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Bruce Murray Space Image Library

Clay mineral locations at the rim of Endeavour crater mapped by CRISM

Clay mineral locations at the rim of Endeavour crater mapped by CRISM
Clay mineral locations at the rim of Endeavour crater mapped by CRISM Scientists using CRISM on Mars Reconnaissance Orbiter have mapped locations where CRISM spectral data contain hints of the presence of different kinds of smectite, which is a clay mineral. The hints of clay are what brought Opportunity to Endeavour. The yellow line shows Curiosity's path up to about sol 3654 (5 May 2014). NASA / JPL-Caltech / University of Arizona / map by Emily Lakdawalla after maps by Ray Arvidson, WUSTL

Here are the two Arvidson et al. maps on which this map is based:

Smectites located at Cape York
Smectites located at Cape York The red pixels in this image denote pixels where CRISM spectra contain features diagnostic of the presence of a clay mineral called smectite.Image: NASA / JPL / UA / courtesy of Ray Arvidson
Clays at Murray Ridge and Cape Tribulation
Clays at Murray Ridge and Cape Tribulation The colored pixels in this image denote pixels where CRISM spectra contain features diagnostic of the presence of a clay mineral called smectite.Image: NASA / JPL / UA / APL / courtesy of Ray Arvidson

And a version of the above image with the rover's traverse marked:

Clay mineral locations at the rim of Endeavour crater mapped by CRISM with optional rover traverse
Clay mineral locations at the rim of Endeavour crater mapped by CRISM with optional rover traverse The colored pixels in this image denote pixels where CRISM spectra contain features diagnostic of the presence of a clay mineral called smectite. The yellow line shows Curiosity's path up to about sol 3654 (May 5, 2014).Image: NASA / JPL / UA / APL / map by Emily Lakdawalla after maps by Ray Arvidson