As there is no dormer on the roof, the ceilings slant downward on each side.
The cuesta would be straight from east and west if the slant of the strata were uniformly to the south; but the strata are somewhat warped, and hence the course of the cuesta is strongly convex to the north in the middle, gently convex to the south at either end.
It lies at the junction of the Great Plains - which in their upward slant to the westward attain an average elevation of about 4000 ft.
The Sierra Nevada may be described, in a very general way, as a great mountain block, largely composed of granite and deformed metamorphosed rocks, reduced to moderate relief in an earlier (Cretaceous and Tertiary?) cycle of erosion, sub-recently elevated with a slant to the west, and in this position sub-maturely dissected.
The quadrates slant obliquely forward and are attached directly to the proOtics, owing to the absence of squamosals.