Can the Magmatic Conditions of the Martian Nakhlites be Discerned via Investigation of Clinopyroxene and Olivine Intracrystalline Misorientations?
Deformation is a near ubiquitous process that is observed within nearly all naturally forming rocks. Electron backscatter diffraction (EBSD) is a technique that enables slip-systems (a form of plastic deformation) to be inferred from intracrystalline misorientations at a comparable scale to the repr...
| Main Authors: | , , , , , , , , , |
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| Format: | Journal Article |
| Language: | English |
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AMER GEOPHYSICAL UNION
2022
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| Online Access: | http://hdl.handle.net/20.500.11937/94372 |
| _version_ | 1848765862825164800 |
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| author | Griffin, S. Daly, L. Piazolo, S. Forman, Lucy Cohen, B.E. Lee, M.R. Trimby, P.W. Baumgartner, R.J. Benedix, Gretchen Hoefnagels, B. |
| author_facet | Griffin, S. Daly, L. Piazolo, S. Forman, Lucy Cohen, B.E. Lee, M.R. Trimby, P.W. Baumgartner, R.J. Benedix, Gretchen Hoefnagels, B. |
| author_sort | Griffin, S. |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Deformation is a near ubiquitous process that is observed within nearly all naturally forming rocks. Electron backscatter diffraction (EBSD) is a technique that enables slip-systems (a form of plastic deformation) to be inferred from intracrystalline misorientations at a comparable scale to the representative CPO analysis (≥300 crystals for the nakhlites). Extensive laboratory and studies on naturally occurring samples have identified preferential mantle condition extrinsic parameters for specific slip-system signatures within olivine and clinopyroxene. Intracrystalline misorientation patterns for olivine and augite (high Ca-clinopyroxene) for 16 different Martian nakhlite meteorites (21 sections) were analyzed and assessed against these known parameters. Investigation of high and low deformation regions within the nakhlites revealed a shift in intracrystalline misorientation patterns for 10 of the 21 sections. Interpreted as both shock (high deformations) and emplacement (low deformation) signatures, the observed variations in deformation patterns for the two main regimes of deformation indicate heterogeneous sampling of the nakhlite source crater. Our findings indicate that shock deformation is prevalent throughout the nakhlites, and that great care needs to be taken when interpreting intracrystalline misorientations of crystals within apparent lower deformation regions. |
| first_indexed | 2025-11-14T11:42:00Z |
| format | Journal Article |
| id | curtin-20.500.11937-94372 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:42:00Z |
| publishDate | 2022 |
| publisher | AMER GEOPHYSICAL UNION |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-943722024-04-04T07:12:24Z Can the Magmatic Conditions of the Martian Nakhlites be Discerned via Investigation of Clinopyroxene and Olivine Intracrystalline Misorientations? Griffin, S. Daly, L. Piazolo, S. Forman, Lucy Cohen, B.E. Lee, M.R. Trimby, P.W. Baumgartner, R.J. Benedix, Gretchen Hoefnagels, B. Science & Technology Physical Sciences Geochemistry & Geophysics EBSD nakhlite slip-systems Mars olivine clinopyroxene HIGH-TEMPERATURE DEFORMATION LATTICE PREFERRED ORIENTATIONS SINGLE-CRYSTAL CLINOPYROXENES SLIP SYSTEMS UPPER-MANTLE B-TYPE PLASTIC-DEFORMATION SEISMIC ANISOTROPY DYNAMIC RECRYSTALLIZATION WATER-CONTENT Deformation is a near ubiquitous process that is observed within nearly all naturally forming rocks. Electron backscatter diffraction (EBSD) is a technique that enables slip-systems (a form of plastic deformation) to be inferred from intracrystalline misorientations at a comparable scale to the representative CPO analysis (≥300 crystals for the nakhlites). Extensive laboratory and studies on naturally occurring samples have identified preferential mantle condition extrinsic parameters for specific slip-system signatures within olivine and clinopyroxene. Intracrystalline misorientation patterns for olivine and augite (high Ca-clinopyroxene) for 16 different Martian nakhlite meteorites (21 sections) were analyzed and assessed against these known parameters. Investigation of high and low deformation regions within the nakhlites revealed a shift in intracrystalline misorientation patterns for 10 of the 21 sections. Interpreted as both shock (high deformations) and emplacement (low deformation) signatures, the observed variations in deformation patterns for the two main regimes of deformation indicate heterogeneous sampling of the nakhlite source crater. Our findings indicate that shock deformation is prevalent throughout the nakhlites, and that great care needs to be taken when interpreting intracrystalline misorientations of crystals within apparent lower deformation regions. 2022 Journal Article http://hdl.handle.net/20.500.11937/94372 10.1029/2021JE007082 English AMER GEOPHYSICAL UNION fulltext |
| spellingShingle | Science & Technology Physical Sciences Geochemistry & Geophysics EBSD nakhlite slip-systems Mars olivine clinopyroxene HIGH-TEMPERATURE DEFORMATION LATTICE PREFERRED ORIENTATIONS SINGLE-CRYSTAL CLINOPYROXENES SLIP SYSTEMS UPPER-MANTLE B-TYPE PLASTIC-DEFORMATION SEISMIC ANISOTROPY DYNAMIC RECRYSTALLIZATION WATER-CONTENT Griffin, S. Daly, L. Piazolo, S. Forman, Lucy Cohen, B.E. Lee, M.R. Trimby, P.W. Baumgartner, R.J. Benedix, Gretchen Hoefnagels, B. Can the Magmatic Conditions of the Martian Nakhlites be Discerned via Investigation of Clinopyroxene and Olivine Intracrystalline Misorientations? |
| title | Can the Magmatic Conditions of the Martian Nakhlites be Discerned via Investigation of Clinopyroxene and Olivine Intracrystalline Misorientations? |
| title_full | Can the Magmatic Conditions of the Martian Nakhlites be Discerned via Investigation of Clinopyroxene and Olivine Intracrystalline Misorientations? |
| title_fullStr | Can the Magmatic Conditions of the Martian Nakhlites be Discerned via Investigation of Clinopyroxene and Olivine Intracrystalline Misorientations? |
| title_full_unstemmed | Can the Magmatic Conditions of the Martian Nakhlites be Discerned via Investigation of Clinopyroxene and Olivine Intracrystalline Misorientations? |
| title_short | Can the Magmatic Conditions of the Martian Nakhlites be Discerned via Investigation of Clinopyroxene and Olivine Intracrystalline Misorientations? |
| title_sort | can the magmatic conditions of the martian nakhlites be discerned via investigation of clinopyroxene and olivine intracrystalline misorientations? |
| topic | Science & Technology Physical Sciences Geochemistry & Geophysics EBSD nakhlite slip-systems Mars olivine clinopyroxene HIGH-TEMPERATURE DEFORMATION LATTICE PREFERRED ORIENTATIONS SINGLE-CRYSTAL CLINOPYROXENES SLIP SYSTEMS UPPER-MANTLE B-TYPE PLASTIC-DEFORMATION SEISMIC ANISOTROPY DYNAMIC RECRYSTALLIZATION WATER-CONTENT |
| url | http://hdl.handle.net/20.500.11937/94372 |