GEOLOGIC COMPILATION FOR THE SOUTHWESTERN BASIN AND RANGE AND NORTHERN MOJAVE DESERT

Over the last 10 years there has been a large amount of new geologic mapping in the southwestern part of the Basin and Range Province and northern Mojave Desert. We have been involved in compiling this mapping. Compilation took place in two steps. The first step was converting maps for individual study areas into GIS format at the scale presented by the mapper (typically 1:12,000). All pertinent geologic attributes were added at this time. Maps cover many areas south of the Garlock fault including the Shadow Mountains, Kramer Hills, Hinkley Hills, Iron Mountain, Waterman Hills, Mitchel Range, Cronese Hills, Alvord Mountain, The Buttes, Fremont Peak, and various areas on Fort Irwin. North of the Garlock fault maps were compiled for the Coso Range, southern Slate Range, southern Panamint Mountains, and the Quail Mountains. In addition, we digitized and attributed the California Division of Mines and Geology 1:250,000 series maps (CDMG) for the area from about 34º30' N to 36º30' N, and 116ºW to 118ºW (N half of San Bernardino, Trona, and S half of Death Valley sheets). The second step was simplifying each of the detailed maps and merging them with the CDMG maps to a common scale of 1:250,000. All of the geologic maps will be presented. In addition, details of the conversion process and the GIS data model will be given.