Major volatiles evolved from eolian materials in Gale crater - INSU - Institut national des sciences de l'Univers Access content directly
Journal Articles Geophysical Research Letters Year : 2018

Major volatiles evolved from eolian materials in Gale crater


The Sample Analysis at Mars (SAM) on the Curiosity rover analyzed the major volatile content of four eolian samples at three locations in Gale crater. The Rocknest sample was taken from an inactive sand shadow with a significant component of dust‐sized grains, while Gobabeb and Ogunquit Beach samples were taken from different locations in the Bagnold Dune field and had dust‐free, fine sand sized grains. All eolian samples possessed more oxychlorine, carbon, and nitrate relative to sedimentary materials in Gale crater. Evolved CO2 above 450°C was consistent with ~0.7 and ~0.4 wt. % carbonate in the Bagnold Dunes and Rocknest materials, respectively, with a regional source inside Gale crater. The fine‐grained phase of Rocknest was enriched in adsorbed water and perhaps in Fe sulfate and Fe nitrate/nitrite compared to coarser Bagnold materials, and was estimated to contain up to ~0.1 wt. % of organic carbon.
Fichier principal
Vignette du fichier
2018GL079059.pdf (993.37 Ko) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

insu-01876721 , version 1 (06-11-2020)



Jennifer Stern, Brad Sutter, P. Douglas Archer, Jennifer L. Eigenbrode, Amy Mcadam, et al.. Major volatiles evolved from eolian materials in Gale crater. Geophysical Research Letters, 2018, 45 (19), pp.10,240-10,248. ⟨10.1029/2018GL079059⟩. ⟨insu-01876721⟩
115 View
105 Download



Gmail Facebook X LinkedIn More