The STATEMAP Program has facilitated a tremendous amount of geologic mapping in the past 25 years, but it imposes a rather relentless schedule on state geological surveys. STATEMAP is part of the National Cooperative Geologic Mapping Program administered by the US Geological Survey (USGS). Federal funding is allocated annually, beginning in September for the AZGS, and is matched dollar-for-dollar by the state; we typically agree to deliver 4 or 5, 1:24,000-scale geologic maps at the end of the funding cycle. These products must be delivered to the USGS in fairly presentable draft form at the end of the contract period, or funding is not released for the following year.

This index provides a list of mines within each mineral district as defined in Arizona Bureau of Geology and Mineral Technology- Map 18 and Bulletln 194 (Kelth and others, 1983a,b). In a m1neral-district classification known metallic mineral occurrences are grouped according to geologic and metallogenic criteria rather than the geographic associations used in the traditional mining-district approach. Ideally, a mineral district should consist of mineral occurrences that have a common origin. A mineral-district classification is especially useful for understanding the geologic setting of mineralization and the distribution of known mineral occurrences with similar geology. A mineral-district map, however, is not a map of mineral potential. Although understanding the distribution of known mineral deposits is essential in evaluating mineral potential, many other geologic factors must also be considered (Fellows, 1984).

This is the 4th and latest compilation of the Geologic Map of Arizona published in 2000 at 1:1,000,000 map scale. Released online on 19 January 2017

Geologic map of Arizona ca. 1988. This is the 3rd statewide geologic map of Arizona published by the Arizona Geological Survey or its predecessors.

The Mount Nutt 7 ½' Quadrangle is located in the Black Mountains just west of Oatman, AZ in Mohave County, western Arizona. The Quadrangle encompasses portions of the Mount Nutt and Warm Springs Wilderness areas and includes the east flank of the northern Black Mountains and the piedmont that extends eastward from the foot of the range into Golden Valley. Geologic mapping was done under the joint State-Federal STATEMAP program, as specified in the National Geologic Mapping Act of 1992, and was jointly funded by the Arizona Geological Survey and the U.S. Geological Survey under STATEMAP assistance award #G14AC00424. Mapping was compiled digitally using ESRI ArcGIS software.

The Arizona Geological Survey (AZGS) has been compiling a statewide landslide database for hazard mitigation planning. The AZ Statewide Landslide Inventory Database (AZSLID) contains landslide and mass movement data from published maps and reports as well as newly documented slides identified while building the database. The proximity of landslides to critical infrastructure, utilities, and populated areas is important information not easily accessible prior to creation of the database. AZSLID will be useful to state, local, county, and tribal governments for hazard mitigation and planning purposes.

This report is a nontechnical swnmary of the energy resources of Arizona intended to accompany the Energy Resources Map of Arizona. Arizona is endowed with a variety of energy resources and potential resources; each is given its own chapter in this report. Chapters are arranged according to the relative importance of each resource to the State, with the most important described first. Coal is discussed first; the next three chapters address hydroelectric power, uranium, and petroleum, the other important traditional energy resources. Geothennal, solar, wind, and biomass energy, usually considered' 'alternative" energy resources, are treated in the last four chapters of this report. They have considerable development potential, but as of 1991 have not been exploited on a significant scale.

The districts delineated in this report are based on Metallic Mineral Districts of Arizona (Ari-zona Geological Survey Map 18) [Keith et al.,1983a], which served as a starting point for this da-tabase. The mineral districts attempt to identify mineralized areas based on geologic character and age of mineralization. This database is an attempt to assign accurate spatial locations to the dis-tricts shown on the Keith et al. [1983a] map, and to provide more in depth information on the geology of the districts. The districts are classified according to the system elaborated in Keith et al. [1983b], a report which was published in conjunction with the Keith et al. [1983a] map. This report discusses definition of the districts, and has a summary of metal production reported to the U.S. Bureau of Mines, and in published sources available as of 1981 [Keith et al., 1983b]. The production data included in the table DistrictDataAZMIN are imported from a previous Arizona Geological Survey database [Welty et al., 1989] that contained the production data from the printed publication [Keith et al., 1983b]. Minor discrepancies with data reported in Keith et al [1983b] are the result of edits to that data made during final production of the published report and not updated in the database version that has been preserved, or are the result of edits, correc-tions and additions that have been made to this database since publication of the original produc-tion summary.

This past year marked a major milestone for AZGS. The 4-year, $22 million National Geothermal Data System (NGDS) project formally ended on December 1, 2014, and with it a special period in AZGS history. This was the largest, most ambitious project we have ever undertaken. We had 45 subcontractors in 45 states and a number of other collaborators and contributors. NGDS is now operational, with 60+ data providers sharing more than 10 million records from all 50 states. We are deploying that same open source, open access data integration framework for a variety of other applications, not only in AZGS but nationally and internationally. This has been a great effort, for the Survey, both technically and financially. The project began just as the recession budget cuts slashed state support, so that today, AZGS is 85–90% funded with grant funds. State funds have been providing less than 10% of our annual budget. The NGDS project allowed the Survey to not only survive but thrive during a period of economic challenges.

The map encompasses a drainage divide that separates the Colorado River catchment from the Red Lake Playa catchment. Valleys consist of gently sloping piedmonts covered by alluvial fan and terrace deposits, and nearly flat valley floors occupied by ephemeral washes, floodplains and low terraces.