Geologic Map of the Mount Fagan 7.5' Quadrangle, Eastern Pima County, Arizona, v. 2.0
Issue Date
2019Keywords
Arizona Geological Survey Digital Geologic MapsArizona
Pima County
Empire Mountains
Santa Rita Mountains
Tucson
Mount Fagan
Surficial geologic mapping
geologic hazards
PaleoproterozoicMesoproterozoicCambrianDevonianMississippianPennsylvanianPermianPaleozoicMesozoicTriassicJurassiccretaceousTertiaryQuaternaryPleistoceneHoloceneDavidson CanyonPantano BasinPinal SchistBolsa FormationAbrigo FormationMartin FormationEscabrosa FormationColina FormationEpitaph FormationHorquilla FormationmegabrecciaPantano FormationMount Fagan Cauldronsilicic volcanicsrhyoliteSalero FormationFort Crittenden FormationGardner Canyon FormationGlance ConglomerateLaramide orogenyBisbee Groupschistplutonscrystalline basementgeochronology
Metadata
Show full item recordCitation
Ferguson, C.A., Youberg, A., Gilbert, W.G., Orr, T.R., Richard, S.M., and Spencer, J.E., 2019, Geologic Map of the Mount Fagan 7.5' Quadrangle, Eastern Pima County, Arizona: Arizona Geological Survey Digital Geologic Map DGM-11, version 2.0, map scale 1:24,000, 36 p., 1 map sheet and metadata.Publisher
Arizona Geological Survey (Tucson, AZ)Description
The Mount Fagan quadrangle is located approximately 30 km southeast of downtown Tucson, and includes the northern terminus of two mountain ranges; of the Santa Rita Mountains in the center and southwest, and the Empire Mountains along the eastern boundary. The northern portion of the quadrangle consists of a gently north-sloping piedmont surface carved into Quaternary basin-fill deposits in the northwest and rolling hills of bedrock in the northeast (Figure 1). The area was mapped during October, 2000 through May, 2001 as part of a multiyear mapping program directed at producing complete geologic map coverage for the Phoenix-Tucson metropolitan corridor. A 1:24,000 scale map is the primary product of this study (Plate 1). 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 Program Contract #00HQAG0149.Additional Links
https://library.azgs.arizona.edu/item/ADGM-1567548237916-197Language
enSeries/Report no.
DGM-11Rights
Arizona Geological Survey. All rights reserved.Collection Information
Documents 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.North Bounding Coordinate
32South Bounding Coordinate
31.875West Bounding Coordinate
-110.75East Bounding Coordinate
-110.625Collections
Related items
Showing items related by title, author, creator and subject.
-
Stratigraphy and Sedimentology of the Bisbee Group in the Whetstone Mountains, Pima and Cochise Counties, Southeastern ArizonaThe Aptian-Santonian(?) Bisbee Group in the Whetstone Mountains comprises 2375 m of clastic sedimentary rocks and limestones. The basal Glance Conglomerate unconformably overlies the Pennsylvanian-Permian Naco Group. It consists of limestone conglomerates which were deposited in proximal alluvial fan environments. The superadjacent Willow Canyon Formation contains finer grained rocks which were deposited in the distal portions of alluvial fans. The lacustrine limestones in the Apache Canyon Formation interfinger with and overlie these alluvial fan facies. The overlying Shellenberger Canyon Formation is composed mostly of terrigenous rocks derived from westerly terranes. This formation contains thick sequences of fluvio-deltaic facies as well as a thin interval of estuarine deposits which mark a northwestern extension of the marine transgression in the Bisbee -Chihuahua Embayment. The youngest formation (Upper Cretaceous?) in the Bisbee Group, the Turney Ranch Formation, consists of interbedded sandstones and marls which were deposited by fluvial and marine(?) processes.
