Dragoon Mts, Cochise Co., Arizona, USA
|Latitude & Longitude (WGS84):||31° 56' 22'' North , 109° 58' 53'' West|
|Latitude & Longitude (decimal):||31.93944,-109.98139|
|Other regions containing this locality:||Sonoran Desert, North America|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
‡Ref.: Gilluly, James (1941) Thrust faulting in the Dragoon Mountains, Arizona [abs.]: Geological Society of America Bulletin: 52: 1949.
Cederstrom, D.J. (1946a) Geology of the central Dragoon Mountains, Arizona: Tucson, University of Arizona, Ph.D. dissertation, 93 p.
Cederstrom, D.J. (1946b) The structural geology of the Dragoon Mountains, Arizona: American Journal of Science: 244(9): 601-621, 1 sheet, scale 1:31,680.
Wilson, E.D., et al (1951), Arizona zinc and lead deposits, part II, AZ Bur. Mines Bull. 158: 10-29 (Chapter 2).
Cooper, J.R. (1959) Some geologic features of the Dragoon quadrangle, Arizona, in Heindl, L.A., ed., Southern Arizona Guidebook II, combined with the 2nd annual Arizona Geological Society Digest: Arizona Geological Society, p. 139-145.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 43.
Cooper, J.R., and Silver, L.T. (1964) Geology and ore deposits of the Dragoon quadrangle, Cochise County, Arizona: U.S. Geological Survey Professional Paper 416, 196 p., 13 sheets, scales 1:600, 1:1,200, 1:2,400, 1:4,800, 1:12,000, 1:31,680, 1:125,000.
Micklin, R.F. (1969) Fusulinds and conodonts of a Pennsylvanian-Permian section in the northern Dragoon Mountains, Cochise County, Arizona: Tucson, University of Arizona, M.S. thesis, 257 p.
Keith, Stanton B., and Barrett, L.F. (1976) Tectonics of the central Dragoon Mountains: A new look, in Wilt, J.C., and Jenney, J.P., eds., Tectonic digest: Arizona Geological Society Digest: 10: 169-204, 1 sheet, scale 1:24,000.
Rushing, J.A. (1978) Contact metamorphism and metasomatism of Paleozoic rocks near Stronghold Canyon, Dragoon Mountain, Arizona: Tucson, University of Arizona, M.S. thesis, 96 p.
Drewes, H.D., and Meyer, G.A. (1983) Geologic map of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-A, 1 sheet, scale 1:50,000.
Drewes, H.D., Watts, K.C., Jr., and Klein, D.P. (1983) Mineral resource potential map of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-B, 8 p., 1 sheet, scale 1:50,000.
Klein, D.P. (1983) Geophysical maps of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-C, 1 sheet, scale 1:50,000.
Baer, M.J., and Klein, D.P. (1984) Audio-magnetotelluric data in the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Open-File Report 84-0417, 60 p.
Drewes, H.D. (1984) Reconnaissance geochemical maps of mineralized rocks in the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-D, 1 sheet, scale 1:50,000.
Drewes, H.D., and Kreidler, T.J. (1984) Dragoon Mountains Roadless Area, Arizona, in Marsh, S.P., and others, eds., Wilderness mineral potential - Assessment of mineral resource potential in U.S. Forest Service lands studied 1964-84, v. 1: U.S. Geological Survey Professional Paper 1300, p. 58-61.
Kreidler, T.J. (1984) Mine and prospect map of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-F, 1 sheet, scale 1:50,000.
Watts, K.C., Erickson, M.S., Day, G.W., and Hassemer, J.R. (1984) Statistical analysis, and listing of spectrographic analyses of alluvial heavy-mineral concentrates and sieved stream-sediment samples, Dragoon Mountains Roadless Area and contiguous areas, Cochise County, Arizona: U.S. Geological Survey Open-File Report 84-0013, 41 p., 1 sheet, scale 1:125,000.
Watts, K.C., Hassemer, J.R., Erickson, M.S., and Drewes, Harald (1984) Geochemical and mineralogic maps of the Dragoon Mountains Roadless Area, Cochise County, Arizona: U.S. Geological Survey Miscellaneous Field Studies Map MF-1521-E, 2 sheets, scale 1:50,000.
Drewes, H.D. (1987) Geologic map and cross sections of the Dragoon Mountains, southeastern Arizona [Turquoise Mtn., Black Diamond Peak, Pearce, Cochise Stronghold, Haberstock Hill, Knob Hill, Cochise, and Dragoon 7.5 min.]: U.S. Geological Survey Miscellaneous Investigations Series Map I-1662, 2 sheets, scale 1:24,000.
