NASA Logo

NTRS

NTRS - NASA Technical Reports Server

Collections About News Help Login
Back to Results
Acid-Sulfate Weathering Environment at Shergottite Provenance on MarsIn some impact melt (IM) glasses in the shergottites such as EET79001, Shergotty and Tissint, recently showed that secondary mineral assemblages having large sulfur excesses cannot be produced in-situ by impact shock melting of the host rock constituents. Instead, these putative secondary minerals inferred to be present in IM glasses were produced somewhere else in the shergottite source region and were subsequently mobilized into the host rock voids (by lava erosion or aolian activity) prior to impact ejection. In this abstract, we examine the aqueous conditions (pH and water/rock ratios) under which the acid sulfate solutions could have interacted with the primary minerals in the basaltic rocks and precipitated the secondary minerals such as Fe-sulfates in some cases and Ca- and Al-sulfates in other cases under favorable conditions at the shergottite provenance on Mars.
Document ID
20190001834
Acquisition Source
Johnson Space Center
Document Type
Conference Paper
Authors
Rao, M. N. (Jacobs Technology, Inc. Houston, TX, United States)
Nyquist, L. E. (NASA JSC Emeritus Program Houston, TX, United States)
Ross, D. K. (Jacobs Technologies Engineering Science Contract Group Houston, TX, United States)
Wentworth, S. J. (Jacobs Engineering Group, Inc. Houston, TX, United States)
Date Acquired
March 25, 2019
Publication Date
March 18, 2019
Subject Category
Lunar And Planetary Science And Exploration
Report/Patent Number
JSC-E-DAA-TN65247
LPI Contrib. No. 2132
Funding Number(s)
CONTRACT_GRANT: NNJ13HA01C
Distribution Limits
Public
Copyright
Public Use Permitted.

Related Records

There are no records associated with this record.
No Preview Available