作者
V Sautter, C Fabre, O Forni, MJ Toplis, A Cousin, AM Ollila, PY Meslin, S Maurice, RC Wiens, David Baratoux, N Mangold, S Le Mouélic, O Gasnault, G Berger, J Lasue, RA Anderson, E Lewin, M Schmidt, D Dyar, BL Ehlmann, J Bridges, B Clark, P Pinet
发表日期
2014/1
期刊
Journal of Geophysical Research: Planets
卷号
119
期号
1
页码范围
30-46
简介
Textural and compositional analyses using Chemistry Camera (ChemCam) remote microimager and laser‐induced breakdown spectroscopy (LIBS) have been performed on five float rocks and coarse gravels along the first 100 m of the Curiosity traverse at Bradbury Rise. ChemCam, the first LIBS instrument sent to another planet, offers the opportunity to assess mineralogic diversity at grain‐size scales (~ 100 µm) and, from this, lithologic diversity. Depth profiling indicates that targets are relatively free of surface coatings. One type of igneous rock is volcanic and includes both aphanitic (Coronation) and porphyritic (Mara) samples. The porphyritic sample shows dark grains that are likely pyroxene megacrysts in a fine‐grained mesostasis containing andesine needles. Both types have magnesium‐poor basaltic compositions and in this respect are similar to the evolved Jake Matijevic rock analyzed further along the …
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V Sautter, C Fabre, O Forni, MJ Toplis, A Cousin… - Journal of Geophysical Research: Planets, 2014