Analytical results and sample locality map of stream-sediment, heavy mineral-concentrate, rock, and water samples from the Skedaddle (CA-020- 612) and Dry Valley Rim (CA-020-615) Wilderness Study Areas, Lassen County, California, and Washoe County, Nevada

Abstract

Analytical results and sample locality map of stream-sediment, heavy-mineral-concentrate, rock, and water samples from the Skedaddle (CA-020-612) and Dry Valley Rim (CA-020-615) Wilderness Study Areas,

Chemical Fractionation of Selected Nevada Soils Adjacent to the Sierra Army Depot

“…Surface horizons of Jaybee and Trocken show greater Ag TE , Ba TE , Cd TE , Co TE , Cr TE , Cu TE , Hg TE , Mn TE , Ni TE , Pb TE , V TE , Tl TE , and Zn TE than soil‐type specific (Epot, fine‐silty, mixed, superactive, mesic Typic Natrargids, and Calneva, fine, smectitic, mesic Typic Natrargids) and facility‐wide maximum background concentrations, with Cd TE , Cu TE , Hg TE , Pb TE , Tl TE , and Zn TE also greater than regional maximum background concentrations (U.S. Army Environmental Center, 1996), suggesting these trace element levels are in part potentially associated with site activities. Levels of Ba TE , Co TE , Cu TE , and Mn TE in surface horizons of Jaybee and Trocken may be related in part to their naturally occurring levels, as evidenced in the bordering Skedaddle Mountains wilderness study area (Adrian et al, 1987) and Western Smoke Creek Desert (Sturmer et al, 2007). Geologic and geochemical evidence also suggest this area had potential enrichment of Ag, Au, Hg, and Sb (Diggles et al, 1988).…”

“…Emitted particles in the smaller particle-size fraction (e.g., <2 mm) generally tend to be dispersed farther and have higher total metal contents (Page et al, 1979;Hughes et al, 1980;Nriagu, 1984;Tiller, 1989). (Adrian et al, 1987) and Western Smoke Creek Desert (Sturmer et al, 2007). Geologic and geochemical evidence also suggest this area had potential enrichment of Ag, Au, Hg, and Sb (Diggles et al, 1988).…”