• Publications
  • Influence
The Thermal Emission Imaging System (THEMIS) for the Mars 2001 Odyssey Mission
The Thermal Emission Imaging System (THEMIS) on 2001 Mars Odyssey will investigate the surface mineralogy and physical properties of Mars using multi-spectral thermal-infrared images in nine
Meteorites and the early solar system II
They range in size from microscopic particles to masses of many tons. The geologic diversity of asteroids and other rocky bodies of the solar system are displayed in the enormous variety of textures
In Situ Evidence for an Ancient Aqueous Environment at Meridiani Planum, Mars
The geologic record at Meridiani Planum suggests that conditions were suitable for biological activity for a period of time in martian history.
What we have learned about Mars from SNC meteorites
The SNC meteorites are thought to be igneous martian rocks, based on their young crystallization ages and a close match between the composition of gases implanted in them during shock and the
HED Meteorites and Their Relationship to the Geology of Vesta and the Dawn Mission
Howardite-eucrite-diogenite (HED) meteorites, thought to be derived from 4 Vesta, provide the best sampling available for any differentiated asteroid. However, deviations in oxygen isotopic
Elemental Composition of the Martian Crust
Spacecraft data suggest that martian meteorites are not representative of older, more voluminous crust and prompt questions about their use in defining diagnostic geochemical characteristics and in constraining mantle compositional models for Mars.
Petrogenesis of shergottite meteorites inferred from minor and trace element microdistributions
Abstract As an extension of our previous work on the lherzolitic shergottites (ALHA77005 and LEW88516), ion microprobe measurements of REEs and other selected trace and minor elements were made in
A coordinated spectral, mineralogical, and compositional study of ordinary chondrites
Abstract Mineral compositions and abundances derived from visible/near-infrared (VIS/NIR or VNIR) spectra are used to classify asteroids, identify meteorite parent bodies, and understand the
Fluid lava flows in Gusev crater, Mars
[1] Rocks on the floor of Gusev crater are basaltic in composition, as determined from measurements by the Mars Exploration Rover, Spirit. On the basis of compositional data, models of the basaltic
Dawn at Vesta: Testing the Protoplanetary Paradigm
Dawn's results confirm predictions that Vesta differentiated and support its identification as the parent body of the HEDs, and present the mineralogical characterization of Vesta, revealing that this asteroid underwent a complex magmatic evolution that led to a differentiated crust and mantle.