Map and Data for Quaternary Faults in West Texas and Adjacent Parts of Mexico

The "World Map of Major Active Faults" Project is compiling a series of digital maps for the United States and other countries that show the locations, ages, and activity rates of major earthquake-related features such as faults and fault-related folds; the companion database includes published information on these seismogenic features. This effort is sponsored by International Lithosphere Program (ILP) Project 11-2 and funded by the Earthquake Hazards Reduction Program (EHRP) through the U.S. Geological Survey. The maps and accompanying databases represent a key contribution to the new Global Seismic Hazards Assessment Program (ILP Project II-0) for the International Decade for Natural Disaster Reduction. This compilation, which describes surface faulting in West Texas and adjacent parts of Mexico, is the first of many similar State and regional compilations that are planned for the project. This compilation is presented as a traditional map product and printed catalog of data; however both should be available in digital form in the future. The database provides referenced data on a variety of geographic, geologic, and paleoseismologic parameters. The fault data were compiled by the senior authors (Edward W. Collins and Jay A. Raney, Texas Bureau of Economic Geology) as part of ongoing studies of active faulting in the West Texas area and adjacent parts of Mexico. The U.S. Geological Survey authors are responsible for organizing and integrating State and regional products under the national project, including the coordination and oversight of contributions from individuals and groups (Michael N. Machette, Project Chief), database design and management (Kathleen M. Haller), and digitization and manipulation of map data (Richard L. Dart).