Fig. 2. Changes in abundances of environmentally sensitive mineralogical components in mudstones along MSLs’ traverse.

Samples are arranged in stratigraphic order. Mineral abundances and associated 1σ errors shown for John Klein and Cumberland, Confidence Hills to Buckskin, and Oudam to Sebina are sourced from Morrison et al. (10), Rampe et al. (7), and Table 1, respectively.