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{Wiggins:2022:10.1038/s41467-022-32445-3,
author = {Wiggins, SE and Johnson, BC and Collins, GS and Jay, Melosh H and Marchi, S},
doi = {10.1038/s41467-022-32445-3},
journal = {Nature Communications},
pages = {1--6},
title = {Widespread impact-generated porosity in early planetary crusts.},
url = {http://dx.doi.org/10.1038/s41467-022-32445-3},
volume = {13},
year = {2022}
}
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RIS format (EndNote, RefMan)

TY  - JOUR
AB  - NASA's Gravity Recovery and Interior Laboratory (GRAIL) spacecraft revealed the crust of the Moon is highly porous, with ~4% porosity at 20 km deep. The deep lying porosity discovered by GRAIL has been difficult to explain, with most current models only able to explain high porosity near the lunar surface (first few kilometers) or inside complex craters. Using hydrocode routines we simulated fracturing and generation of porosity by large impacts in lunar, martian, and Earth crust. Our simulations indicate impacts that produce 100-1000 km scale basins alone are capable of producing all observed porosity within the lunar crust. Simulations under the higher surface gravity of Mars and Earth suggest basin forming impacts can be a primary source of porosity and fracturing of ancient planetary crusts. Thus, we show that impacts could have supported widespread crustal fluid circulation, with important implications for subsurface habitable environments on early Earth and Mars.
AU  - Wiggins,SE
AU  - Johnson,BC
AU  - Collins,GS
AU  - Jay,Melosh H
AU  - Marchi,S
DO  - 10.1038/s41467-022-32445-3
EP  - 6
PY  - 2022///
SN  - 2041-1723
SP  - 1
TI  - Widespread impact-generated porosity in early planetary crusts.
T2  - Nature Communications
UR  - http://dx.doi.org/10.1038/s41467-022-32445-3
UR  - https://www.ncbi.nlm.nih.gov/pubmed/35974008
UR  - https://www.nature.com/articles/s41467-022-32445-3
UR  - http://hdl.handle.net/10044/1/99203
VL  - 13
ER  -
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