Geology topics

Alan H. Welch

Publications and source records attributed to Alan H. Welch.

20 records · Page 2Linked to original sources

USGS1986

Data on ground-water quality for the Lund 1 degree x 2 degree quadrangle, eastern Nevada

Water quality data for groundwater were compiled for the Lund 1 degree x 2 degree quadrangle which covers a portion of eastern Nevada. Chemical characteristics of the water are shown on a map (at a scale of 1:250,000) and on trilinear diagrams for the major ions. The data for the area are also presented in a table. (USGS)

Open-File Report↗

USGS1981

The hydrothermal system in southern Grass Valley, Pershing County, Nevada

Southern Grass Valley is typical extensional basin in the Basin and Range province. Leach Hot Springs, in the southern part of the valley, represents the discharge end of an active hydrothermal flow system with an estimated deep aquifer temperature of 163-173C. This report discusses results of geologic, hydrologic, geophysical and geochemical investigations used in an attempt to construct an internally consistent model of the system. (USGS)

Open-File Report↗