Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Aqueous geochemistry on early Mars.

M W Schaefer1

  • 1Astronomy Department, University of Maryland, College Park 20742, USA.

Geochimica Et Cosmochimica Acta
|October 1, 1993
PubMed
Summary

A new geochemical model suggests Mars

Related Concept Videos

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same journal

Mineral transformations driven by <i>Acidimicrobium sp</i>. A6 increase the bioavailability of crystalline Fe oxides in co-cultures with <i>Geobacter sulfurreducens</i>.

Geochimica et cosmochimica acta·2026
Same journal

The effect of biogeochemical redox oscillations on arsenic release from legacy mine tailings.

Geochimica et cosmochimica acta·2023
Same journal

Influence of clay mineral weathering on green rust formation at iron-reducing conditions.

Geochimica et cosmochimica acta·2023
Same journal

Citation for the 2020 F.W. Clarke Medal to Daniel Stolper.

Geochimica et cosmochimica acta·2022
Same journal

Citation for the 2020 V.M. Goldschmidt Award to Richard W. Carlson.

Geochimica et cosmochimica acta·2022
Same journal

Geochemical transformations beneath man-made ponds: Implications for arsenic mobilization in South Asian aquifers.

Geochimica et cosmochimica acta·2022

Area of Science:

  • Planetary Science
  • Geochemistry
  • Astrobiology

Background:

  • Mars' current environment is vastly different from its primitive state.
  • Understanding Mars' geochemical cycles is key to deciphering its environmental evolution.
  • Previous models did not account for time-varying atmospheric and oceanic conditions.

Purpose of the Study:

  • To model the geochemical interactions between Mars' atmosphere, hydrosphere, and regolith.
  • To investigate the potential pathways for Mars' environmental transformation from a primitive to its current state.
  • To assess the atmospheric lifetime and its implications for surface feature formation.

Main Methods:

  • Development of a simple geochemical cycle model.
  • Inclusion of key components: silicate weathering, CO2 atmosphere, ocean, and carbonate precipitates.
  • Simulation of the long-term evolution of the Martian environment.

Main Results:

  • A 1-bar CO2 atmosphere can be removed by carbonate precipitation in approximately 0.5 billion years.
  • This atmospheric lifetime is significantly longer than previously estimated.
  • Increased ocean alkalinity suggests potential for evaporite deposits, possibly containing liquid water.

Conclusions:

  • The extended atmospheric lifetime may explain the prevalence of aqueous erosion features on Mars.
  • The model provides a plausible mechanism for the formation of evaporite deposits.
  • Further investigation into potential subsurface liquid water in evaporite deposits is warranted.

Related Experiment Videos