Fig. 1: Methods demonstration.

Workflow for measuring layer thicknesses. (Top) Images and DEMs are obtained from the locations marked in the map (black markers) (Fig. S1), with black polygons outlining the extent of the targeted sedimentary deposits⁵³. (Middle) Sections of continuous layering are identified and traced directly onto the images. Bedding plane orientations are obtained using the layer traces and the corresponding topography. Dip corrected layer thicknesses are obtained for each layer section using the mean layer orientation for the different layer packages (N:3-11). (Bottom) Layer thicknesses are reported as the mean thickness for each package, with the uncertainty quantified using the thinnest and thickest of the individual layer thicknesses.