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The Chemistry of Mars

The Chemistry of Mars. Heather Tennant Earth 438 Presented March 11, 2014. Motivation. Bulk Chemical Composition F ormation and evolution of the planet Initial concentrations of surface components Surface Chemistry Geologic processes throughout history Aqueous Alteration

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The Chemistry of Mars

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  1. The Chemistry of Mars Heather Tennant Earth 438 Presented March 11, 2014

  2. Motivation • Bulk Chemical Composition • Formation and evolution of the planet • Initial concentrations of surface components • Surface Chemistry • Geologic processes throughout history • Aqueous Alteration • Differentiation • Geochemical cycling • Biological implications

  3. Bulk Composition • Methods of estimation: • Geochemical/cosmochemical models • Meteorites, chondrites • Isotopic • Meteorites, chondrites • Geophysical • Bulk density, moment of inertia, Love number, radius • Need for seismic data and heat flow data

  4. Bulk Composition

  5. Surface Chemistry • Methods of measurement: • Orbital/Remote Sensing • Reflectance spectroscopy • Gamma Ray Spectroscopy • Neutron Spectroscopy • In situ measurements • Spectroscopy • Imaging • Meteorites

  6. Geochemical Mapping (Odessey GRS) 5 Geochemical Provinces

  7. Carbonation and Chlorination (CHRISM)

  8. Sulfur Cycling

  9. Petrochemistryof Jake_M (MAHLI,APXS) E. M. Stolper et al., Science 21 February 2014

  10. Chemical Analysis of Rocknest (APXS)

  11. 2012 Meteorite - Tissint H. ChennaouiAoudjehane Science 9 November 2012

  12. Future Directions • Seismometers • Raman Spectroscopy (MarsExo 2018) • Sample Return

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