“…The cliffs reveal Campanian strata of the Mesaverde Group from broadly west to east in both depositional dip and strike sections in two dimensions, and abundant side canyons within them provide local three dimensional control. The stratigraphy of the Book Cliffs has been intensely studied and consists of eastward thinning siliciclastic wedges of non-marine to marginal-marine deposits that interfinger with fully-marine offshore shale (Young, 1955;Fisher et al, 1960). These deposits have been interpreted to record relative sea-level fluctuations in a predominantly regressive succession during the Late Cretaceous attributed to cyclical variations in, and complex interplay among, local tectonism, sediment supply, and eustatic sea-level position (e.g.…”