In:
Geophysical Research Letters, American Geophysical Union (AGU), Vol. 44, No. 13 ( 2017-07-16), p. 6562-6569
Abstract:
One of the most significant achievements in planetary sciences in the last 20 years has been the identification and mapping of Martian surface mineralogy by infrared remote sensing. Of major interest is the characterization of clay minerals that formed in ancient habitable environments on Mars 〉 3.5 Ga ago. Because most of these deposits are extremely ancient, they exist within crustal materials that have experienced numerous meteor impacts and therefore could have been affected by heat and pressure associated with those events. The paper contains three main points: (1) the main features that are used to interpret clay mineralogy from infrared data remain intact despite shock metamorphic effects up to pressures of ~40 GPa, (2) shocked clays display some key features that can be used to identify effects of shock remotely, and (3) we describe some of the global‐scale spectral biases in interpretation of clays on Mars that are likely to arise from shock effects and we show some concrete examples of shocked Martian clays in certain cases. We believe that this would be the first publication of clear evidence for shocked minerals detected by remote sensing on any planet.
Type of Medium:
Online Resource
ISSN:
0094-8276
,
1944-8007
DOI:
10.1002/2017GL073423
Language:
English
Publisher:
American Geophysical Union (AGU)
Publication Date:
2017
detail.hit.zdb_id:
2021599-X
detail.hit.zdb_id:
7403-2
SSG:
16,13
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