Chemical alteration of fine-grained sedimentary rocks at Gale crater

Research output: Contribution to journal › Journal article › Research › peer-review

Standard

Chemical alteration of fine-grained sedimentary rocks at Gale crater. / Mangold, Nicolas; Dehouck, E.; Fedo, C.; Forni, Olivier; Achilles, C.; Bristow, T.; Downs, R. T.; Frydenvang, J.; Gasnault, Olivier; L'Haridon, J.; Le Deit, L.; Maurice, Sylvestre; McLennan, S. M.; Meslin, Pierre-Yves; Morrison, S.; Newsom, H. E.; Rampe, E.; Rapin, William; Rivera-Hernandez, F.; Salvatore, M.

In: Icarus, Vol. 321, 15.03.2019, p. 619-631.

Research output: Contribution to journal › Journal article › Research › peer-review

Harvard

Mangold, N, Dehouck, E, Fedo, C, Forni, O, Achilles, C, Bristow, T, Downs, RT, Frydenvang, J, Gasnault, O, L'Haridon, J, Le Deit, L, Maurice, S, McLennan, SM, Meslin, P-Y, Morrison, S, Newsom, HE, Rampe, E, Rapin, W, Rivera-Hernandez, F & Salvatore, M 2019, 'Chemical alteration of fine-grained sedimentary rocks at Gale crater', Icarus, vol. 321, pp. 619-631. https://doi.org/10.1016/j.icarus.2018.11.004

APA

Mangold, N., Dehouck, E., Fedo, C., Forni, O., Achilles, C., Bristow, T., Downs, R. T., Frydenvang, J., Gasnault, O., L'Haridon, J., Le Deit, L., Maurice, S., McLennan, S. M., Meslin, P-Y., Morrison, S., Newsom, H. E., Rampe, E., Rapin, W., Rivera-Hernandez, F., & Salvatore, M. (2019). Chemical alteration of fine-grained sedimentary rocks at Gale crater. Icarus, 321, 619-631. https://doi.org/10.1016/j.icarus.2018.11.004

Vancouver

Mangold N, Dehouck E, Fedo C, Forni O, Achilles C, Bristow T et al. Chemical alteration of fine-grained sedimentary rocks at Gale crater. Icarus. 2019 Mar 15;321:619-631. https://doi.org/10.1016/j.icarus.2018.11.004

Author

Mangold, Nicolas ; Dehouck, E. ; Fedo, C. ; Forni, Olivier ; Achilles, C. ; Bristow, T. ; Downs, R. T. ; Frydenvang, J. ; Gasnault, Olivier ; L'Haridon, J. ; Le Deit, L. ; Maurice, Sylvestre ; McLennan, S. M. ; Meslin, Pierre-Yves ; Morrison, S. ; Newsom, H. E. ; Rampe, E. ; Rapin, William ; Rivera-Hernandez, F. ; Salvatore, M. / Chemical alteration of fine-grained sedimentary rocks at Gale crater. In: Icarus. 2019 ; Vol. 321. pp. 619-631.

Bibtex

@article{cbc94fef499249909bbf8c89e03909eb,
title = "Chemical alteration of fine-grained sedimentary rocks at Gale crater",
abstract = "From Sol 750 to 1550, the Curiosity rover documented>100 m thick stack of fine-grained sedimentary rocks making up part of the Murray formation, at the base of Mt Sharp, Gale crater. Here, we use data collected by the ChemCam instrument to estimate the level of chemical weathering in these sedimentary rocks. Both the Chemical Index of Alteration (CIA) and the Weathering Index Scale (WIS) indicate a progressive increase in alteration up section, reaching values of CIA of 63 and WIS of 25%. The increase in CIA and WIS values is coupled with a decrease in calcium abundance, suggesting partial dissolution of Ca-bearing minerals (clinopyroxene and plagioclase). Mineralogy from the CheMin X-ray diffraction instrument indicates a decrease in mafic minerals compared with previously analyzed strata and a significant proportion of phyllosilicates consistent with this interpretation. These observations suggest that the sediments were predominantly altered in an open system, before or during their emplacement, contrasting with the rock-dominated conditions inferred in sedimentary deposits analyzed at Yellowknife Bay.",
author = "Nicolas Mangold and E. Dehouck and C. Fedo and Olivier Forni and C. Achilles and T. Bristow and Downs, {R. T.} and J. Frydenvang and Olivier Gasnault and J. L'Haridon and {Le Deit}, L. and Sylvestre Maurice and McLennan, {S. M.} and Pierre-Yves Meslin and S. Morrison and Newsom, {H. E.} and E. Rampe and William Rapin and F. Rivera-Hernandez and M. Salvatore",
year = "2019",
month = mar,
day = "15",
doi = "10.1016/j.icarus.2018.11.004",
language = "English",
volume = "321",
pages = "619--631",
journal = "Icarus",
issn = "0019-1035",
publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - Chemical alteration of fine-grained sedimentary rocks at Gale crater

