Geologic Map of the Nelson SW Quadrangle, Clark County, Nevada, NBMG M134

Resource Abstract:

1:24,000 scale Geologic Map of the Nelson Quadrangle, Clark County, Nevada. Nevada Bureau of Mines Map 134. Detailed Geologic Mapping By Jame s E . Faulds, John W. Bell, and Eric L. Olson in 2002. Field work done 1999. Map includes two cross sections and 42 geologic units. The quadrangle includes part of the Highland range, Eldorado Valley, and Piute Valley. It contains excellent exposures of early to middle Miocene volcanic and sedimentary rocks, the upper part of the ~16.6 Ma Searchlight. Mining district. The Miocene section rests nonconformably on Early Proterozoic gneiss. As a result of the middle Miocene extension, Tertiary strata are moderately to steeply tilted and cut by complex arrays of normal faults. Flat-lying Quaternary alluvial-fan deposits dominate Eldorado and Piute Valleys and onlap tilted Miocene strata in the Highland Range. The GIS work was in support of the U.S. Geological Survey COGEOMAP program. Office Reviewers: Frank Hillemeyer, La Cuesta International, Inc., Kingman, AZ.; Jonathan Miller, Dept. of Geology, San Jose State University, San Jose, CA.; Alan Ramelli, NBMG; Eugene Smith, Dept. of Geoscience, UNLV. Field Reviewers: Frank Hillemeyer, La Cuesta International, Inc., Kingman, AZ.; Werner Hellmer, Dept. of Building, Clark County; Ryan Murphy, Dept. of Geological Sciences , University of Nevada; John Peck, Consulting Geologist, Las Vegas , NV.; Jonathan Price, NBMG; Alan Ramelli, NBMG. The geologic mapping was supported by the U.S. Geological Survey STATEMAP Program (Agreement No. HQ-AG-2036) and a grant from the National Science Foundation (E AR 98-96032). The 40Ar/39Ar dates were obtained through geochronology labs at the U.S. Geological Survey in Denver, for which we thank Steve Harlan, and the New Mexico Bureau of Mines, for which we thank Bill McIntosh and Matt Heizler. We greatly appreciated the hospitality of several landowners in the area, including Barney and Elaine Reagan, Gene Lambert, and John Kuyger. We also thank the Lake Mead National Recreation Area for providing housing during part of this study. Base map: U.S. Geological Survey Nelson SW 7.5' Quadrangle. To download and view this map resource, map text, and associated GIS zipped data-set, please see the links provided.

Citation

Title Geologic Map of the Nelson SW Quadrangle, Clark County, Nevada, NBMG M134

publication  Date   2002-01-01T00:00:00

cited responsible party - originator

individual Name James E. Faulds

organisation Name  Nevada Bureau of Mines and Geology, Professor

position Name missing

Contact information

Telephone

Voice 775-682-8751

Address

UNR, MS 178, Reno, NV, 89557-0178

electronic Mail Address jfaulds@unr.edu

cited responsible party - originator

individual Name John W. Bell

organisation Name  Nevada Bureau of Mines and Geology, Research Engineering Geologist

position Name missing

Contact information

Telephone

Voice 775-784-1939

Address

UNR, MS 178, Reno, NV, 89557

electronic Mail Address jbell@unr.edu

cited responsible party - originator

individual Name Eric L. Olson

organisation Name  Nevada Bureau of Mines and Geology

position Name missing

Contact information

Telephone

Voice 775-784-6691

Address

UNR, MS 178, Reno, NV, 89557

electronic Mail Address nbmg@unr.edu

Topic Category:  geoscientificInformation