1. Description and validation of an automated methodology for mapping mineralogy, vegetation, and hydrothermal alteration type from ASTER satellite imagery with examples from the San Juan Mountains, Colorado Author/Creator: Rockwell, Barnaby W. (Barnaby Whitson) Publication/Creation: Reston, VA : U.S. Dept. of the Interior, U.S. Geological Survey, 2012 Format: Map Access & Availability: Loading