micrometre dust was compacted into rock. In this Article, the shock compression ofanalogue precursor chondrite material was probed using state of the art dynamic X-ray radiography. Spatially-resolvedshock and particle velocities, and shock front thicknesses were extracted directly from the radiographs, representinga greatly enhanced scope of data than could be measured in surface-based studies. A statistical interpretation of themeasured velocities showed that mean values were in good agreement with those predicted using continuum-levelmodelling and mixture theory. However, the distribution and evolution of wave velocities and wavefront thicknesseswere observed to be intimately linked to the mesoscopic structure of the sample. This Article provides the first detailedexperimental insight into the distribution of extreme states within a shocked powder mixture, and represents the firstmesoscopic validation of leading theories concerning the variation in extreme pressure-temperature states during theformation of primordial planetary bodies.
AU  - Rutherford,ME
AU  - Chapman,DJ
AU  - Derrick,JG
AU  - Patten,JRW
AU  - Bland,PA
AU  - Rack,A
AU  - Collins,GS
AU  - Eakins,DE
DO  - 10.1038/srep45206
PY  - 2017///
SN  - 2045-2322
TI  - Probing the early stages of shock-induced chondritic meteorite formation at the mesoscale
T2  - Scientific Reports
UR  - http://dx.doi.org/10.1038/srep45206
UR  - http://hdl.handle.net/10044/1/44870
VL  - 7
ER  -
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