1. Correlation of Jurassic San Rafael Group and associated rocks from Slick Rock to La Sal Creek in southwestern Colorado [cartographic material] Yale Public content 1996. 2002-06-01T04:00:00Z. 2016-07-20T21:24:09Z. Geological Survey (U.S.). U.S. Geological Survey ; For sale by Information Services. English. cartographic image. Public. Colorado, San Miguel County, and San Miguel County. Jurassic.