Geochemistry of altered and mineralized rocks from the Morey and Fandango Wilderness Study Areas, northern Hot Creek Range, Nye County, Nevada

J. T. Nash; D. A. John; M.J. Malcolm; Paul H. Briggs; J.G. Crock

doi:10.3133/ofr86410

Geochemistry of altered and mineralized rocks from the Morey and Fandango Wilderness Study Areas, northern Hot Creek Range, Nye County, Nevada

Open-File Report 86-410

By: J. T. Nash, D. A. John, M.J. Malcolm, Paul H. Briggs, and J.G. Crock

https://doi.org/10.3133/ofr86410

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Abstract

The U.S. Geological Survey and the St. Johns River Water Management District are investigating the hydrogeology of the Floridan aquifer system. An essential element of this investigation is the design and construction of a monitor well network in the lower saline water-bearing zone which occurs at about 2,000 ft below land surface. During 1985, a well near Ponte Vedra in northeast St. Johns County was completed into the lower saline water-bearing zone at a depth of 1,980 to 2,035 ft below land surface. This well and other wells drilled under this or other programs will be used to monitor water levels and water chemistry of the lower saline zone. Chloride concentrations in water above the lower saline zone ranged from 14 to 270 mg/L and specific conductance ranged from 450 to 1,440 micromhos/cm c. In the lower zone, chloride concentrations were as much as 16,210 mg/L and specific conductance as much as 46,000 micromhos per centimeter. Aquifer head and artesian flow from the well generally increased with depth. Water temperatures also increased from 23 C in the upper part of the aquifer to more than 28 C in the lower saline zone. (USGS)

Suggested Citation

Nash, J., John, D., Malcolm, M., Briggs, P., Crock, J., 1986, Geochemistry of altered and mineralized rocks from the Morey and Fandango Wilderness Study Areas, northern Hot Creek Range, Nye County, Nevada: U.S. Geological Survey Open-File Report 86-410, 52 p. :maps ;28 cm., https://doi.org/10.3133/ofr86410.

ISSN: 2331-1258 (online)

Additional publication details
Publication type	Report
Publication Subtype	USGS Numbered Series
Title	Geochemistry of altered and mineralized rocks from the Morey and Fandango Wilderness Study Areas, northern Hot Creek Range, Nye County, Nevada
Series title	Open-File Report
Series number	86-410
DOI	10.3133/ofr86410
Year Published	1986
Language	ENGLISH
Publisher	U.S. Geological Survey,
Description	52 p. :maps ;28 cm.