The Tucson Mountains are largely the remains of an immense, more than 15-mile-long volcanic caldera, or collapsed volcano. %PDF-1.2 %���� These rocks consist dominantly of Eocene muscovite leucogranite and pegmatite sills within Proterozoic granite, with middle Proterozoic and Paleozoic metasedimentary rocks preserved at the crest of the range (Keith et al., 1980; Force, 1997). The Tucson basin is a broad 1,000-square-mile area in the upper Santa Cruz River drainage basin. Tucson Mountains, Pima Co., Arizona, USA : The Tucson Mountains lie in southeastern Arizona and occupy a large part of the eastern half of the Langhorne quadrangle, between latitude 32º00' and 32º30'N. The information comprises a GIS database and a visualization of the data as a default map layout. Ref. Figure 19. Scenery on the 90-minute drive from downtown Tucson to the top of the highest mountain peak in the Santa Catalina Mountains, Mt. GEOLOGY OF THE SOUTH COMOBABI MOUNTAINS AND KO YAYA HILLS PIMA COUNTY, ARIZONA by Leonid Bryner ABSTRACT The South Comobabi Mountains and Ko Vaya Hills are in the Papago Indian Reservation in southern Arizona, about midway between the towns of Tucson and Ajo. 0000019297 00000 n Allen, M.A. This report and accompanying maps describe the surficial geology, geomorphology, and geologic hazards around the Tucson Mountains, on the western margin of the Tucson metropolitan area. 0000009924 00000 n Mayo, E.B. Please cite by using: [a description of the item]. 0000001932 00000 n To scientists' surprise, they found scores of dead trees and shrubs at lower altitudes, but flourishing plants uphill. Local geology included copper ore bodies distributed ... Plans for open pit mining there date to 1974 when Anamax first contemplated the investment in the Santa Rita Mountains southeast of Tucson. 3). Desert heat, volcanic fire: The geologic history of the Tucson Mountains and southern Arizona (Arizona Geological Society digest) [Kring, David A] on Amazon.com. Tucson Mountains is covered by the Cat Mountain, AZ US Topo Map quadrant The USGS (U.S. Geological Survey) publishes a set of the most commonly used topographic maps of the U.S. called US Topo that are separated into rectangular quadrants that are printed at 22.75"x29" or larger. The Tucson Mountain block is about 20 miles long and up to 7 miles wide at present, although valley fill covers much of the lower slopes of the mountain block. What was here, we ask, when … Join geologist George online via Zoom to learn about the Tucson Mountains. The Tucson Mts. The complexity of their geology, the variety of their igneous rocks, and the diversity of their ore deposits all combine to make the Tucson and Amole Mountains a very rich field for students and scientists. https://ngmdb.usgs.gov/Prodesc/proddesc_10186.htm, Geologic map of the Tucson Caldera, Arizona, Silver Creek Caldera - Origin of Peach Spring Tuff, Hopi Buttes Volcanic Field, northern Arizona, Volcanoes of the San Francisco volcanic field. Additionally the Sierrita Mountains lie due south, the Roskruge Mountains lie to the west across Avra Valley, the Silver Bell Mountainslie to the northwest, an… 0000018633 00000 n Sketch Map of the Tucson Mountains supervolcano. The Tucson Mountain block is about 20 miles long and up to 7 miles wide at present, although valley fill covers much of the lower slopes of the mountain block. The mountains generally are within the Coronado National Forest and are not developed, but some homes have been built on the lower flanks of the mountains up to the forest boundary. Local geology included copper ore bodies distributed along northeast-southwest trending fractures occurring in country rock composed of Kaibab limestone, calcareous sandstone, and chert. Fassnacht4 1Department of Hydrology and Water Resources, University of Arizona, Tucson, AZ, USA 2United States Geological Survey WRD, Denver, CO, USA 3School of Engineering, University of California, Merced, CA, USA 0000016021 00000 n Allen: Arizona Bureau of Mines Bulletin no. 0000011088 00000 n The University makes no warranties or representations of any kind, and specifically disclaims all warranties including the warranty of merchantability and fitness for a particular purpose. Streamflow estimation from hydrologic model updates of remotely sensed snow information in snowmelt dominated basins K.A. (1920) A geological reconnaissance of the Tucson and Amole Mountains, with Notes on the southern section of the Amole mining district, by M.A. He specialized in porphyry copper exploration in the Southwest U.S., but also worked in Mexico, Canada and the Western U.S., exploring base and precious … Tucson Mountains, Pima Co., Arizona, USA : The Tucson Mountains lie in southeastern Arizona and occupy a large part of the eastern half of the Langhorne quadrangle, between latitude 32º00' and 32º30'N. The Tucson and Amole Mountains are so accessible for visitors to Tucson that it is believed a brief description of the geology and mineral resources of these mountains will prove welcome. Kinnison spent over twelve years with ASARCO. Regionally, the map area is southwest of the Pantano Wash. Portions of this map area have been developed since the most recent aerial photography; therefore these areas were mapped from the air photos and ground checked where possible. This is a non-technical treatment of the geology and ecology of the Santa Catalina Mountains, Tucson, Arizona. What can 10,000 years possibly mean to us, let alone 65,000 or 70 million? Since the 1970s, the region has seen average temperatures rise 2 degrees as well as extended periods of drought. Day 1 – The Geology Wall. 0000015118 00000 n The mapping covers the Avra, Brown Mountain, Cat Mountain, and Jaynes 7 1/2’ quadrangles and includes part of the City of Tucson and unincorporated Pima County (Figure 1). 0000015947 00000 n 0000001511 00000 n The lowest of the four mountain ranges immediately surrounding the city of Tucson (the others are the Santa Catalina Mountains, the Rincon Mountains and the Santa Rita Mountains) they are nonetheless the mountains that really yell “Tucson!”. Tucson Mountains Pima County, Arizona The Tucson Mts. Surficial Geology and Geologic Hazards of the Tucson Mountains, Pima County, Arizona Avra, Brown Mountain, Cat Mountain, and Jaynes Quadrangles by Philip A. Pearthree and Thomas H. Biggs Arizona Geological Survey Open-File Report 99-22 Publication type: Report: Publication Subtype: USGS Numbered Series: Title: Geologic map of the Tucson Mountains Caldera, southern Arizona: Series title: IMAP Title: Geologic map of the Tucson Mountains caldera, southern Arizona Author(s): Lipman, P.W. 0000015968 00000 n (discussed above) Also shown on geologic map, Figure 30.A basal unit of the volcanic blowout is called the 'chaos' unit, which is a huge thick pile of older rock debris and rhyolite blowout ' breccia ' (broken-up rock) which is seen on the Tucson city (east) side. 106, 29 p. Mountains — 22 miles as the crow flies southwest of Quartzite. 0000016819 00000 n 0000013477 00000 n Publishing Organization: U.S. Geological Survey Series and Number: Miscellaneous Investigations Series Map I-2205 Publication Date: 1993 Map Scale: 1:24,000 Cross Section: Yes North Latitude: 32° 22' 30" N (32.3750) South Latitude: 32° 7' 30" N (32.1250) The Santa Catalina Mountains lie to the northeast, the Rincon Mountains are to the east of Tucson, and the Santa Rita Mountains lie to the south. The red colors are granitic batholith rocks (although sheared). Desert heat, volcanic fire: The geologic history of the Tucson Mountains and southern Arizona (Arizona Geological Society digest) thesis, 42 p. Bickerman (1962). A non-technical treatment of the geology and ecology of the Santa Catalina Mountains, Tucson, Arizona. Publishing Organization: U.S. Geological Survey Series and Number: Miscellaneous Investigations Series Map I-2205 Publication Date: 1993 Map Scale: 1:24,000 Cross Section: Yes North Latitude: 32° 22' 30" N (32.3750) South Latitude: 32° 7' 30" N (32.1250) Copper mineralization occurs in the Tucson Mountains, but not to the extent seen elsewhere. The Geologic History of and longitude 111º00' and 111º15'W. The landscapes that form the Santa Catalina Mountains of southeastern Arizona give that range a unique personality like no other in the American Southwest. Charles E. Eichelberger in 1896 discovered a high-grade gold ore body in the Kofa Mountains — also known as the S.H. Lemmon highway at Geology Vista, in Texas Canyon along I-10 east of Benson, and on Camelback Mountain (Echo Canyon) in Phoenix. is one of the favorite natural-cultural history short trips of Tucson. Top Tucson Geologic Formations: See reviews and photos of geologic formations in Tucson, Arizona on Tripadvisor. 0000014299 00000 n This report and accompanying maps describe the surficial geology, geomorphology, and geologic hazards around the Tucson Mountains, on the western margin of the Tucson metropolitan area. The highest peak in the Tucson Mountains is Wasson Peak at 4,687 feet, the terminus of many popular hiking trails in the park. The maps, reports, and other information and content on this website are provided as a public service for informational purposes only. Jenkins, O.P., and Wilson, E.D. Box 210184, Tucson, AZ 85721. Natural landscapes have distinctive personalities. Copper mineralization occurs in the Tucson Mountains, but not to the extent seen elsewhere. 