DOI: 10.1002/2013GL058649
论文题名: Thermal alteration: A possible reason for the inconsistency between OMEGA/CRISM and TES detections of phyllosilicates on Mars?
作者: Che C. ; Glotch T.D.
刊名: Geophysical Research Letters
ISSN: 0094-10453
EISSN: 1944-10184
出版年: 2014
卷: 41, 期: 2 起始页码: 321
结束页码: 327
语种: 英语
英文关键词: CRISM
; dehydration
; Mars
; phyllosilicates
; spectroscopy
; TES
Scopus关键词: Dehydration
; Earth sciences
; Geophysics
; Spectroscopy
; CRISM
; Laboratory analysis
; Mars
; Mineral assemblage
; phyllosilicates
; Spectroscopic signatures
; TES
; Thermal alteration
; Silicates
; amorphous medium
; chemical weathering
; dehydration
; heat shock
; heat source
; high temperature
; laboratory method
; Mars
; phyllosilicate
; spectroscopy
; thermal alteration
; wavelength
英文摘要: Previous laboratory analyses have shown that high temperatures can modify the crystal structures of some phyllosilicates in such a way that their spectroscopic signatures appear different from various wavelength perspectives. This may be the case in the Nili Fossae region of Mars, where our analyses indicate that thermally altered (∼400°C) Fe-rich smectites might be possible mineral analogs to the phyllosilicate-bearing units in addition to mineral assemblages formed by Fe/Mg smectite and amorphous weathering products. We suggest that thermal alteration of phyllosilicates induced by impact shock or other heat sources might be a widespread process throughout Martian history. The mixing of altered and unaltered phyllosilicates might be partially responsible for the apparent disconnect between VNIR and TIR observations of Fe/Mg smectite-bearing surfaces on Mars. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84893195860&doi=10.1002%2f2013GL058649&partnerID=40&md5=000d1217ecc34c0f94f873cc5768939b
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7717
Appears in Collections: 气候减缓与适应
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作者单位: Department of Geosciences, Stony Brook University, Stony Brook, NY, United States
Recommended Citation:
Che C.,Glotch T.D.. Thermal alteration: A possible reason for the inconsistency between OMEGA/CRISM and TES detections of phyllosilicates on Mars?[J]. Geophysical Research Letters,2014-01-01,41(2).