TY - JOUR
T1 - Detection of Reduced Sulfur on Vera Rubin Ridge by Quadratic Discriminant Analysis of Volatiles Observed During Evolved Gas Analysis
AU - Wong, Gregory M.
AU - Lewis, James M.T.
AU - Knudson, Christine A.
AU - Millan, Maëva
AU - McAdam, Amy C.
AU - Eigenbrode, Jennifer L.
AU - Andrejkovičová, Slavka
AU - Gómez, Felipe
AU - Navarro-González, Rafael
AU - House, Christopher H.
N1 - Funding Information:
We thank the Mars Science Laboratory and Sample Analysis at Mars teams for their dedicated work operating the mission as well as their support in data collection, analyses, and discussions. G.M.W, A.C.M, J.L.E., and C.H.H acknowledge the NASA Mars Exploration Program for providing support through the MSL Participating Scientist Program. G.M.W. acknowledges support of a NASA Earth and Space Science Fellowship. J.M.T.L. acknowledges support from the NASA Postdoctoral Program. R.N.G. acknowledges the support of Universidad Nacional Autónoma de México (UNAM: PAPIIT IN111619 and PAPIME PE102319). We also thank two anonymous reviewers for their valuable input in significantly improving this manuscript.
Funding Information:
We thank the Mars Science Laboratory and Sample Analysis at Mars teams for their dedicated work operating the mission as well as their support in data collection, analyses, and discussions. G.M.W, A.C.M, J.L.E., and C.H.H acknowledge the NASA Mars Exploration Program for providing support through the MSL Participating Scientist Program. G.M.W. acknowledges support of a NASA Earth and Space Science Fellowship. J.M.T.L. acknowledges support from the NASA Postdoctoral Program. R.N.G. acknowledges the support of Universidad Nacional Autónoma de México (UNAM: PAPIIT IN111619 and PAPIME PE102319). We also thank two anonymous reviewers for their valuable input in significantly improving this manuscript.
Publisher Copyright:
© 2020. American Geophysical Union. All Rights Reserved.
PY - 2020/8/1
Y1 - 2020/8/1
N2 - The Mars Science Laboratory mission investigated Vera Rubin ridge, which bears spectral indications of elevated amounts of hematite and has been hypothesized as having a complex diagenetic history. Martian samples, including three drilled samples from the ridge, were analyzed by the Sample Analysis at Mars instrument suite via evolved gas analysis-mass spectrometry (EGA-MS). Here, we report new EGA-MS data from Martian samples and describe laboratory analogue experiments. Analyses of laboratory analogues help determine the presence of reduced sulfur in Martian solid samples, which could have supported potential microbial life. We used evolved carbonyl sulfide (COS) and carbon disulfide (CS2) to identify Martian samples likely to contain reduced sulfur by applying a quadratic discriminant analysis. While we report results for 24 Martian samples, we focus on Vera Rubin ridge samples and select others for comparison. Our results suggest the presence of reduced sulfur in the Jura member of Vera Rubin ridge, which can support various diagenetic history models, including, as discussed in this work, diagenetic alteration initiated by a mildly reducing, sulfite-containing groundwater.
AB - The Mars Science Laboratory mission investigated Vera Rubin ridge, which bears spectral indications of elevated amounts of hematite and has been hypothesized as having a complex diagenetic history. Martian samples, including three drilled samples from the ridge, were analyzed by the Sample Analysis at Mars instrument suite via evolved gas analysis-mass spectrometry (EGA-MS). Here, we report new EGA-MS data from Martian samples and describe laboratory analogue experiments. Analyses of laboratory analogues help determine the presence of reduced sulfur in Martian solid samples, which could have supported potential microbial life. We used evolved carbonyl sulfide (COS) and carbon disulfide (CS2) to identify Martian samples likely to contain reduced sulfur by applying a quadratic discriminant analysis. While we report results for 24 Martian samples, we focus on Vera Rubin ridge samples and select others for comparison. Our results suggest the presence of reduced sulfur in the Jura member of Vera Rubin ridge, which can support various diagenetic history models, including, as discussed in this work, diagenetic alteration initiated by a mildly reducing, sulfite-containing groundwater.
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U2 - 10.1029/2019JE006304
DO - 10.1029/2019JE006304
M3 - Article
AN - SCOPUS:85089843422
SN - 2169-9097
VL - 125
JO - Journal of Geophysical Research: Planets
JF - Journal of Geophysical Research: Planets
IS - 8
M1 - e2019JE006304
ER -