Geologic Map of the Tortolita Mountains, Pinal and Pima Counties, Arizona, v. 2.0

Ferguson, C.A.; Johnson, B.J.; Skotnicki, S.J.; Maher, D.J.; Spencer, J.E.; Gilbert, W.G.; Richard, S.M.; Youberg, A.; Demsey, K.A.; House, P.K.

The UA Campus Repository is experiencing systematic automated, high-volume traffic (bots). Temporary mitigation measures to address bot traffic have been put in place; however, this has resulted in restrictions on searching WITHIN collections or using sidebar filters WITHIN collections. You can still Browse by Title/Author/Year WITHIN collections. Also, you can still search at the top level of the repository (use the search box at the top of every page) and apply filters from that search level. Export of search results has also been restricted at this time. Please contact us at any time for assistance - email repository@u.library.arizona.edu.

Show simple item record

dc.contributor.author	Ferguson, C.A.
dc.contributor.author	Johnson, B.J.
dc.contributor.author	Skotnicki, S.J.
dc.contributor.author	Maher, D.J.
dc.contributor.author	Spencer, J.E.
dc.contributor.author	Gilbert, W.G.
dc.contributor.author	Richard, S.M.
dc.contributor.author	Youberg, A.
dc.contributor.author	Demsey, K.A.
dc.contributor.author	House, P.K.
dc.date.accessioned	2018-11-13T23:29:34Z
dc.date.available	2018-11-13T23:29:34Z
dc.date.issued	2021-09-01
dc.identifier.citation	Ferguson, C.A., Johnson, B.J., Skotnicki, S.J., Maher, D.J., Spencer, J.E., Gilbert, W.G., Richard, S.M., Youberg, A., Demsey, K.A., and House, P.K., 2021, Geologic Map of the Tortolita Mountains, Pinal and Pima Counties, Arizona: Arizona Geological Survey Digital Geologic Map DGM-26, version 2.0, map scale 1:24,000, 46 p., 2 map sheets and metadata.
dc.identifier.uri	http://hdl.handle.net/10150/630962
dc.description	The geologic map of the Tortolita Mountains encompasses the Tortolita Mountains 7.5’ quadrangle plus parts of 3 adjoining 7.5’ quadrangles; Desert Peak and Marana to the west and southwest, and Ruelas Canyon to the south. The Tortolita Mountains mark the northwestern extent of the Catalina metamorphic core complex (Davis, 1980; Banks, 1980; Keith et al., 1980; Dickinson, 1991; Force, 1997). Metamorphic and plutonic rocks of the complex were exhumed along a low-angle detachment fault of Mid-Tertiary age that is exposed along the southern edge of the Rincon and Santa Catalina Mountains and is inferred to lie buried beneath piedmont deposits along the southern edge of the Tortolita Mountains. A single small exposure of Middle Proterozoic Dripping Spring Quartzite on the southern piedmont of the Tortolita Mountains is interpreted to lie in the hanging wall of the Catalina detachment fault. This study documents a ductile shear zone in the northern part of the range, herein named the Carpas Wash shear zone, and a system of brittle normal faults that are interpreted as the northern continuation of the Catalina detachment fault system. Other important conclusions based on our mapping include: 1) recognition of a major, east-dipping normal fault bounding the western edge of a west-tilted sequence of volcanic rocks at Owl Head Buttes, 2) reinterpretation of a sequence of metasedimentary rocks near the head of Parker Canyon as Paleoproterozoic Pinal Schist instead of Mesoproterozoic Apache Group, 3) recognition of a north-dipping, top-tothe- west low-angle normal fault with an exceptionally wide and well-developed chloritic breccia ledge in its footwall along the western edge, 4) reinterpretation of the Cochie Canyon shear zone as a septum of Pinal Schist separating two major plutonic complexes, and 5) reinterpretation of a part of an easterly strand of the Guild Wash fault zone as a series of south-dipping reverse faults that cut the lower part of the Tertiary supracrustal stratigraphic sequence and that are overlain by Tertiary conglomeratic units.
dc.language.iso	en
dc.publisher	Arizona Geological Survey (Tucson, AZ)
dc.relation.ispartofseries	DGM-26
dc.relation.url	https://library.azgs.arizona.edu/item/ADGM-1637285067628-964
dc.rights	Arizona Geological Survey. All rights reserved.
dc.subject	Arizona Geological Survey Digital Geologic Maps
dc.subject	Catalina detachment fault
dc.subject	Rincon
dc.subject	Santa Catalina Mountains
dc.subject	Catalina metamorphic core complex
dc.subject	Ruelas Canyon
dc.subject	Desert Peak
dc.subject	marana
dc.subject	Tortolita Mountains
dc.subject	Pima County
dc.subject	Pinal County
dc.subject	Spring Quartzi
dc.subject	piedmont deposits
dc.subject	plutonic
dc.subject	Metamorphic
dc.subject	Paleoproterozoic
dc.subject	Paleozoic
dc.subject	Oligocene
dc.subject	Tertiary
dc.subject	Proterozoic
dc.subject	Quaternary
dc.subject	Pleistocene
dc.subject	Holocene
dc.subject	Chirreon Wash
dc.subject	Fresnal Canyon
dc.subject	Wild Burro Canyon
dc.subject	Owl Head Buttes
dc.subject	plutons
dc.subject	granitoids
dc.subject	volcanics
dc.subject	Oracle Granite
dc.subject	tuff
dc.subject	conglomerate
dc.subject	talus
dc.subject	mine dumps
dc.subject	ductile deformation
dc.subject	Guild Wash fault
dc.subject	Carpas Wash shear zone
dc.subject	hanging wall geometry
dc.subject	thermochronology
dc.subject	metamorphic core complex
dc.subject	detachment fault
dc.subject	Pinal Schist
dc.subject	Dripping Spring Quartzite
dc.title	Geologic Map of the Tortolita Mountains, Pinal and Pima Counties, Arizona, v. 2.0
csdgm.bounding.west	-111.167
csdgm.bounding.east	-110.99
csdgm.bounding.north	32.626
csdgm.bounding.south	32.435
dc.description.collectioninformation	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.
refterms.dateFOA	2018-11-13T23:29:34Z