Geochemistry and Soils of the Big Smoky Valley Fens, Nevada

Journal of the Nevada Water Resources Association
By: , and 

Links

Abstract

Fens are groundwater-fed wetlands that can provide habitat for plants and animals. Due to anthropogenic activities and climate change, many fens around the world are at risk. This paper presents the results of a study of the hydrology and geochemistry of fens in Big Smoky Valley, central Nevada to support the Bureau of Land Management’s activities in the area. A water sample from the largest fen in the study area was analyzed for its water chemistry and compared to a nearby alluvial aquifer and hot spring. The high SiO2 concentration of the fen sample implies that the fen water may originate from geothermal water. A soil core was taken to analyze radiocarbon age and soil type. A majority of the core was composed of silt and clay interlayered with water-filled voids. Changes in the character of the clay with depth suggest that there may have been changes in the depositional environment over time. Radiocarbon dating of Ruppia seeds showed longevity of the fen, with the minimum 14C age of the core as 4,375±40 years. This paper provides reconnaissance-level information on the Big Smoky Valley fens, but further information would be needed to better understand the source of water to the fens or how the fen environment has changed over time with climate.

Study Area

Publication type Article
Publication Subtype Journal Article
Title Geochemistry and Soils of the Big Smoky Valley Fens, Nevada
Series title Journal of the Nevada Water Resources Association
DOI 10.22542/jnwra/2025/1/2
Volume 2025
Issue Winter
Publication Date December 01, 2025
Year Published 2025
Language English
Publisher Nevada Water Resources Association
Contributing office(s) Nevada Water Science Center
Description 14 p.
First page 27
Last page 40
Country United States
State Nevada
Other Geospatial Big Smoky Valley
Additional publication details