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Bedrock Geologic Map of Organ Pipe Cactus National Monument and Vicinity, Southwest Arizona

dc.contributor.authorThompson, Lisa A.
dc.contributor.authorHaxel, Gordon B.
dc.contributor.authorPeterson, Donald W.
dc.contributor.authorMay, Daniel J.
dc.contributor.authorTosdal, Richard M.
dc.contributor.authorMiller, Robert J.
dc.contributor.authorGray, Floyd
dc.contributor.authorLeVeque, Richard A.
dc.contributor.authorUmhoefer, Paul J.
dc.date.accessioned2024-08-27T18:33:03Z
dc.date.available2024-08-27T18:33:03Z
dc.date.issued2024-08-27
dc.identifier.citationThompson, L.A., Haxel, G.B., Peterson, D.W., May, D.J., Tosdal, R.M., Miller, R.J., Gray, F., LeVeque, R.A., and Umhoefer, P.J., 2024, Geologic map of Organ Pipe Cactus National Monument and vicinity, southwest Arizona: Arizona Geological Survey Contributed Report CR-24-B, 28 p., scale 1:40,000.en_US
dc.identifier.urihttp://hdl.handle.net/10150/674763
dc.descriptionOrgan Pipe Cactus National Monument preserves an area of 1300 km² typical of the Lower Sonoran Desert ecosystem of southern Arizona, encompasses part of the ancestral lands of the Tohono O’odham Nation, and adjoins the international border between United States and Mexico. In 1976, the Monument was declared a UNESCO Biosphere Reserve; in 1977, 95 percent of the Monument area was designated Wilderness. The hallmark species of OPCNM is the organpipe cactus (Stenocereus thurberi). This columnar cactus, though common in northwest Mexico and widely scattered through parts of southwest Arizona, is most abundant in the United States in OPCNM. Another arboreal Mexican cactus, the senita (Lophocereus schottii), is found in the U.S. only in one small area within OPCNM. OPCNM geology is characterized by northwest-southeast trending mountain ranges separated by broad alluvial plains, typical of the southern Basin and Range tectonic province. Diverse volcanic, intrusive, metamorphic, and sedimentary rocks exposed within and near the Monument record nearly two billion years of Earth history, weather to picturesque geomorphic features, and support several distinctive plant communities. Rocks near the town of Ajo (18 km north of the Monument) host ores of copper, molybdenum, and gold. This report is a much-revised version of data originally compiled for the National Park Service Geologic Resource Inventory. The report and accompanying map collect decades-long work in geologic mapping of OPCNM and analytical studies of its rocks; document the geologic history of the Monument; and provide a complete, current geologic map for scientific, educational, and public use.en_US
dc.language.isoenen_US
dc.publisherArizona Geological Survey (Tucson, AZ)en_US
dc.relation.ispartofseriesArizona Geological Survey Contributed Reporten_US
dc.relation.urlhttps://library.azgs.arizona.edu/en_US
dc.rightsArizona Geological Survey. All rights reserved.en_US
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en_US
dc.subjectBedrock Geologic Mapen_US
dc.subjectOrgan Pipe Cactus National Monumenten_US
dc.subjectGeologic historyen_US
dc.subjectQuitobaquito Hillsen_US
dc.subjectGunsight Hillsen_US
dc.subjectAjo Rangeen_US
dc.subjectBates Mountainsen_US
dc.subjectGrowler Mountainsen_US
dc.subjectPuerto Blanco Mountainsen_US
dc.subjectDiablo Mountainsen_US
dc.subjectCypriano Hillsen_US
dc.subjectDiaz Spireen_US
dc.subjectMontezuma Headen_US
dc.subjectKino Peaken_US
dc.subjectAlamo Canyonen_US
dc.subjectArch Canyonen_US
dc.subjectBoulder Canyonen_US
dc.subjectEster Canyonen_US
dc.subjectTillotson Peaken_US
dc.subjectProterozoicen_US
dc.subjectJurassicen_US
dc.subjectCretaceousen_US
dc.subjectNeogeneen_US
dc.subjectBatamote Andesite Complexen_US
dc.subjectMontezuma Head rhyoliteen_US
dc.subjectChilds latiteen_US
dc.subjectPinkley Peak rhyoliteen_US
dc.subjectChagit Vo gneissen_US
dc.subjectSenita basin graniteen_US
dc.subjectBandeja Well granodioriteen_US
dc.subjectGunsight Hills granodioriteen_US
dc.subjectAguajita Spring graniteen_US
dc.subjectDaniel’s conglomerateen_US
dc.subjectLa Abra complexen_US
dc.subjectScarface Mountain conglomerateen_US
dc.titleBedrock Geologic Map of Organ Pipe Cactus National Monument and Vicinity, Southwest Arizonaen_US
dc.contributor.departmentArizona Geological Surveyen_US
dc.contributor.departmentUnited States Geological Surveyen_US
dc.contributor.departmentNorthern Arizona Universityen_US
csdgm.bounding.west-113.125en_US
csdgm.bounding.east-112.5en_US
csdgm.bounding.north32.251en_US
csdgm.bounding.south31.782en_US
dc.description.collectioninformationDocuments in the AZGS Documents 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.en_US
refterms.dateFOA2024-08-27T18:33:05Z


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