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A Field Trip Guide To Sabino Canyon and the Mount Lemmon Highway, Pima County Arizona

dc.contributor.authorForce, Eric
dc.date.accessioned2018-09-13T21:55:33Z
dc.date.available2018-09-13T21:55:33Z
dc.date.issued2001
dc.identifier.citationForce, Eric, 2001, A Field Trip Guide To Sabino Canyon and the Mount Lemmon Highway, Pima County Arizona: Arizona Geological Survey Contributed Report CR-01-A, 37 p.
dc.identifier.urihttp://hdl.handle.net/10150/628996
dc.descriptionThe banded crystalline rocks of Sabino Canyon are a strong aesthetic component of the canyon's dramatic views. Certainly these rocks have attracted much attention from geologists. Until recently they were much-debated but poorly understood. When finally decoded (for example, Davis, 1980), these rocks and those of neighboring canyons became one of the best examples in the world of a "metamorphic core complex" (see also Saguaro National Park East). The main purposes of this trip are to acquaint the traveller with (1) the form of some large intrusions of formerly molten or igneous rock now cooled and solidified, (2) the effects of recrystallization and shearing to form a new rock called "mylonitic gneiss," (3) some faults and folds that formed later, and (4) more recent processes that cut the canyon itself. The intrusions are light-colored granitic rocks of Eocene age (about 50 million years). Granite is a coarse-grained igneous rock consisting mostly of feldspar and quartz. In this area the Eocene granites form sills, i.e. intrusions that parallel the structure of surrounding older rock or host rock. In this canyon, one granite sill, about 250 m (800) feet thick, forms the cliff-like upper canyon walls; two others can also be seen.
dc.language.isoen
dc.relation.ispartofseriesCR-01-A
dc.relation.urlhttps://library.azgs.arizona.edu/
dc.rightsArizona Geological Survey all rights reserved.
dc.subjectArizona Geological Survey Contributed Reports
dc.subjectEocene age
dc.subjectArizona
dc.subjectPima County
dc.subjectMount Lemmon
dc.subjectSabino Canyon
dc.subjectquartz
dc.subjectfeldspar
dc.subjectigneous rock
dc.subjectfolds
dc.subjectfaults
dc.subjectmylonitic gneiss
dc.subjectField Trip Guide
dc.subjectBasin and Range Province
dc.subjectTertiary extension
dc.subjectdetachment fault
dc.subjectcore complex
dc.subjectOracle Granite
dc.titleA Field Trip Guide To Sabino Canyon and the Mount Lemmon Highway, Pima County Arizona
csdgm.bounding.west-110.934
csdgm.bounding.east-110.566
csdgm.bounding.north32.5958
csdgm.bounding.south32.2713
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.dateFOA2018-09-13T21:55:33Z


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