The Petrochemistry of Jake_M: A Martian Mugearite
E. M. Stolper
(1)
,
M. B. Baker
(1)
,
M. E. Newcombe
(1)
,
M. E. Schmidt
(2)
,
A. H. Treiman
(3)
,
A. Cousin
(4, 5)
,
M. D. Dyar
(6)
,
M. R. Fisk
(7)
,
R. Gellert
(8)
,
P. L. King
(9)
,
L. Leshin
(10)
,
S. Maurice
(5)
,
S. M. Mclennan
(11)
,
M. E. Minitti
(12)
,
G. Perrett
(8)
,
S. Rowland
(13)
,
V. Sautter
(14)
,
R. C. Wiens
(4)
,
Msl Science Team
(15)
1
CALTECH -
California Institute of Technology
2 Department of Earth Sciences [St. Catharines]
3 LPI - Lunar and Planetary Institute [Houston]
4 LANL - Los Alamos National Laboratory
5 IRAP - Institut de recherche en astrophysique et planétologie
6 Mount Holyoke College
7 OSU - Oregon State University
8 University of Guelph
9 RSES - Research School of Earth Sciences [ANU, Canberra]
10 RPI - Rensselaer Polytechnic Institute
11 SUNY - State University of New York
12 APL - Johns Hopkins University Applied Physics Laboratory [Laurel, MD]
13 University of Hawaii
14 IMPMC - Institut de minéralogie, de physique des matériaux et de cosmochimie
15 MSL Science Team
2 Department of Earth Sciences [St. Catharines]
3 LPI - Lunar and Planetary Institute [Houston]
4 LANL - Los Alamos National Laboratory
5 IRAP - Institut de recherche en astrophysique et planétologie
6 Mount Holyoke College
7 OSU - Oregon State University
8 University of Guelph
9 RSES - Research School of Earth Sciences [ANU, Canberra]
10 RPI - Rensselaer Polytechnic Institute
11 SUNY - State University of New York
12 APL - Johns Hopkins University Applied Physics Laboratory [Laurel, MD]
13 University of Hawaii
14 IMPMC - Institut de minéralogie, de physique des matériaux et de cosmochimie
15 MSL Science Team
A. Cousin
- Fonction : Auteur
- PersonId : 755683
- ORCID : 0000-0001-7823-7794
- IdRef : 165061472
V. Sautter
- Fonction : Auteur
- PersonId : 741667
- IdHAL : violaine-sautter
- ORCID : 0000-0002-4263-7558
- IdRef : 055831087
Résumé
"Jake_M," the first rock analyzed by the Alpha Particle X-ray Spectrometer instrument on the Curiosity rover, differs substantially in chemical composition from other known martian igneous rocks: It is alkaline (>15% normative nepheline) and relatively fractionated. Jake_M is compositionally similar to terrestrial mugearites, a rock type typically found at ocean islands and continental rifts. By analogy with these comparable terrestrial rocks, Jake_M could have been produced by extensive fractional crystallization of a primary alkaline or transitional magma at elevated pressure, with or without elevated water contents. The discovery of Jake_M suggests that alkaline magmas may be more abundant on Mars than on Earth and that Curiosity could encounter even more fractionated alkaline rocks (for example, phonolites and trachytes).