E/MJ : engineering and mining journal . M^ii^ :^?^, October 11, 1919 Engineering and Mining Journal 605 Ore Deposits of Utah*—Part I. Principal Mining Districts of the State Are Associated With Occurrences of Intrusive Rocks, The Orebodies Occurring as Replacement Deposits in Fissures—Metal Production Shows Increasing Output From Lode Mines Since 1870 By B. S. Butlek U. S. Geological Survey, Washington, THE object sought in this paper is the presenta-tion in a summary form of some of the featuresof the ore deposits of Utah that are discussedin greater detail in a report now in press on th
E/MJ : engineering and mining journal . M^ii^ :^?^, October 11, 1919 Engineering and Mining Journal 605 Ore Deposits of Utah*—Part I. Principal Mining Districts of the State Are Associated With Occurrences of Intrusive Rocks, The Orebodies Occurring as Replacement Deposits in Fissures—Metal Production Shows Increasing Output From Lode Mines Since 1870 By B. S. Butlek U. S. Geological Survey, Washington, THE object sought in this paper is the presenta-tion in a summary form of some of the featuresof the ore deposits of Utah that are discussedin greater detail in a report now in press on the OreDeposits of Utah, U. S. Geological Survey Profes-sional Paper 111, by B. S. Butler, G. F. Loughlin, V. , and others. For a more complete account ofthe geology, description of individual districts, forreferences to the extensive literature and other fea-tures, and for detailed evidence for the conclusions hereadvanced, those who are especially interested are re-ferred to that FIG. 1. OUTLINE OF THE LARGER STRUCTURAL,FEATURES OF UTAH The western part of Utah is in the Great Basin prov-ince; the southeastern part in the Plateau province;and the northeastern part includes the Uinta Moun-tains. The Great Basin province is separated fromareas to the east by a zone that may be designated theWasatch belt. A large part of the Basin province inUtah was above sea level and was undergoing erosionthroughout the Mesozoic era, the material removedbeing deposited in the area now occupied by the Pla-teau and Uinta provinces. In post-Cretaceous time •Publication sanctionecl by the Director of the V. S. Geologi-cal Survey. there was a general elevation of the entire region, andthis was greatest along certain east-west belts formingthe Uinta and Raft River ranges. Although other up-lifts, such as those of Tintic-Deep Creek and of Beav-er County, as shown in Fig. 1, are less prominent physi-ographically, they are equally important the uplifts of the
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Keywords: ., bo, bookcentury1900, bookdecade1910, booksubjectmineralindustries
