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Worthington Mountains
The Worthington Mountains is a small 12 mile long north-south trending mountain range in northwestern Lincoln County, Nevada.〔〔 The range is bounded by the Sand Spring Valley to the west and Garden Valley to the east. The Quinn Canyon Range lies to the northwest, the Golden Gate Range lies to the east and the Timpahute Range lies to the south and southeast.〔
The range has two prominent peaks: Worthington Peak at near the north end and Meeker Peak at near the south end. The surrounding basins have elevations of .〔
==Geology and mining==
The Freiberg district on the northeast end of the range, located northeast of Worthington Peak, has had a long history of mining. The bedrock in the area is Pogonip Group limestone and dolomites of Ordovician age which strike north south and dip 20° to the west. The sedimentary rocks have been faulted and intruded by numerous felsic intrusives. The old Freiberg mine was worked for gold and silver starting in 1865. Later the New Freiberg mine was worked with underground and open pit methods for silver, lead, zinc and copper from 1919 through 1948.〔Tingley, Joseph P., ''The Mineral Resources of the Timpahute Range 30x60 Minute Quadrangle,'' Nevada Bureau of Mines and Geology, Report 46, 1991, pp 6-10〕
The Upper Devonian Guilmette Formation outcrops in the southern portion of the range. The Guilmette contains exposures of the Alamo Breccia related to the Alamo Impact which is approximately centered in the Timpahute Range some to the south.〔 Leroux, Hugues; John E. Warme and Jean-Claude Doukhan; ''Shocked quartz in the Alamo breccia, southern Nevada: Evidence for a Devonian impact event,'' Geology, 1995, v. 23, pp. 1003-1006 〕
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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