ChemCam results from the Shaler Outcrop in Gale Crater, Mars

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Abstract

The "Shaler" outcrop in Gale crater is approximately 0.7 m thick and >20 m long, and exhibits multiple well-exposed platy and cross-stratified facies [1] interpreted to be primarily fluvial sandstone deposits. The outcrop is a part of the upper Glenelg member in the Yellowknife Bay (YKB) stratigraphic section [2]. Curiosity first encountered the "Shaler" outcrop on sol 121 of the mission, and returned to the outcrop on sols 309- 324.
The rugged nature of the outcrop and short time available for analysis limited opportunities for contact science, but ChemCam’s ability to remotely collect compositional and textural observations resulted in a large data set from Shaler. ChemCam conducted analyses of 29 non-soil targets at Shaler, 26 of which used laser-induced breakdown spectroscopy (LIBS) for a total of 9,180 spectra. Three observations used only the remote micro-imager (RMI). Each of the 26 LIBS targets were analyzed at between 5 and 25 points, providing a measure of the target homogeneity and in some cases transecting fine strata. 

Additional publication details

Publication type Conference Paper
Publication Subtype Conference Paper
Title ChemCam results from the Shaler Outcrop in Gale Crater, Mars
Year Published 2014
Language English
Publisher Lunar and Planetary Institute
Contributing office(s) Astrogeology Science Center
Description 2 p.
Larger Work Type Book
Larger Work Subtype Conference publication
Larger Work Title 45th Lunar and Planetary Science Conference
Other Geospatial Gale crater, Mars