Publication type: Report: Publication Subtype: USGS Numbered Series: Title: Geologic map of the Tucson Mountains Caldera, southern Arizona: Series title: IMAP The Tucson Mountains are the remains of a collapsed volcano ranging 15 miles long. Kinnison spent over twelve years with ASARCO. Tucson Mountains Pima County, Arizona trailer << /Size 43 /Info 4 0 R /Encrypt 9 0 R /Root 8 0 R /Prev 35457 /ID[] >> startxref 0 %%EOF 8 0 obj << /Type /Catalog /Pages 6 0 R /Metadata 5 0 R >> endobj 9 0 obj << /Filter /Standard /R 2 /O ( U�V�.�`�����Dz�-���#_m�_�}�g) /U (�O�ؘ#�H���<6��S�82�>���,��M) /P -4 /V 1 /Length 40 >> endobj 41 0 obj << /S 46 /Filter /FlateDecode /Length 42 0 R >> stream Unique in all of Tucson, if not the world, is Tohono Chul’s Geology Wall exhibit. 0000012553 00000 n Mountains Tucson Mountains Located west of Tucson, Arizona, the Tucson Mountains is not impressively high as they only reach up to 4,687 feet. 0000017669 00000 n Crops out extensively in Tucson Mountains as tabular unit 14 mi long by 2-4 mi wide. Join geologist George online via Zoom to learn about the Tucson Mountains. 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. 0000009705 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. 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. and longitude 111º00' and 111º15'W. 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) Charles E. Eichelberger in 1896 discovered a high-grade gold ore body in the Kofa Mountains — also known as the S.H. Day 1 – The Geology Wall. Simplified geology map of the area surrounding Tucson (from the Arizona Geological Survey). 0000001511 00000 n The caldera was about 12 miles wide and 15 miles long. Mayo, E.B. (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. They may be short in stature, but they are big in beauty. 231-090, Walter E. Heinrichs, Jr. mining collection, Arizona Geological Survey. 0000018633 00000 n 0000010908 00000 n Ref. 0000001490 00000 n 0000001932 00000 n The Tucson Mountains are composed of volcanic rocks that collapsed into a caldera about 70 million years ago. 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). 0000013477 00000 n Mountains — 22 miles as the crow flies southwest of Quartzite. 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. 0000015139 00000 n Desert heat, volcanic fire: The geologic history of the Tucson Mountains and southern Arizona (Arizona Geological Society digest) : The Resources of Arizona - A Manual of Reliable Information Concerning the Territory, compiled by Patrick Hamilton (1881), Prescott, AZ: 47. Jenkins, O.P., and Wilson, E.D. The Geologic History of 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. Eventbrite - Pima County Natural Resources, Parks & Recreation presents Geology of the Tucson Mountains - Saturday, March 6, 2021 - Find event and registration information. The Tucson Mountain caldera is one of several Late Cretaceous calderas that crop out in southern and southeastern Arizona. It has everything: geology, climate, desert plants and ecology, past and present cultures, pollination, pack rats, mining, sunsets, and more. Local geology included copper ore bodies distributed along northeast-southwest trending fractures occurring in country rock composed of Kaibab limestone, calcareous sandstone, and chert. Mudstone with folded layers, Tucson Mountains, Arizona Whereabouts. is one of the favorite natural-cultural history short trips of Tucson. General Information. This digital product contains detailed information about the surficial geology of the Northern Tucson Basin and the Tucson Mountains. 0000015968 00000 n Dressler1, G. H. Leavesley2, R.C. The map layout is … Eleven island-like mountain ranges tower thousands of feet above adjacent basins in southeastern Arizona. The city of Tucson is 2,389 feet above sea level and covers nearly 500 square miles. Each is the product of the interplay of geology, climate, vegetation, time, and often, human activities. 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. 0000009924 00000 n 0000001150 00000 n mountains. Divided into lower conglomerate and upper chaos members. 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