AZGS staff prepare and provide geologic maps, reports, and related information to interested or concerned citizens, governmental agencies, businesses, legislators and committee staff, teachers, and students. Geologists map and describe bedrock and surficial materials; and metallic, nonmetallic, and energy resources. They also identify geologic processes that may be hazardous to the public or limiting to land and resource management (e.g. earthquakes, land subsidence and earth fissures, flooding). Staff conduct investigations, write reports and prepare maps that summarize the results, and make this and related information available to the public. In addition, they compile and maintain data files and computer databases; maintain a library that features the geology of Arizona; and preserve a repository of selected rock cuttings and cores.