The Pennsylvanian (Atokan) age Pinkerton Trail Formation of the eastern Paradox Basin (SW Colorado) displays an uncommon stratigraphic signature that is composed of subtidal carbonate sediment packages punctuated by coal layers, reflecting large scale sea level change. These high amplitude relative sea level changes are attributed to combined glacial eustasy and rapid tectonic subsidence on the complexly faulted basin margin during the second order...