Spencer, J.E., Gehrels, G.E., Bedford, J. Hall, D., Long, K., Miller, L., and Tufts, R. (1993) Geologic maps as interpretive studies: An example from the Dragoon Mountains: Arizona Geology [Arizona Geological Survey]: 23(1): 1-2, 7.
Yale Peabody GNIS database.
The Dragoon Mountains are in central Cochise County, between the San Pedro and Sulphur Spring valleys.
The Dragoon Range trends northwesterly, with a length of approximately 26 miles and a width of 3 to 12 miles. Its crest rises 1,000 to 3,000 feet above the adjacent plains and attains a maximum altitude of 7,512 feet. Its slopes are characteristically steep, and the northern portion in the vicinity of Cochise Stronghold is extremely rugged.
Schist, probably of older Precambrian age, crops out immediately west of Courtland and also on the west slope in the vicinity of South Pass.
North of the schist area on the west side of the range is a small exposure of dark greenish porphyritic granite carrying numerous schist fragments.
Bolsa Quartzite of middle Cambrain age overlies the schist and granite in the central and northern portions of the range and at Courtland. Because of faulting, intrusion, and erosion, its maximum observed thickness of 325 feet does not represent its total.
Overlying the Bolsa quartzite is the Upper Cambrian Abrigo Limestone which, on the southwest side of the range has an exposed thickness of approximately 400 feet. In places about 50 feet of yellow and red sandy shale, possibly equivalent to the Cochise formation, separates the Abrigo from the Bolsa.
Above the Abrigo is Devonian Martin limestone which has been recognized chiefly in the southwestern part of the area. There it has a maximum thickness of 355 feet.
The Mississippian Escabrosa Limestone is characterized by medium- to massive beds which, if metamorphosed, tend to form crystalline, relatively pure marble. It shows a thickness of 300 feet in the southwestern art of the range and occurs prominently in the Courtland area.
Pennsylvanian Naco Limestone constitutes part of the Gleeson Ridge, and naco Limestone of Snyder Hill (Permian) aspect is widespread in the main range. These limestones are medium- to thin-bedded, the Pennsylvanian is somewhat cherty, and the Permian is locally impure.
A series from 1,000 to possibly 3,000 feet thick, of shale, sandstone, and basal conglomerate unconformably overlies the Paleozoic rocks, chiefly in the middle segment of the range and north of Courtland. It has been correlated tentatively with the Lower Cretaceous (Comanchean) Bisbee group.
Intruding the Cretaceous and older rocks is the Stronghold granite which occupies an area of more than 50 square miles in the northern portion of the range and extends as irregular masses and great dikes into the older formations. In the southern third of the area, granitic rocks also make up large areas. At Courtland and Gleeson, they include quartz monzonite, quartz-monzonite porphyry, and granite, all of post-Paleozoic age. Dikes of aplite, rhyolite porphyry, felsite, and diabase are common locally.
Commodity ListThis is a list of exploitable or exploited mineral commodities recorded from this region.
Mineral ListMineral list contains entries from the region specified including sub-localities
120 valid minerals.
This geological map and associated information on rock units at or nearby to the coordinates given for this locality is based on relatively small scale geological maps provided by various national Geological Surveys. This does not necessarily represent the complete geology at this locality but it gives a background for the region in which it is found.
Click on geological units on the map for more information. Click here to view full-screen map on Macrostrat.org
|Langhian - Chattian|
13.82 - 28.1 Ma
|Middle Miocene to Oligocene granitic rocks|
Age: Cenozoic (13.82 - 28.1 Ma)
Description: Granite to diorite representing solidified magma chambers that were the likely source of overlying and nearby volcanic rocks of map unit Tv. The granitic rocks are typically equigranular and fine- to medium-grained. (14-26 Ma)
Reference: Horton, J.D., C.A. San Juan, and D.B. Stoeser. The State Geologic Map Compilation (SGMC) geodatabase of the conterminous United States. doi: 10.3133/ds1052. U.S. Geological Survey Data Series 1052. 
Localities in this Region
- Cochise Co.
