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Identifying Shocked Feldspar on Mars Using Perseverance Spectroscopic Instruments : Implications for Geochronology Studies on Returned Samples

Shkolyar, S. ; Jaret, S. J. ; Cohen, B. A. ; Johnson, J. R. ; Beyssac, O. ; Madariaga, J. M. ; Wiens, R. C. ; Ollila, A. ; Holm-Alwmark, S. LU and Liu, Y. (2022) In Earth, Moon and Planets 126(2).
Abstract

The Perseverance rover (Mars 2020) mission, the first step in NASA’s Mars Sample Return (MSR) program, will select samples for caching based on their potential to improve understanding Mars’ astrobiological, geological, geochemical, and climatic evolution. Geochronologic analyses will be among the key measurements planned for returned samples. Assessing a sample’s shock history will be critical because shock metamorphism could influence apparent sample age. Shock effects in one Mars-relevant mineral class, plagioclase feldspar, have been well-documented using various spectroscopy techniques (thermal infrared reflectance, emission, and transmission spectroscopy, Raman, and luminescence). A subset of these data will be obtained with the... (More)

The Perseverance rover (Mars 2020) mission, the first step in NASA’s Mars Sample Return (MSR) program, will select samples for caching based on their potential to improve understanding Mars’ astrobiological, geological, geochemical, and climatic evolution. Geochronologic analyses will be among the key measurements planned for returned samples. Assessing a sample’s shock history will be critical because shock metamorphism could influence apparent sample age. Shock effects in one Mars-relevant mineral class, plagioclase feldspar, have been well-documented using various spectroscopy techniques (thermal infrared reflectance, emission, and transmission spectroscopy, Raman, and luminescence). A subset of these data will be obtained with the SuperCam and SHERLOC (Scanning Habitable Environments with Raman & Luminescence for Organics & Chemicals) instruments onboard Perseverance to inform caching decisions for MSR. Here, we review shock indicators in plagioclase feldspar as revealed in Raman, luminescence, and IR spectroscopy lab data, with an emphasis on Raman spectroscopy. We consider how this information may inform caching decisions for selecting optimal samples for geochronology measurements. We then identify challenges and make recommendations for both in situ measurements performed with SuperCam and SHERLOC and for supporting lab studies to enhance the success of geochronologic analyses after return to Earth.

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organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
Mars sample return, Perseverance rover, Spectroscopy
in
Earth, Moon and Planets
volume
126
issue
2
article number
4
publisher
Springer
external identifiers
  • scopus:85129631579
ISSN
0167-9295
DOI
10.1007/s11038-022-09546-6
language
English
LU publication?
yes
id
72b4e42b-4851-42d0-9eed-cde0d257d7e2
date added to LUP
2022-08-15 12:47:06
date last changed
2022-08-23 00:06:34
@article{72b4e42b-4851-42d0-9eed-cde0d257d7e2,
  abstract     = {{<p>The Perseverance rover (Mars 2020) mission, the first step in NASA’s Mars Sample Return (MSR) program, will select samples for caching based on their potential to improve understanding Mars’ astrobiological, geological, geochemical, and climatic evolution. Geochronologic analyses will be among the key measurements planned for returned samples. Assessing a sample’s shock history will be critical because shock metamorphism could influence apparent sample age. Shock effects in one Mars-relevant mineral class, plagioclase feldspar, have been well-documented using various spectroscopy techniques (thermal infrared reflectance, emission, and transmission spectroscopy, Raman, and luminescence). A subset of these data will be obtained with the SuperCam and SHERLOC (Scanning Habitable Environments with Raman &amp; Luminescence for Organics &amp; Chemicals) instruments onboard Perseverance to inform caching decisions for MSR. Here, we review shock indicators in plagioclase feldspar as revealed in Raman, luminescence, and IR spectroscopy lab data, with an emphasis on Raman spectroscopy. We consider how this information may inform caching decisions for selecting optimal samples for geochronology measurements. We then identify challenges and make recommendations for both in situ measurements performed with SuperCam and SHERLOC and for supporting lab studies to enhance the success of geochronologic analyses after return to Earth.</p>}},
  author       = {{Shkolyar, S. and Jaret, S. J. and Cohen, B. A. and Johnson, J. R. and Beyssac, O. and Madariaga, J. M. and Wiens, R. C. and Ollila, A. and Holm-Alwmark, S. and Liu, Y.}},
  issn         = {{0167-9295}},
  keywords     = {{Mars sample return; Perseverance rover; Spectroscopy}},
  language     = {{eng}},
  number       = {{2}},
  publisher    = {{Springer}},
  series       = {{Earth, Moon and Planets}},
  title        = {{Identifying Shocked Feldspar on Mars Using Perseverance Spectroscopic Instruments : Implications for Geochronology Studies on Returned Samples}},
  url          = {{http://dx.doi.org/10.1007/s11038-022-09546-6}},
  doi          = {{10.1007/s11038-022-09546-6}},
  volume       = {{126}},
  year         = {{2022}},
}