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Formation of Jarosite in the Marwrth Vallis Region of Mars by Weathering Within Paleo-Ice DepositsHere we report new detections of jarosite in the Mawrth Vallis region of Mars. These newly recognized deposits expand the known occurrences of sulfates [1-2] in the region and further expand the already considerable geologic-mineralogic diversity of the Mawrth Vallis area [3-6]. The occurrence of sulfates such as jarosite in geologic contact with thick deposits of phyllosilicates in the Mawrth Vallis area is a relatively rare case on Mars where the enigmatic transition from an early phyllosilicateforming era to a younger sulfate-forming era [7] can be explored. We propose an ice-weathering model which can potentially explain the formation of jarosite-silicakaolinite within acidic ice deposits.
Document ID
20110007953
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Michalski, J. R. (Lunar and Planetary Inst. Houston, TX, United States)
Niles, Paul B. (NASA Johnson Space Center Houston, TX, United States)
Date Acquired
August 25, 2013
Publication Date
March 7, 2011
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
JSC-CN-22894
Meeting Information
Meeting: 42nd Lunar and Planetary Science Conference
Location: The Woodlands, TX
Country: United States
Start Date: March 7, 2011
End Date: March 11, 2011
Sponsors: Lunar and Planetary Inst.
Distribution Limits
Public
Copyright
Public Use Permitted.

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