Providencia Canyon, Helvetia-Rosemont District, Santa Rita Mts, Pima Co., Arizona, USA
|Latitude & Longitude (WGS84):||31° 22' 39'' North , 110° 48' 45'' West|
|Latitude & Longitude (decimal):||31.37750,-110.81250|
|Other regions containing this locality:||Sonoran Desert, North America|
|Köppen climate type:||BSk : Cold semi-arid (steppe) climate|
‡Ref.: Guild, F.N. (1907), The composition of molybdite from Arizona, American Journal of Science, 4th series: 23: 455-456.
Schrader, F.C. & J.M. Hill (1909), Some occurrences of molybdenite in the Santa Rita and Patagonia Mountains, Arizona, USGS Bull. 430: 154-163.
University of Arizona Bull. 41 (1916-17), Mineralogy of Useful Minerals in Arizona: 46, 50.
Creasey, S.C. & G.L. Quick (1955), Copper deposits of part of Helvetia mining district, Pima County, Arizona, USGS Bull. 1027-F: 301-323.
Galbraith, F.W. & D.J. Brennan (1959), Minerals of Arizona: 24.
Anthony, J.W., et al (1995), Mineralogy of Arizona, 3rd. ed.: 302.
2 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
|Gelasian - Burdigalian|
1.806 - 20.44 Ma
|Pliocene to middle Miocene deposits|
Age: Cenozoic (1.806 - 20.44 Ma)
Description: Moderately to strongly consolidated conglomerate and sandstone deposited in basins during and after late Tertiary faulting. Includes lesser amounts of mudstone, siltstone, limestone, and gypsum. These deposits are generally light gray or tan. They commonly form high rounded hills and ridges in modern basins, and locally form prominent bluffs. Deposits of this unit are widely exposed in the dissected basins of southeastern and central Arizona. (2-16 Ma)
Comments: In dissected basins of southeast and central Arizona
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. 
|Miocene - Oligocene|
5.333 - 33.9 Ma
|Cenozoic volcanic rocks|
Age: Cenozoic (5.333 - 33.9 Ma)
Comments: Sierra Madre Occidental
Reference: Chorlton, L.B. Generalized geology of the world: bedrock domains and major faults in GIS format: a small-scale world geology map with an extended geological attribute database. doi: 10.4095/223767. Geological Survey of Canada, Open File 5529.