Calcium sulfate veins characterized by ChemCam/Curiosity at Gale crater, Mars
M. Nachon
(1)
,
S. M. Clegg
(2)
,
N. Mangold
(1)
,
S. Schroeder
(3)
,
L. C. Kah
(4)
,
G. Dromart
(5)
,
A. Ollila
(6)
,
J. R. Johnson
(7)
,
D. Z. Oehler
(8)
,
J. C. Bridges
(9)
,
Stéphane Le Mouélic
(1)
,
O. Forni
(3)
,
R. C. Wiens
(2)
,
R. B. Anderson
(10)
,
D. L. Blaney
(11)
,
J. F. Bell
(12)
,
B. Clark
,
A. Cousin
(2)
,
M. D. Dyar
(13)
,
B. Ehlmann
(14, 11)
,
C. Fabre
(15)
,
O. Gasnault
(3)
,
J. Grotzinger
(11, 16)
,
J. Lasue
(3)
,
E. Lewin
(17)
,
R. Leveille
(18)
,
S. Mclennan
(19)
,
S. Maurice
(3)
,
P. -Y. Meslin
,
W. Rapin
(3)
,
M. Rice
(14)
,
S. W. Squyres
(20)
,
K. Stack
(16)
,
D. Y. Sumner
(21)
,
D. Vaniman
(22)
,
D. Wellington
(12)
1
LPG -
Laboratoire de Planétologie et Géodynamique [UMR 6112]
2 LANL - Los Alamos National Laboratory
3 IRAP - Institut de recherche en astrophysique et planétologie
4 The University of Tennessee [Knoxville]
5 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement
6 The University of New Mexico [Albuquerque]
7 APL - Johns Hopkins University Applied Physics Laboratory [Laurel, MD]
8 JSC - NASA Johnson Space Center
9 Space Research Centre [Leicester]
10 USGS - United States Geological Survey [Reston]
11 JPL - Jet Propulsion Laboratory
12 SESE - ASU School of Earth and Space Exploration
13 Department of Astronomy of the Mount Holyoke College
14 Division of Geological and Planetary Sciences [Pasadena]
15 GeoRessources
16 CALTECH - California Institute of Technology
17 ISTerre - Institut des Sciences de la Terre
18 CSA - Canadian Space Agency
19 SBU - Stony Brook University [SUNY]
20 Department of Astronomy [Ithaca]
21 EPS - Department of Earth and Planetary Science [UC Berkeley]
22 PSI - Planetary Science Institute [Tucson]
2 LANL - Los Alamos National Laboratory
3 IRAP - Institut de recherche en astrophysique et planétologie
4 The University of Tennessee [Knoxville]
5 LGL-TPE - Laboratoire de Géologie de Lyon - Terre, Planètes, Environnement
6 The University of New Mexico [Albuquerque]
7 APL - Johns Hopkins University Applied Physics Laboratory [Laurel, MD]
8 JSC - NASA Johnson Space Center
9 Space Research Centre [Leicester]
10 USGS - United States Geological Survey [Reston]
11 JPL - Jet Propulsion Laboratory
12 SESE - ASU School of Earth and Space Exploration
13 Department of Astronomy of the Mount Holyoke College
14 Division of Geological and Planetary Sciences [Pasadena]
15 GeoRessources
16 CALTECH - California Institute of Technology
17 ISTerre - Institut des Sciences de la Terre
18 CSA - Canadian Space Agency
19 SBU - Stony Brook University [SUNY]
20 Department of Astronomy [Ithaca]
21 EPS - Department of Earth and Planetary Science [UC Berkeley]
22 PSI - Planetary Science Institute [Tucson]
N. Mangold
- Fonction : Auteur
- PersonId : 178765
- IdHAL : nicolas-mangold
- ORCID : 0000-0002-0022-0631
- IdRef : 131065602
Stéphane Le Mouélic
- Fonction : Auteur
- PersonId : 179612
- IdHAL : stephane-le-mouelic
- ORCID : 0000-0001-5260-1367
- IdRef : 150709757
O. Forni
- Fonction : Auteur
- PersonId : 1126943
- IdHAL : o-forni
- ORCID : 0000-0001-6772-9689
- IdRef : 139768076
R. C. Wiens
- Fonction : Auteur
- PersonId : 766887
- ORCID : 0000-0002-3409-7344
B. Clark
- Fonction : Auteur
- PersonId : 757832
- ORCID : 0000-0002-2407-2880
A. Cousin
- Fonction : Auteur
- PersonId : 755683
- ORCID : 0000-0001-7823-7794
- IdRef : 165061472
C. Fabre
- Fonction : Auteur
- PersonId : 736670
- IdHAL : cecile-fabre
- ORCID : 0000-0001-8627-4050
- IdRef : 152463577
O. Gasnault
- Fonction : Auteur
- PersonId : 178757
- IdHAL : olivier-gasnault
- ORCID : 0000-0002-6979-9012
- IdRef : 25312221X
S. Mclennan
- Fonction : Auteur
- PersonId : 763292
- ORCID : 0000-0003-4259-7178
P. -Y. Meslin
- Fonction : Auteur
W. Rapin
- Fonction : Auteur
- PersonId : 1113197
- IdHAL : william-rapin
Résumé
The Curiosity rover has analyzed abundant light-toned fracture-fill material within the Yellowknife Bay sedimentary deposits. The ChemCam instrument, coupled with Mastcam and ChemCam/Remote Micro Imager images, was able to demonstrate that these fracture fills consist of calcium sulfate veins, many of which appear to be hydrated at a level expected for gypsum and bassanite. Anhydrite is locally present and is found in a location characterized by a nodular texture. An intricate assemblage of veins crosses the sediments, which were likely formed by precipitation from fluids circulating through fractures. The presence of veins throughout the entire similar to 5 m thick Yellowknife Bay sediments suggests that this process occurred well after sedimentation and cementation/lithification of those sediments. The sulfur-rich fluids may have originated in previously precipitated sulfate-rich layers, either before the deposition of the Sheepbed mudstones or from unrelated units such as the sulfates at the base of Mount Sharp. The occurrence of these veins after the episodes of deposition of fluvial sediments at the surface suggests persistent aqueous activity in relatively nonacidic conditions.
Domaines
Sciences de la Terre
Fichier principal
JGR Planets - 2014 - Nachon - Calcium sulfate veins characterized by ChemCam Curiosity at Gale crater Mars.pdf (23.43 Mo)
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