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2009 Annual Science Report

University of Hawaii, Manoa Reporting  |  JUL 2008 – AUG 2009

Mars Bulk Composition

Project Summary

The bulk composition of Mars, including its total inventory of water, is central to understanding how planets form and to fully understanding the role of water in Martian geological evolution.

4 Institutions
3 Teams
4 Publications
0 Field Sites
Field Sites

Project Progress

Global measurements by the Mars Odyssey GRS suggest that bulk silicate Mars has chondritic K/Cl, reinforcing the idea that Mars is enriched in moderately-volatile elements compared to Earth, and possibly in water and other volatiles. Data from Martian meteorites also indicates that the Cl/Br ratio is chondritic, implying that Mars also contains chondritic relative abundances or of even highly volatile elements such as Br. Overall, Mars appears to be similar in composition to CM chondrites. It is not clear if Mars is similarly enriched in water as CM chondrites.

    Jeff Taylor
    Unspecified Role

    Objective 1.1
    Formation and evolution of habitable planets.

    Objective 2.1
    Mars exploration.