Figure 15.

Quantification of absorption band depths and minimum wavelength positions from within and outside of Jezero crater. (a) Measured CRISM band parameters BD2290 and BD2500_2 (Viviano‐Beck et al., 2014) for the spectra displayed in Figure 14f. Carbonate band depths in Jezero crater are within the range of carbonate band depths extracted from outside of Jezero crater. (b) Measured absorption minima wavelength positions for the spectra displayed in Figure 14f compared to those of Ca‐carbonate, Mg‐carbonate, Fe‐carbonate, (Fe, Mg)‐carbonate, (Ca, Mg)‐carbonate, and magnesite‐nontronite‐olivine mixtures measured in RELAB. The labeled uncertainties correspond to the spectral sampling of each spectrometer (6.55 nm for CRISM, 5 nm for these RELAB spectra). Estimated chemistries for carbonates within and outside of Jezero crater range from Mg‐rich carbonate to (Fe, Mg)‐rich carbonates based on these results.