Geologic Map Database for Aggregate Resource Assessment in the Phoenix Metropolitan Area and Surrounding Regions, Arizona
KeywordsArizona Geological Survey Digital Information
Valley of the Sun
MetadataShow full item record
CitationPearthree, P.A., Gootee, B.F., Richard, S.M. and Spencer, J.E., 2015, Geologic Map Database for Aggregate Resource Assessment in the Phoenix Metropolitan Area and Surrounding Regions, Arizona. Arizona Geological Survey Digital Information DI-43, 11 p., map sheet, Shapefiles, ArcGIS Map Packages, polygons and geologic features.
DescriptionThis geologic map database and report represent a new geologic map compilation of the four 1:100,000 scale geologic maps that encompass the Phoenix metropolitan area. This compilation includes new mapping of the deposits associated with the major river systems (Salt, Gila, Verde, Agua Fria, and Hassayampa) and their largest tributaries (New River, and Skunk, Cave and Queen Creeks). In addition, mapping of deposits of smaller tributaries was improved in many parts of the map area. We made minor revisions of existing bedrock mapping, primarily along boundaries between previous compilation maps, and merged similar bedrock units into a simplified set of units. The primary purpose of this compilation is to depict geologic units that have been and are being exploited for aggregate resources in a uniform and fairly simple manner. This supports efforts of local governments to include aggregate resources in their land management planning, as mandated by state law. These data should also serve as useful reconnaissance tools for aggregate producers when they evaluate potential future resources.
RightsArizona Geological Survey. All rights reserved.
Collection InformationDocuments in the AZGS Document Repository collection are made available by the Arizona Geological Survey (AZGS) and the University Libraries at the University of Arizona. For more information about items in this collection, please contact email@example.com.
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Showing items related by title, author, creator and subject.
Dynamic Management of a Surface and Groundwater System on Both Sides of the Lower Yellow RiverLingen, Carl; Buras, Nathan; Department of Hydrology & Water Resources, The University of Arizona (Department of Hydrology and Water Resources, University of Arizona (Tucson, AZ), 1987)This paper analyzes the management problem of the conjunctive use of surface and ground water in an irrigation system on both sides of the Lower Yellow River. For this purpose, a stochastic dynamic programming model is developed. In the model, the statistical characteristics of seasonal rainfall within 2 years are considered; groundwater level control is also emphasized in order to prevent soil salinity and waterlogging. Through computer calculations, optimal operation policies are obtained for efficient conjunctive use of surface and groundwater. These policies take into account the interactions between pumping groundwater by farmers, canal diversions by irrigation system managers, and the physical response of the stream- aquifer system, and minimize the total operation costs. In this paper, we take an irrigation district, the People's Victory Canal System, as an example to illustrate the development and solution of the model. At the same time, the effects of system parameters, including surface irrigation efficiency and rainfall recharge coefficient, on the optimal policies or total operation costs, are discussed. The analytical results in this example indicate that the variation in optimal operation costs caused by the proportion of rainfall infiltrated is small, but the effect of surface irrigation efficiency on the costs is significant. Hence, the surface irrigation efficiency must be increased as much as possible. Then, efficient conjunctive use of surface and groundwater can be attained with the optimal policies.
Alluvial cycles and early agricultural settlement phases in the Jordan ValleyMabry, Jonathan Blum; Olsen, John W.; Haynes, C. Vance, Jr.; Dever, William G. (The University of Arizona., 1992)The parallel development of archaeology and Quaternary geology in several regions of the world is reviewed, and common problems in dating and correlating alluvial sequences are discussed. Buried archaeological remains and radiometric dates provide a chronological framework for the sequence of Late Quaternary alluvial deposits in the central Jordan Rift. While previous studies emphasized a simple, two-stage model of Late Quaternary alluvial deposition, regional comparisons of the geomorphological contexts of archaeological sites of different ages indicate complex, multiple depositional and erosional cycles. These cycles were influenced by tectonism, climatic changes, human land use, and natural geomorphic thresholds, sometimes in combination. The stratigraphy and chronology of early agricultural settlements in the valley are summarized, and investigations at a protohistoric agricultural town are described. Major regional shifts in prehistoric and protohistoric patterns of agriculture and settlement are interpreted in terms of the impacts of changes in alluvial regimes. These correlations have implications for models of agricultural origins, and the stability and resilience of sedentary settlements in dry lands.