Lithology, cuttings hyperspectral interpretation, side-wall core cuttings interpretation, spectral scalars, and XRD mineral percentage in the pre-Miocene section of Fallon FORGE well 21-31. For the SWIR and LWIR mineral logs, spectra from each sample interval were interpreted for dominant mineralogy, and plotted as a percent of the sample area with that mineral end-member spectra versus depth. Scalars were calculated on hull corrected data for the entire sample image, and the average value for each sample is plotted above. For “Illite Maturity”, shaded areas represent samples where the depth of the 2200 nm Al OH feature is greater than or equal to the depth of the 1900 nm H2O feature, meaning illite and/or muscovite likely predominate over smectite. For “Wavelength of 2200 nm feature”, shaded areas represent more phengitic illite/mica composition, and non-shaded regions represent more muscovitic compositions. “Depth of 1900 nm feature” is related to relative hydrated clay (such as smectite and illite) abundance. Figure from Kraal et al., 2021.