Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites
Nakhlite meteorites are ~1.4 to 1.3 Ga old igneous rocks, aqueously altered on Mars ~630 Ma ago. We test the theory that water-rock interaction was impact driven. Electron backscatter diffraction demonstrates that the meteorites Miller Range 03346 and Lafayette were heterogeneously deformed, leading...
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American Association for the Advancement of Science
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ftleedsuniv:oai:eprints.whiterose.ac.uk:152119 2023-05-15T17:57:43+02:00 Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites Daly, L Lee, MR Piazolo, S Griffin, S Bazargan, M Campanale, F Chung, P Cohen, BE Pickersgill, AE Hallis, LJ Trimby, PW Baumgartner, R Forman, LV Benedix, GK 2019-09-04 text https://eprints.whiterose.ac.uk/152119/ https://eprints.whiterose.ac.uk/152119/7/eaaw5549.full.pdf en eng American Association for the Advancement of Science https://eprints.whiterose.ac.uk/152119/7/eaaw5549.full.pdf Daly, L, Lee, MR, Piazolo, S orcid.org/0000-0001-7723-8170 et al. (11 more authors) (2019) Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites. Science Advances, 5 (9). eaaw5549. ISSN 2375-2548 cc_by_4 CC-BY Article NonPeerReviewed 2019 ftleedsuniv 2023-01-30T22:23:20Z Nakhlite meteorites are ~1.4 to 1.3 Ga old igneous rocks, aqueously altered on Mars ~630 Ma ago. We test the theory that water-rock interaction was impact driven. Electron backscatter diffraction demonstrates that the meteorites Miller Range 03346 and Lafayette were heterogeneously deformed, leading to localized regions of brecciation, plastic deformation, and mechanical twinning of augite. Numerical modeling shows that the pattern of deformation is consistent with shock-generated compressive and tensile stresses. Mesostasis within shocked areas was aqueously altered to phyllosilicates, carbonates, and oxides, suggesting a genetic link between the two processes. We propose that an impact ~630 Ma ago simultaneously deformed the nakhlite parent rocks and generated liquid water by melting of permafrost. Ensuing water-rock interaction focused on shocked mesostasis with a high density of reactive sites. The nakhlite source location must have two spatially correlated craters, one ~630 Ma old and another, ejecting the meteorites, ~11 Ma ago. Article in Journal/Newspaper permafrost White Rose Research Online (Universities of Leeds, Sheffield & York) Miller Range ENVELOPE(157.000,157.000,-83.167,-83.167) |
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Open Polar |
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White Rose Research Online (Universities of Leeds, Sheffield & York) |
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ftleedsuniv |
language |
English |
description |
Nakhlite meteorites are ~1.4 to 1.3 Ga old igneous rocks, aqueously altered on Mars ~630 Ma ago. We test the theory that water-rock interaction was impact driven. Electron backscatter diffraction demonstrates that the meteorites Miller Range 03346 and Lafayette were heterogeneously deformed, leading to localized regions of brecciation, plastic deformation, and mechanical twinning of augite. Numerical modeling shows that the pattern of deformation is consistent with shock-generated compressive and tensile stresses. Mesostasis within shocked areas was aqueously altered to phyllosilicates, carbonates, and oxides, suggesting a genetic link between the two processes. We propose that an impact ~630 Ma ago simultaneously deformed the nakhlite parent rocks and generated liquid water by melting of permafrost. Ensuing water-rock interaction focused on shocked mesostasis with a high density of reactive sites. The nakhlite source location must have two spatially correlated craters, one ~630 Ma old and another, ejecting the meteorites, ~11 Ma ago. |
format |
Article in Journal/Newspaper |
author |
Daly, L Lee, MR Piazolo, S Griffin, S Bazargan, M Campanale, F Chung, P Cohen, BE Pickersgill, AE Hallis, LJ Trimby, PW Baumgartner, R Forman, LV Benedix, GK |
spellingShingle |
Daly, L Lee, MR Piazolo, S Griffin, S Bazargan, M Campanale, F Chung, P Cohen, BE Pickersgill, AE Hallis, LJ Trimby, PW Baumgartner, R Forman, LV Benedix, GK Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites |
author_facet |
Daly, L Lee, MR Piazolo, S Griffin, S Bazargan, M Campanale, F Chung, P Cohen, BE Pickersgill, AE Hallis, LJ Trimby, PW Baumgartner, R Forman, LV Benedix, GK |
author_sort |
Daly, L |
title |
Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites |
title_short |
Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites |
title_full |
Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites |
title_fullStr |
Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites |
title_full_unstemmed |
Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites |
title_sort |
boom boom pow: shock-facilitated aqueous alteration and evidence for two shock events in the martian nakhlite meteorites |
publisher |
American Association for the Advancement of Science |
publishDate |
2019 |
url |
https://eprints.whiterose.ac.uk/152119/ https://eprints.whiterose.ac.uk/152119/7/eaaw5549.full.pdf |
long_lat |
ENVELOPE(157.000,157.000,-83.167,-83.167) |
geographic |
Miller Range |
geographic_facet |
Miller Range |
genre |
permafrost |
genre_facet |
permafrost |
op_relation |
https://eprints.whiterose.ac.uk/152119/7/eaaw5549.full.pdf Daly, L, Lee, MR, Piazolo, S orcid.org/0000-0001-7723-8170 et al. (11 more authors) (2019) Boom boom pow: Shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites. Science Advances, 5 (9). eaaw5549. ISSN 2375-2548 |
op_rights |
cc_by_4 |
op_rightsnorm |
CC-BY |
_version_ |
1766166216277229568 |