0000011739 00000 n The Tucson Mountains (O'odham: Cuk Doʼag) are a minor mountain range west of Tucson, Arizona. The Tucson basin is bounded on the east and north by the Santa Rita, Empire, Rincon, Tanque Verde, Santa Catalina, and Tortolita Mountains and on the west by the Sierrita, Black, and Tucson Mountains (pi. 0000010529 00000 n Mudstone with folded layers, Tucson Mountains, Arizona Whereabouts. 231-087, Walter E. Heinrichs, Jr. mining collection, Arizona Geological Survey. Figure 19 maps the chaos unit distribution. The Tucson Mountains, including Wasson Peak, are one of four notable mountain ranges surrounding the Tucson Basin. 0000012574 00000 n Greenstein, G. (1961) The structure of the Amole Arkose north of King Canyon, Tucson Mountains, Arizona: Tucson, University of Arizona, M.S. Roger Weller, geology instructor. The volcano collapsed as the result of rapid eruption of volcanic ash which piled up in flows that reached an accumulated thickness of about three miles. *FREE* shipping on qualifying offers. In certain cases, the rivers draining mountain ranges create unusually large fan-shaped bodies of sediment that are referred to as fluvial megafans. The moun­ Unit is up to 400 feet thick with greatest thickness in central part of east side of range. is one of the favorite natural-cultural history short trips of Tucson. This digital product contains detailed information about the surficial geology of the Northern Tucson Basin and the Tucson Mountains. Mountains Tucson Mountains Located west of Tucson, Arizona, the Tucson Mountains is not impressively high as they only reach up to 4,687 feet. 0000008855 00000 n Unique in all of Tucson, if not the world, is Tohono Chul’s Geology Wall exhibit. The Santa Rosa Mountains host diverse habitats, including conifer forest, chaparral, woodland and desert scrub. 0000001299 00000 n The South Comobabi Mountains form on Towering stratovolcanoes erupted here with far greater explosive force than did modern Mount St. Helens, spewing several hundreds of cubic kilometers of hot volcanic debris across the landscape about 70 million years ago. General Information. The mapping covers the Avra, Brown Mountain, Cat Mountain, and Jaynes 7 1/2’ quadrangles and includes part of the City of Tucson and unincorporated Pima County (Figure 1). 0000010908 00000 n The dominant vegetation types are desertscrub and desert grassland.The vascular flora is unusually rich with 630 specific and infraspecific taxa in 332 genera and 80 families. https://ngmdb.usgs.gov/Prodesc/proddesc_10186.htm, 520.621.2470 | 1955 East 6th Street, P.O. Chenoweth, W.L., 2011, The Geology and Production History of the Jack Daniels Nos. The Tucson Mountains are the remains of a collapsed volcano ranging 15 miles long. In December 2014, Bob Metz was recognized for his 50-year membership with the Arizona Geological Society. The mapping covers the Avra, Brown Mountain, Cat Mountain, and Jaynes 7 1/2’ quadrangles and includes part of the City of Tucson and unincorporated Pima County (Figure 1). wellerr@cochise.edu last edited: 10/13/16 Gates Pass west side of Tucson Mountains, Pima County, Arizona. Some calderas, e.g., Silver Bell Mountains, are associated with massive porphyry copper deposits that make up the foundation of Arizona's copper industry. Users are responsible for verification of all facts and information to their own satisfaction. (1963) Volcanic orogeny of the Tucson Mountains (a preliminary report): Arizona Geological Society Digest: 6: 61-82. In the order that they are presented in this book, these island ranges are: Santa Catalina, Rincón, Tortolita, Santa Rita, Tucson, Galiuro, Pinaleño, Chiricahua, Mule, Huachuca, and Whetstone Mountains (Figure 1). Accuracy is not guaranteed, and the information contained or linked on this website should not be relied on except as general information. The 'Tucson Mountains - Old Pueblo Mine, Copper Oxides' file is part of the John E. Kinnison mining collection. We often wonder what the land we stand on was like in times past. We combine information from satellite imagery, monthly discharge and precipitation records, digital elevation models, and other sources to show that the formation of fluvial megafans requires particular climatic conditions. The city of Tucson is 2,389 feet above sea level and covers nearly 500 square miles. Crops out extensively in Tucson Mountains as tabular unit 14 mi long by 2-4 mi wide. 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