Other
Scientific paper
Dec 2009
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2009jgre..11412001k&link_type=abstract
Journal of Geophysical Research, Volume 114, Issue E12, CiteID E12001
Other
7
Planetary Sciences: Solid Surface Planets: Surface Materials And Properties, Planetary Sciences: Solid Surface Planets: Instruments And Techniques, Planetary Sciences: Solid Surface Planets: Erosion And Weathering, Planetary Sciences: Solid Surface Planets: Remote Sensing, Planetary Sciences: Solid Surface Planets: Volcanism (6063, 8148, 8450)
Scientific paper
The Mars Odyssey Gamma Ray Spectrometer Suite has yielded global chemical information for Mars. In this work, we establish regions of unusual chemical composition relative to average Mars primarily on the basis of Ca, Cl, Fe, H, K, Si, and Th. Using data from Mars Odyssey; the Mars Exploration Rovers; the Mars Reconnaissance Orbiter Imaging; and 3.5 cm and 1.35 cm radar observations from Earth, we examine a chemically striking ≈2.E6 km2 region and find it to overlap significantly with a radar Stealth region on Mars. It is remarkably enriched in Cl and depleted in Fe and Si (along with minor variations in H, K, and Th) relative to average Mars. Surface dust observed at the two rover sites mixed with and indurated by Ca/Mg-bearing sulfate salts would be a reasonable chemical and physical analog to meter-scale depths. We describe potential scenarios that may have contributed to the unique properties of this region. The bulk dust component may be an air fall deposit of compositionally uniform dust as observed in situ. Hydrothermal acid fog reactions on the flanks of nearby volcanoes may have generated sulfates with subsequent deflation and transport. Alternatively, sulfates may have been produced by low-temperature, regional-scale activity of ground ice-driven brine and/or regional-scale deposition of acidified H2O snowfall.
Boynton William
Dohm James M.
El Maarry Ramy M.
Gasnault Olivier
Jeffrey Taylor G.
No associations
LandOfFree
Chemically striking regions on Mars and Stealth revisited does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Chemically striking regions on Mars and Stealth revisited, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Chemically striking regions on Mars and Stealth revisited will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-1697219