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dc.contributor.authorPearthree, P.A.
dc.contributor.authorYouberg, A.
dc.date.accessioned2018-11-10T03:01:57Z
dc.date.available2018-11-10T03:01:57Z
dc.date.issued2000-10-01
dc.identifier.citationPearthree, P.A., and Youberg, A., 2000, Surficial Geologic Map and Geologic Hazards of the Green Valley-Sahuarita Area, Pima County, Arizona: Arizona Geological Survey Digital Geologic Map DGM-03, version 1.1, map scale 1:24,000, 23 p. and 2 map sheets.
dc.identifier.urihttp://hdl.handle.net/10150/630859
dc.descriptionThis report and accompanying maps describe the surficial geology, geomorphology, and geologic hazards of the rapidly developing Green Valley – Sahuarita area on the southern fringe of the Tucson metropolitan area. The mapping covers the Esperanza Mill, Green Valley, Sahuarita, and Twin Buttes 7 1/2’ quadrangles (Figure 1). Most of the area is in unincorporated Pima County, but it includes the small but rapidly growing Town of Sahuarita. The whole map area is within the drainage basin of the Santa Cruz River, a major, north-flowing regional drainage that roughly bisects the four quadrangles. These maps cover most of the Santa Cruz Valley (this area can also be considered the southern part of the Tucson basin) between the Santa Rita Mountains on the east to the Sierrita Mountains on the west. There are several potentially conflicting land use issues in the area covered by these maps. It encompasses the southern fringe of the Tucson metropolitan area, which is experiencing rapid development and population growth. The western part of the map area includes several large open-pit copper mines that have been active for several decades. Much of the eastern part of map area is within the Santa Rita Experimental Range and Wildlife Area, a government-owned preserve that is undeveloped and will remain that way for the foreseeable future. Intense urban development has occurred and is continuing in the Green Valley area. Major developments have been proposed for the Canoa Ranch area along the Santa Cruz River. Rapid development is beginning in Sahuarita, which is on the suburban fringe of the Tucson metropolitan area. This report is intended to enhance our understanding of the surficial geology of the Green Valley – Sahuarita area and to aid in assessing and understanding geologic hazards in this area. This new mapping complements previously published mapping that focused on the bedrock in the area (Drewes, 1971; Cooper, 1973). Map focus is Holocene - Pleistocene alluvium and river deposits. Bedrock is undifferentiated. (map scale:1:24,000; projection: UTM Zone 12, NAD83).
dc.language.isoen
dc.publisherArizona Geological Survey (Tucson, AZ)
dc.relation.ispartofseriesDGM-03
dc.relation.urlhttp://repository.azgs.az.gov/uri_gin/azgs/dlio/463
dc.rightsArizona Geological Survey. All rights reserved.
dc.subjectArizona Geological Survey Digital Geologic Maps
dc.subjectPleistocene
dc.subjectHolocene
dc.subjectSierrita Mountains
dc.subjectSanta Cruz River
dc.subjectTwin Buttes
dc.subjectEsperanza Mill
dc.subjectSahuarita
dc.subjectGreen Valley
dc.subjectSanta Rita Experimental Range and Wildlife Area
dc.subjectundifferentiated bedrock
dc.subjectriver deposits
dc.subjectgeomorphology
dc.subjectgeologic hazards
dc.subjectland use
dc.subjectQuaternary
dc.subjectsurficial mapping
dc.titleSurficial Geologic Map and Geologic Hazards of the Green Valley-Sahuarita Area, Pima County, Arizona, v. 1.1
csdgm.bounding.west-111.16
csdgm.bounding.east-110.808
csdgm.bounding.north32.1365
csdgm.bounding.south31.7636
dc.description.noteAlthough GIS data has been processed successfully on a computer system at the Arizona Geological Survey, no warranty expresses or implied is made regarding the accuracy or utility of the data on any system or for general or scientific purposes, nor shall the act of distribution constitute any such warranty. This disclaimer applies both to individual use of the data and aggregate use with other data. It is strongly recommended that these data are directly acquired from the Arizona Geological Survey, and not indirectly through other sources which may have changed the data in some way. It is also strongly recommended that careful attention be paid to the contents of the metadata file associated with these data. The Arizona Geological Survey shall not be held liable for improper or incorrect use of the data described and/or contained herein. Not to be reproduced for commercial purposes. Arizona Geological Survey all rights reserved. DGM-03 Report supercedes OFR-00-13 of the same title; geologic mapping within Twin Buttes and Esperanza Mill 7.5' quadrangle extents superceded by the Geologic Map of the Twin Buttes 7.5' Quadrangle, Pima County, Arizona (DGM-31) and Geologic Map of the Esperanza Mill 7.5' Quadrangle, Pima County, Arizona (DGM-33); refer to ArcGIS file geodatabase metadata for additional lineage associated with data processing.
dc.description.collectioninformationDocuments 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 azgs-info@email.arizona.edu.
refterms.dateFOA2018-11-10T03:01:57Z


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