title: Volatile and organic compositions of sedimentary rocks in Yellowknife Bay, Gale crater, Mars.
abstract: H2O, CO2, SO2, O2, H2, H2S, HCl, chlorinated hydrocarbons, NO, and other trace gases were evolved during pyrolysis of two mudstone samples acquired by the Curiosity rover at Yellowknife Bay within Gale crater, Mars. H2O/OH-bearing phases included 2:1 phyllosilicate(s), bassanite, akaganeite, and amorphous materials. Thermal decomposition of carbonates and combustion of organic materials are candidate sources for the CO2. Concurrent evolution of O2 and chlorinated hydrocarbons suggests the presence of oxychlorine phase(s). Sulfides are likely sources for sulfur-bearing species. Higher abundances of chlorinated hydrocarbons in the mudstone compared with Rocknest windblown materials previously analyzed by Curiosity suggest that indigenous martian or meteoritic organic carbon sources may be preserved in the mudstone; however, the carbon source for the chlorinated hydrocarbons is not definitively of martian origin.
authors: Astromaterials Research and Exploration Science Directorate, NASA Johnson Space Center, Houston, TX 77058, USA.
authors: D W
authors: DW
authors: Ming
authors: P D
authors: PD
authors: Archer
authors: D P
authors: DP
authors: Glavin
authors: J L
authors: JL
authors: Eigenbrode
authors: H B
authors: HB
authors: Franz
authors: B
authors: B
authors: Sutter
authors: A E
authors: AE
authors: Brunner
authors: J C
authors: JC
authors: Stern
authors: C
authors: C
authors: Freissinet
authors: A C
authors: AC
authors: McAdam
authors: P R
authors: PR
authors: Mahaffy
authors: M
authors: M
authors: Cabane
authors: P
authors: P
authors: Coll
authors: J L
authors: JL
authors: Campbell
authors: S K
authors: SK
authors: Atreya
authors: P B
authors: PB
authors: Niles
authors: J F
authors: JF
authors: Bell
authors: D L
authors: DL
authors: Bish
authors: W B
authors: WB
authors: Brinckerhoff
authors: A
authors: A
authors: Buch
authors: P G
authors: PG
authors: Conrad
authors: D J
authors: DJ
authors: Des Marais
authors: B L
authors: BL
authors: Ehlmann
authors: A G
authors: AG
authors: Fairén
authors: K
authors: K
authors: Farley
authors: G J
authors: GJ
authors: Flesch
authors: P
authors: P
authors: Francois
authors: R
authors: R
authors: Gellert
authors: J A
authors: JA
authors: Grant
authors: J P
authors: JP
authors: Grotzinger
authors: S
authors: S
authors: Gupta
authors: K E
authors: KE
authors: Herkenhoff
authors: J A
authors: JA
authors: Hurowitz
authors: L A
authors: LA
authors: Leshin
authors: K W
authors: KW
authors: Lewis
authors: S M
authors: SM
authors: McLennan
authors: K E
authors: KE
authors: Miller
authors: J
authors: J
authors: Moersch
authors: R V
authors: RV
authors: Morris
authors: R
authors: R
authors: Navarro-González
authors: A A
authors: AA
authors: Pavlov
authors: G M
authors: GM
authors: Perrett
authors: I
authors: I
authors: Pradler
authors: S W
authors: SW
authors: Squyres
authors: R E
authors: RE
authors: Summons
authors: A
authors: A
authors: Steele
authors: E M
authors: EM
authors: Stolper
authors: D Y
authors: DY
authors: Sumner
authors: C
authors: C
authors: Szopa
authors: S
authors: S
authors: Teinturier
authors: M G
authors: MG
authors: Trainer
authors: A H
authors: AH
authors: Treiman
authors: D T
authors: DT
authors: Vaniman
authors: A R
authors: AR
authors: Vasavada
authors: C R
authors: CR
authors: Webster
authors: J J
authors: JJ
authors: Wray
authors: R A
authors: RA
authors: Yingst
mesh_terms: D061006:Bays; D002245:Carbon Dioxide / Q000032:analysis / Q000737:chemistry; D018559:Exobiology; D005118:Extraterrestrial Environment / Q000737:chemistry*; D019015:Geologic Sediments / Q000032:analysis / Q000737:chemistry; D006843:Hydrocarbons, Chlorinated / Q000032:analysis*; D018535:Mars; D010100:Oxygen / Q000032:analysis / Q000737:chemistry; D013440:Sulfides / Q000032:analysis / Q000737:chemistry; D055549:Volatile Organic Compounds / Q000032:analysis*; D014867:Water / Q000032:analysis / Q000737:chemistry
chemical_list: D006843:Hydrocarbons, Chlorinated; D013440:Sulfides; D055549:Volatile Organic Compounds; D014867:Water; D002245:Carbon Dioxide; D010100:Oxygen