- Dragoon Mts
- Bluebird District
- Dragoon District
- Dragoon District (Golden Rule District)
- Bill's Cut prospect
- Buena Vista and Horse Fall Mines
- Golden Rule Mine (Old Terrible Mine; Golden Eagle Mine; Santa Lucia Mine)
- Hubbard Mine (Democrat & Sherman Mine; Dragoon Zinc Mine; Dragoon Zinc-Lead Mine; Rainbow Mine)
- Senecia Mine (Senika Mine; Seneca Mine; Lewis group)
- Dragoon Mountains prospect
- Dragoon quadrangle
- Johnnie Boy No. 1 claim
- Johnny Lyon Hills
- Middle Pass District
- Arizona group
- Black Diamond Mine (Englander Mine; Black Diamond claim)
- Black Diamond Peak
- Burrito de Fierro Mine (Ligier Mine; Perevill & Danvers Mine)
- Christmas Mine (Dragoon Mine; Christmas prospect)
- Cobre Loma Mine (Cobre Loma prospect; Cobre Loma pit)
- Cochise Stronghold
- Cochise Stronghold area
- Dragoon Pass
- Ella prospect
- Emma adit (Coronado NF Dragoon Unit)
- Escapule Mine group (Escapule Mine; Joe Escapule Mine; Moonlight group; Northside group; Garnet group; Arizona group)
- Gordon Camp
- Gordon Spring prospects
- Grant group
- Lloyd and Laverns prospect
- Loma Linda Mine (Loma Linda pit)
- Lulty prospect
- McDaniel's Cut prospect
- Middle March Pass
- Middlemarch Canyon
- Middlemarch Mine (Missouri Mine; Missouri shaft; Morning Glory shaft)
- Middlemarch Pass area
- Muheim Mine (Zinc Basin Mine; White Metal Mine; White Tail Mine; Grant group)
- Naoe claims (Fourr claims; Good Hope Mine; Barnes Mine)
- Pittsburgh and Manhattan Patents
- Rainbow Mine
- Sorin Camp Mine
- St. Francis Mine (Granite Bluff claims; Coronado Marble Co. property)
- The Pit prospect
- Unnamed adit
- Unnamed Ag prospect
- Unnamed Cu-Ag prospect
- Unnamed Cu-Zn-Au-As prospect
- Unnamed Cu-Zn-Pb-Ag prospect
- Unnamed Zn-Au-Ag prospect
- Unnamed Zn-Cu-Ag prospect
- Unnamed Zn-Cu prospect (3)
- Unnamed Zn-Cu prospect 
- Unnamed Zn prospect (1)
- Unnamed Zn prospect (2)
- Unnamed Zn prospect (3)
- Unnamed Zn prospect (4)
- Dragoon Mts
- Cochise Co.
- Cochise Co.
- Dragoon Mts
- Middle Pass District
- Red Cloud Peak
- Turquoise District (Courtland-Gleeson District)
- Antelope group
- April Fool Mine (Calumet and Arizona Mining Co. property)
- Armstrong Mine
- Barrett Camp ghost town
- Black Jester prospect
- Bodie Mine
- Challenge Mine
- Copper Rocks Mine (Copperrox Mine; Copper Rox Mine; Copper Ox Mine; Barrett group; Arizona Copper Syndicate of Providence Mine)
- Cyclone Mine
- Germania Mine
- Bell Mine
- Copper Belle Mine (Leonard Mine; Pemberthy Mine; Charleston group)
- Costello Mine group (Costello claims)
- Courtland-Gleeson placer
- Gleeson area
- Gleeson Mine
- Gleeson placers
- Gleeson ridge
- May Mine
- Mystery Mine (Mystery Tunnel Mine; Minerals Exploration Co. property)
- Tejon group (Tejon Mining Company property)
- Turquoise Mountain
- Gold Band Mine
- Gold Camp Mines area
- Great Western Mine
- Herron Mine (Calomel Mine; Thelma Mine)
- Highland Mine
- Humbot Mine
- Kendall group
- King Plomo Mine
- Leadville Mines (Armstrong Mine; Andes Copper)
- Maid of Sunshine Mine
- Mame Mine
- Mangum claims
- Mary Mine
- Maud Hill Mine group
- Maude Hill
- McLenden Mine (Turquoise King Mine)
- Mono Mine
- Muso Mine (Musso Mine)
- New Year Gift Mine & Grenadier Mine group
- Ontario Mine
- Ora May claim
- Poorman Mine
- Shannon Mine (Shannon Copper Belle Mine)
- Silverton Mine
- Star claim
- Star Hill prospect (Star Hill deposit)
- Turquoise Group Mines
- Turquoise Mountain
- Turquoise Ridge
- Vera Mine
- Wellington group (Wellington claims)
- West Hills Copper Oxide Mine
- Wisconsin group
- Dragoon Mts
- Cochise Co.