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Organic synthesis associated with serpentinization and carbonation on early Mars

DOI: 10.1126/science.abg7905 DOI Help

Authors: A. Steele (Carnegie Institution of Washington) , L. G Benning (Deutsches GeoForschungsZentrum; Free University of Berlin) , R. Writh (Deutsches GeoForschungsZentrum) , A. Schreiber (Deutsches GeoForschungsZentrum) , T. Araki (Diamond Light Source) , F. M. Mccubbin (NASA Johnson Space Center) , M. R. Fries (NASA Johnson Space Center) , L. R. Nittler (Carnegie Institution for Science, Earth and Planets Laboratory) , J. Wang (Carnegie Institution for Science, Earth and Planets Laboratory) , L. J. Hallis (University of Glasgow) , P. G. Conrad (Carnegie Institution for Science, Earth and Planets Laboratory) , C. Conley (NASA Ames Research Center) , S. Vitale (Carnegie Institution for Science, Earth and Planets Laboratory) , A. C. O'Brien (University of Glasgow) , V. Riggi (Carnegie Institution for Science, Earth and Planets Laboratory) , K. Rogers (Rensselaer Polytechnic Institute)
Co-authored by industrial partner: No

Type: Journal Paper
Journal: Science , VOL 375

State: Published (Approved)
Published: January 2022
Diamond Proposal Number(s): 2444

Abstract: Water-rock interactions are relevant to planetary habitability, influencing mineralogical diversity and the production of organic molecules. We examine carbonates and silicates in the martian meteorite Allan Hills 84001 (ALH 84001), using colocated nanoscale analyses, to characterize the nature of water-rock reactions on early Mars. We find complex refractory organic material associated with mineral assemblages that formed by mineral carbonation and serpentinization reactions. The organic molecules are colocated with nanophase magnetite; both formed in situ during water-rock interactions on Mars. Two potentially distinct mechanisms of abiotic organic synthesis operated on early Mars during the late Noachian period (3.9 to 4.1 billion years ago).

Diamond Keywords: Mars; Meteorites

Subject Areas: Earth Science


Instruments: I08-Scanning X-ray Microscopy beamline (SXM)

Added On: 17/01/2022 13:42

Discipline Tags:

Earth Sciences & Environment Geology Geochemistry Planetary Geology

Technical Tags:

Microscopy X-ray Microscopy Scanning X-ray Microscopy