The Distribution of Possible Hydrovolcanic Features in the Vicinity of Gusev Crater, Mars

Details The Distribution of Possible Hydrovolcanic Features in the Vicinity of Gusev Crater, Mars The Distribution of Possible Hydrovolcanic Features in the Vicinity of Gusev Crater, Mars

Oct 2010

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2010dps....42.3023b&link_type=abstract

American Astronomical Society, DPS meeting #42, #30.23; Bulletin of the American Astronomical Society, Vol. 42, p.1032

Astronomy and Astrophysics

Astronomy

Scientific paper

The Mars Exploration Rover Spirit landed in Gusev Crater, Mars in 2004. For the past four years of its mission, Spirit has been exploring the vicinity of Home Plate, a plateau of layered rocks interpreted to be a pyroclastic deposit caused by the explosive interaction of magma with ground water or ice [1]. Thus, the origin of Home Plate and the regional distribution of similar features have implications for the history of water at Gusev Crater. To test the hypothesis that hydrovolcanic activity may have been widespread throughout the region, we have performed a survey of images from the HiRISE and CTX cameras onboard the Mars Reconnaissance Orbiter (MRO), and from the MOC camera onboard the Mars Global Surveyor (MGS) spacecraft. We have mapped the distribution of geomorphic structures resembling Home Plate as a means of indicating locations of potential hydrovolcanic activity. We have also searched for features indicative of ice-rich terrain, such as precipitous boundaries and columnar jointing in the Gusev plains lavas, and hummocky terrain. In this work we present a map of these geomorphic features that indicates potential hydrovolcanic activity in several distinct locations within Gusev Crater, notably to the west and southeast of the Columbia Hills. [1] Squyres, S. W., et al. (2007), Science 316, 738-742.

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