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Investigation of the shocked Viñales ordinary chondrite (L6) meteorite fall – Implications for shock classification, fragmentation, and collision dynamics

Baziotis, I. P. and Xydous, S. and Papoutsa, A. and Hu, J. and Ma, C. and Ferrière, L. and Klemme, S. and Berndt, J and Asimow, P. D. (2023) Investigation of the shocked Viñales ordinary chondrite (L6) meteorite fall – Implications for shock classification, fragmentation, and collision dynamics. Icarus, 390 . Art. No. 115326. ISSN 0019-1035. doi:10.1016/j.icarus.2022.115326. https://resolver.caltech.edu/CaltechAUTHORS:20221128-494241100.28

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Abstract

The effects of collisions on the evolution of asteroids, ranging from local fracturing to brecciation or even to catastrophic disruption, depend primarily on the encounter velocities. Here we present a refined view of the mineralogy and texture of the recent fall Viñales, an L6 ordinary chondrite meteorite. It preserves features that require at least one energetic impact, including numerous shock melt veins of variable thickness. We report the identification of two high-pressure phases, majorite and albitic jadeite, limited to just one of these shock melt veins. Viñales is a moderately shocked sample, shock stage S4, that experienced a complex and spatially variable pressure-temperature-time history with a low (but non-zero) probability of preservation of high-pressure phases.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1016/j.icarus.2022.115326DOIArticle
ORCID:
AuthorORCID
Baziotis, I. P.0000-0003-0185-5847
Hu, J.0000-0003-0415-4616
Ma, C.0000-0002-1828-7033
Ferrière, L.0000-0002-9082-6230
Klemme, S.0000-0001-7859-9779
Berndt, J0000-0002-6766-3066
Asimow, P. D.0000-0001-6025-8925
Additional Information:I.B., S.X., and A.P. received support for this research from ESF and the Greek State (call code EDBM103). I.B. research received support from the SYNTHESYS Project (http://www.synthesys.info/ which is financed by European Community Research Infrastructure Action under the FP7 “Capacities” Program, covering travel and accommodation as well as instrument time costs at the Natural History Museum Vienna (Austria). PDA acknowledged NSF award 1725349.
Group:Division of Geological and Planetary Sciences
Funders:
Funding AgencyGrant Number
European Social FundEDBM103
European Research Council (ERC)UNSPECIFIED
NSFEAR-1725349
DOI:10.1016/j.icarus.2022.115326
Record Number:CaltechAUTHORS:20221128-494241100.28
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20221128-494241100.28
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:118068
Collection:CaltechAUTHORS
Deposited By: Research Services Depository
Deposited On:16 Dec 2022 00:38
Last Modified:16 Dec 2022 21:28

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