@article{Bland:2014:10.1038/ncomms6451,
author = {Bland, PA and Collins, GS and Davison, TM and Abreu, NM and Ciesla, FJ and Muxworthy, AR and Moore, J},
doi = {10.1038/ncomms6451},
journal = {Nature Communications},
pages = {1--13},
title = {Pressure-temperature evolution of primordial solar system solids during impact-induced compaction},
url = {http://dx.doi.org/10.1038/ncomms6451},
volume = {5},
year = {2014}
}

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TY  - JOUR
AB  - Prior to becoming chondritic meteorites, primordial solids were a poorly consolidated mix of mm-scale igneous inclusions (chondrules) and high-porosity sub-μm dust (matrix). We used high-resolution numerical simulations to track the effect of impact-induced compaction on these materials. Here we show that impact velocities as low as 1.5 km s−1 were capable of heating the matrix to >1,000 K, with pressure–temperature varying by >10 GPa and >1,000 K over ~100 μm. Chondrules were unaffected, acting as heat-sinks: matrix temperature excursions were brief. As impact-induced compaction was a primary and ubiquitous process, our new understanding of its effects requires that key aspects of the chondrite record be re-evaluated: palaeomagnetism, petrography and variability in shock level across meteorite groups. Our data suggest a lithification mechanism for meteorites, and provide a ‘speed limit’ constraint on major compressive impacts that is inconsistent with recent models of solar system orbital architecture that require an early, rapid phase of main-belt collisional evolution.
AU  - Bland,PA
AU  - Collins,GS
AU  - Davison,TM
AU  - Abreu,NM
AU  - Ciesla,FJ
AU  - Muxworthy,AR
AU  - Moore,J
DO  - 10.1038/ncomms6451
EP  - 13
PY  - 2014///
SN  - 2041-1723
SP  - 1
TI  - Pressure-temperature evolution of primordial solar system solids during impact-induced compaction
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/ncomms6451
UR  - http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000347221500001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
UR  - https://www.nature.com/articles/ncomms6451
UR  - http://hdl.handle.net/10044/1/21466
VL  - 5
ER  - 

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