Figure 10. Portion of a Navcam mosaic taken on sol 3032 showing
mixed boulders and sands located just to the north of the Sands of
Forvie sand sheet. A MARDI image and Mastcam mosaic are also shown. The
locations of the APXS Limeyrat_offset bedrock and the Fleurac
observation is shown. Both the MARDI and Mastcam views show fragments of
bedrock incorporated in relatively dark sands. Image credit:
NASA/JPL-Caltech/MSSS.
The primary objective of paired measurements was to guard against APXS
placement uncertainty (e.g., VanBommel et al., 2016) and to acquire a
gradient in endmember (i.e., blocky material weathered from nearby
bedrock and sand blown in from the main SoF sand sheet) coverage
(Figures 10, 11).