Boom boom pow: shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites

Luke Daly; Martin R. Lee; Sandra Piazolo; Samantha Griffin; Mohsen Bazargan; Fabrizio Campanale; Peter Chung; Benjamin E. Cohen; Annemarie Pickersgill; Lydia J. Hallis; Patrick W. Trimby; Raphael Baumgartner; Lucy V. Forman; Gretchen K. Benedix

doi:10.1126/sciadv.aaw5549

Boom boom pow: shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites

Luke Daly, Martin R. Lee, Sandra Piazolo, Samantha Griffin, Mohsen Bazargan, Fabrizio Campanale, Peter Chung, Benjamin E. Cohen, Annemarie Pickersgill, Lydia J. Hallis, Patrick W. Trimby, Raphael Baumgartner, Lucy V. Forman, Gretchen K. Benedix

School of Geosciences

Research output: Contribution to journal › Article › peer-review

Abstract

Nakhlite meteorites are 261.4 to 1.3 Ga old igneous rocks, aqueously altered on Mars 26630 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 26630 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 26630 Ma old and another, ejecting the meteorites, 2611 Ma ago.

Original language	English
Journal	Science Advances
Volume	5
Issue number	9
DOIs	https://doi.org/10.1126/sciadv.aaw5549 https://doi.org/10.1126/sciadv.aaw5549
Publication status	Published - 4 Sep 2019

Access to Document

119294112. Cohen. PFV
Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S.Government Works. Distributed under a Creative Commons Attribution License 4.0 (CC BY).
Final published version, 8.15 MBLicence: Creative Commons: Attribution (CC-BY)

Cite this

Daly, L., Lee, M. R., Piazolo, S., Griffin, S., Bazargan, M., Campanale, F., Chung, P., Cohen, B. E., Pickersgill, A., Hallis, L. J., Trimby, P. W., Baumgartner, R., Forman, L. V., & Benedix, G. K. (2019). Boom boom pow: shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites. Science Advances, 5(9). https://doi.org/10.1126/sciadv.aaw5549, https://doi.org/10.1126/sciadv.aaw5549

@article{495df7d835ad40c3be3cc248a5952c32,

title = "Boom boom pow: shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites",

abstract = "Nakhlite meteorites are 261.4 to 1.3 Ga old igneous rocks, aqueously altered on Mars 26630 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 26630 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 26630 Ma old and another, ejecting the meteorites, 2611 Ma ago.",

author = "Luke Daly and Lee, {Martin R.} and Sandra Piazolo and Samantha Griffin and Mohsen Bazargan and Fabrizio Campanale and Peter Chung and Cohen, {Benjamin E.} and Annemarie Pickersgill and Hallis, {Lydia J.} and Trimby, {Patrick W.} and Raphael Baumgartner and Forman, {Lucy V.} and Benedix, {Gretchen K.}",

year = "2019",

month = sep,

day = "4",

doi = "10.1126/sciadv.aaw5549",

language = "English",

volume = "5",

journal = "Science Advances",

issn = "2375-2548",

publisher = "American Association for the Advancement of Science",

number = "9",

}

Daly, L, Lee, MR, Piazolo, S, Griffin, S, Bazargan, M, Campanale, F, Chung, P, Cohen, BE, Pickersgill, A, Hallis, LJ, Trimby, PW, Baumgartner, R, Forman, LV & Benedix, GK 2019, 'Boom boom pow: shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites', Science Advances, vol. 5, no. 9. https://doi.org/10.1126/sciadv.aaw5549, https://doi.org/10.1126/sciadv.aaw5549

TY - JOUR

T1 - Boom boom pow: shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites

AU - Daly, Luke

AU - Lee, Martin R.

AU - Piazolo, Sandra

AU - Griffin, Samantha

AU - Bazargan, Mohsen

AU - Campanale, Fabrizio

AU - Chung, Peter

AU - Cohen, Benjamin E.

AU - Pickersgill, Annemarie

AU - Hallis, Lydia J.

AU - Trimby, Patrick W.

AU - Baumgartner, Raphael

AU - Forman, Lucy V.

AU - Benedix, Gretchen K.

PY - 2019/9/4

Y1 - 2019/9/4

N2 - Nakhlite meteorites are 261.4 to 1.3 Ga old igneous rocks, aqueously altered on Mars 26630 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 26630 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 26630 Ma old and another, ejecting the meteorites, 2611 Ma ago.

AB - Nakhlite meteorites are 261.4 to 1.3 Ga old igneous rocks, aqueously altered on Mars 26630 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 26630 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 26630 Ma old and another, ejecting the meteorites, 2611 Ma ago.

U2 - 10.1126/sciadv.aaw5549

DO - 10.1126/sciadv.aaw5549

M3 - Article

VL - 5

JO - Science Advances

JF - Science Advances

SN - 2375-2548

IS - 9

ER -

Boom boom pow: shock-facilitated aqueous alteration and evidence for two shock events in the Martian nakhlite meteorites

Abstract

Access to Document

Fingerprint

Cite this