Some Arizona Ore Deposits
Issue Date
1938-10-01Keywords
Arizona Geological Survey BulletinsLaramide
Cenozoic
Paleozoic
cretaceous
Mesozoic
Carboniferous
Devonian
Silurian
OrdovicianCambrianPre-CambrianLa Paz CountyGreenlee CountyMohave CountySanta Cruz CountyYuma CountyGraham CountyYavapai CountyGila CountyCochise CountyPinal CountyPima CountyMaricopa CountyDesert RegionMountain RegionArizonaBasin and Range Provincebedrock geologytopographypiedmontgeomorphologyminingsurficial geologyGeologyore deposits
Metadata
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The principal ore deposits of Arizona are in the southern, central, and western portions of the state, which physiographically are part of the Basin and Range province, southwest of the Colorado Plateau (PI. I). The Basin and Range province is characterized by numerous subparallel mountain ranges separated by plains or valleys. Most of these ranges trend northwest to north, parallel to the margin of the Colorado Plateau; but in southeastern Arizona, southern New Mexico, and northeastern Sonora, they trend northward, transverse to the edge of the Plateau. The mountains rise abruptly from plains or valleys, the margins of which in many places are pediments cut on hard rock. Some of the plains form closed basins (bolsons, playas), but most of them are drained. The Basin and Range province in Arizona is divisible into the Mountain Region and the Desert Region- (PIs. I and II). The Mountain Region forms a belt 60 to 100 miles wide that contains most of the large ore deposits. Its longest range measures about 55 miles, the widest 20 miles, and the highest peak more than 10,000 feet above sea level or 7,000 feet above adjacent valleys or plains. Broad plain-forming valleys are exceptional, but several with maximum widths of 20 to more than 30 miles appear in the southeastern portion. 136 p.Additional Links
https://library.azgs.arizona.edu/Language
enSeries/Report no.
Bulletin No. 145Geological Series No. 12