Masters Theses


"The general area of the Searchlight mining district has been the object of various studies by geologists since 1861. The Searchlight district is located in southern Clark County, Nevada in the eastern part of the Mojave Desert at the southern end of the Eldorado Mountains. Southern Clark County is characterized by a lack of Paleozoic and Mesozoic rocks. A Precambrian complex of rocks mostly gneiss in the southwest corner of the district is non-conformably overlain by Tertiary extrusive rocks about 8,500 feet (2,590 meters) thick consisting of andesite, basalt, rhyolite, and pyroclastics. Both the gneiss and volcanic assemblage were intruded by granite and quartz monzonite plutons and these in turn by dikes from aplitic to lamprophyric in character. The Tertiary extrusive rocks are parts of the Patsy Mine and the younger unconformable Mount Davis formations. These have been tilted westward up to 80 degrees. They retain rough north-south strikes. A gamma ray spectrometric survey, mainly over the Searchlight pluton, was completed. Areas of potassic alteration were generally outlined by the survey. The Searchlight mining district was discovered in 1897. Values of gold, silver, copper, and lead produced exceed $35 million in 1977 value through 1962. No production has been reported since then. The mineralogy, textural, and structural characteristics of the mineral deposits mapped suggest that they are epithermal deposits"--Abstract, page ii.


Proctor, Paul Dean, 1918-1999

Committee Member(s)

Kisvarsanyi, Geza
Clifford, Roger K.


Geosciences and Geological and Petroleum Engineering

Degree Name

M.S. in Geology


University of Missouri--Rolla

Publication Date



viii, 85 pages

Note about bibliography

Includes bibliographical references (pages 75-77).

Geographic Coverage

Clark County, Nevada


© 1977 John Stewart Bown, All rights reserved.

Document Type

Thesis - Open Access

File Type




Thesis Number

T 4297

Print OCLC #


Bown_John_Plate_1.tif (535815 kB)
Geologic Map of the Searchlight Mining District, Clark County, Nevada

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