Trace element geochemistry (Li, Ba, Sr, and Rb) usingCuriosity's ChemCam: Early results for Gale crater from Bradbury Landing Site to Rocknest
| Autor: | Ryan B. Anderson, Olivier Forni, Ann Ollila, Penelope L. King, Noureddine Melikechi, Josh Williams, B. L. Barraclough, Scott M. McLennan, M. Darby Dyar, Benton C. Clark, Dorothea Delapp, Jérémie Lasue, Eric Lewin, Anya Rosen-Gooding, Horton E. Newsom, Olivier Gasnault, J. G. Blank, John Campbell, John Bridges, Nina Lanza, Sylvestre Maurice, R. L. Tokar, Violaine Sautter, Nicolas Mangold, Agnes Cousin, Cécile Fabre, Pierre-Yves Meslin, S. Johnstone, Roger C. Wiens, Samuel M. Clegg, G. M. Perrett, D. T. Vaniman |
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| Rok vydání: | 2014 |
| Předmět: |
010504 meteorology & atmospheric sciences
Trace element Geochemistry Mineralogy Mars Exploration Program 010502 geochemistry & geophysics Feldspar 01 natural sciences Mars rover Geophysics Bradbury Landing 13. Climate action Space and Planetary Science Geochemistry and Petrology visual_art Rocknest Earth and Planetary Sciences (miscellaneous) visual_art.visual_art_medium Igneous differentiation Laser-induced breakdown spectroscopy Geology 0105 earth and related environmental sciences |
| Zdroj: | Journal of Geophysical Research: Planets. 119:255-285 |
| ISSN: | 2169-9097 |
| DOI: | 10.1002/2013je004517 |
| Popis: | The ChemCam instrument package on the Mars rover, Curiosity, provides new capabilities to probe the abundances of certain trace elements in the rocks and soils on Mars using the laser-induced breakdown spectroscopy technique. We focus on detecting and quantifying Li, Ba, Rb, and Sr in targets analyzed during the first 100 sols, from Bradbury Landing Site to Rocknest. Univariate peak area models and multivariate partial least squares models are presented. Li, detected for the first time directly on Mars, is generally low ( 100 ppm and >1000 ppm, respectively. These analysis locations tend to have high Si and alkali abundances, consistent with a feldspar composition. Together, these trace element observations provide possible evidence of magma differentiation and aqueous alteration. |
| Databáze: | OpenAIRE |
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