The Geology of the San Juans

The San Juan Mountains, located in southwestern Colorado and north central New Mexico, represent a varied landscape comprised not only of mountains, but of canyons, mesas, plateaus, plains, and valleys. The sheer variety of landforms makes the San Juan Mountains a veritable classroom for the student of geomorphology. One explanation for the large diversity of landscapes is that the San Juan Mountains straddle two major physiographic provinces, the Southern Rocky Mountains and the Colorado Plateau.
Origin of the Landscapes of the San Juan Mountains
	An introduction to the geology of the San Juan Mountains summarizing the major geological events that formed the present day mountains. Written by Rob Blair, Professor Emeritus in Geology, Fort Lewis College (used by permission from The Western San Juan Mountains: Their Geology, Ecology & Human History).
Relevant Geology-related links
	Numerous links to geology related web resources