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AGU: Geophysical Research Letters

 

Keywords

  • Mars
  • silica
  • Hellas Basin

Index Terms

  • Planetary Sciences: Solar System Objects: Mars
  • Planetary Sciences: Solid Surface Planets: Composition
  • Planetary Sciences: Solid Surface Planets: Remote sensing
  • Planetary Sciences: Solid Surface Planets: Surface materials and properties
  • Planetary Sciences: Solid Surface Planets: Instruments and techniques

Abstract

High-silica deposits of an aqueous origin in western Hellas Basin, Mars

Joshua L. Bandfield

Department of Earth and Space Sciences, University of Washington, Seattle, Washington, USA

Data from the Thermal Emission Spectrometer and the Thermal Emission Imaging System have been used to identify isolated high silica surfaces in western Hellas Basin. Deconvolution results indicate that the surfaces are composed of nearly 80% high silica phases (amorphous silica, phyllosilicates, or zeolites). The deposits may be derived from alcoves in the terrain immediately to the north. The high silica deposits are an additional indicator of a variety of past aqueous processes on Mars.

Received 3 March 2008; accepted 20 May 2008; published 24 June 2008.

Citation: Bandfield, J. L. (2008), High-silica deposits of an aqueous origin in western Hellas Basin, Mars, Geophys. Res. Lett., 35, L12205, doi:10.1029/2008GL033807.

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