AU - Mangold, Nicolas

AU - Dehouck, E.

AU - Fedo, C.

AU - Forni, Olivier

AU - Achilles, C.

AU - Bristow, T.

AU - Downs, R. T.

AU - Frydenvang, J.

AU - Gasnault, Olivier

AU - L'Haridon, J.

AU - Le Deit, L.

AU - Maurice, Sylvestre

AU - McLennan, S. M.

AU - Meslin, Pierre-Yves

AU - Morrison, S.

AU - Newsom, H. E.

AU - Rampe, E.

AU - Rapin, William

AU - Rivera-Hernandez, F.

AU - Salvatore, M.

PY - 2019/3/15

Y1 - 2019/3/15

N2 - From Sol 750 to 1550, the Curiosity rover documented>100 m thick stack of fine-grained sedimentary rocks making up part of the Murray formation, at the base of Mt Sharp, Gale crater. Here, we use data collected by the ChemCam instrument to estimate the level of chemical weathering in these sedimentary rocks. Both the Chemical Index of Alteration (CIA) and the Weathering Index Scale (WIS) indicate a progressive increase in alteration up section, reaching values of CIA of 63 and WIS of 25%. The increase in CIA and WIS values is coupled with a decrease in calcium abundance, suggesting partial dissolution of Ca-bearing minerals (clinopyroxene and plagioclase). Mineralogy from the CheMin X-ray diffraction instrument indicates a decrease in mafic minerals compared with previously analyzed strata and a significant proportion of phyllosilicates consistent with this interpretation. These observations suggest that the sediments were predominantly altered in an open system, before or during their emplacement, contrasting with the rock-dominated conditions inferred in sedimentary deposits analyzed at Yellowknife Bay.

AB - From Sol 750 to 1550, the Curiosity rover documented>100 m thick stack of fine-grained sedimentary rocks making up part of the Murray formation, at the base of Mt Sharp, Gale crater. Here, we use data collected by the ChemCam instrument to estimate the level of chemical weathering in these sedimentary rocks. Both the Chemical Index of Alteration (CIA) and the Weathering Index Scale (WIS) indicate a progressive increase in alteration up section, reaching values of CIA of 63 and WIS of 25%. The increase in CIA and WIS values is coupled with a decrease in calcium abundance, suggesting partial dissolution of Ca-bearing minerals (clinopyroxene and plagioclase). Mineralogy from the CheMin X-ray diffraction instrument indicates a decrease in mafic minerals compared with previously analyzed strata and a significant proportion of phyllosilicates consistent with this interpretation. These observations suggest that the sediments were predominantly altered in an open system, before or during their emplacement, contrasting with the rock-dominated conditions inferred in sedimentary deposits analyzed at Yellowknife Bay.

U2 - 10.1016/j.icarus.2018.11.004

DO - 10.1016/j.icarus.2018.11.004

M3 - Journal article

AN - SCOPUS:85058403760

VL - 321

SP - 619

EP - 631

JO - Icarus

JF - Icarus

SN - 0019-1035

ER -

ID: 223515696