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Geologic map of south-central Yucca Mountain, Nye County, Nevada

Miscellaneous Field Studies Map 2422

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Abstract

New 1:6,000-scale geologic mapping in a 20-square-kilometer area near the south end of Yucca Mountain, Nevada, which is the proposed site of an underground repository for the storage of high-level radioactive wastes, substantially supplements the stratigraphic and structural data obtained from earlier, 1:24,000-scale mapping. Principal observations and interpretations resulting from the larger scale, more detailed nature of the recent investigation include: (1) the thickness of the Miocene Tiva Canyon Tuff decreases from north to south within the map area, and the lithophysal zones within the formation have a greater lateral variability than in areas farther north; and (2) fault relations are far more complex than shown on previous maps, with both major (block-bounding) and minor (intrablock) faults showing much lateral variation in (a) the number of splays and (b) the amount, distribution, and width of anastomosing breccia and fracture zones.

Geospatial Extents

Additional Publication Details

Publication type:
Report
Publication Subtype:
USGS Numbered Series
Title:
Geologic map of south-central Yucca Mountain, Nye County, Nevada
Series title:
Miscellaneous Field Studies Map
Series number:
2422
Edition:
Version 1.0
Year Published:
2004
Language:
ENGLISH
Description:
1 over-size sheet; 1 26-page pamphlet
Scale:
6000