Alaska Mineral Resources

U.S. Geological Survey
Open-File Report 2006-1175
Version 1.0

Aqueous Geochemical Data from the Analysis of Stream Water Samples Collected in August 2004—Taylor Mountains 1:250,000 Scale Quadrangle, Alaska

By Bronwen Wang, Seth Mueller, Elizabeth Bailey, and Greg Lee

thumbnail view of map showing that the Taylor Mountains quad is in southwestern Alaska about half way between Anchorage and the Bering Sea

We report on the chemical analysis of water samples collected from the Taylor Mountains 1:250,000 quadrangle. Samples were collected as part of the multi-year U.S. Geological Survey's project -- Geologic and Mineral Deposit Data for Alaskan Economic Development. Data presented here are from water samples collected primarily in the northeastern part of the Taylor Mountains quadrangle. The data include samples taken from the Taylor Mountains C1, C2, D1, D2, and D4 1:63,360 scale quadrangles. The data are being released at this time with minimal interpretation. Site selection was based on a regional sampling strategy that focused on first and second order drainages. Water sampling site selection was based on landscape parameters that included physiography, wetland extent, lithological changes, and the cursory field review of the mineralogy from the pan concentrates. Stream water in the Taylor Mountians quadrangle is dominated by bicarbonate (HCO3-), though in a few samples more than 50% of the anionic charge can be attibuted to sulfate ( SO42-). The major-cation chemistry range from Ca/Mg dominated to a mix of Ca/Mg/Na+K. Good agreement was found between the major cation and anions in the duplicate samples. Many trace elements were at or near the method detection limit in these samples but good agreement was found between duplicate samples for elements with detectable concentrations. Major ion concentrations were below detection in all field blanks and the trace elements concentrations generally were below detection. However, Ta (range 0.9 -.1 ug/L) and Zn (1 to 3.5 ug/L) were detected in all blanks and Ba ( 0.24 ug/L) and Th (0.2 ug/L) were detected in one blank. There was good agreement between dupilicate total- and methyl- mercury and DOC samples; however, total mercury, methyl-mercury and dissolve organic carbon (DOC) were detected in the blank at 2.35 ng/L, 0.07 ng/L and 0.57 mg/L, respectively.

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Also of interest

USGS Open-File Report 2006-1070 Major- and Trace-Element Concentrations in Rock Samples Collected in 2004 from the Taylor Mountains 1:250,000-scale Quadrangle, Alaska, by Edward P. Klimasauskas, Marti L. Miller, Dwight C. Bradley, Sue M. Karl, James F. Baichtal, and Robert B. Blodgett.

USGS Open-File Report 2006-1306 Major- and Trace-Element Concentrations in Rock Samples Collected in 2005 from the Taylor Mountains 1:250,000-scale Quadrangle, Alaska, by Edward P. Klimasauskas, Marti L. Miller, Dwight C. Bradley, Tom K. Bundtzen, and Travis L. Hudson.

USGS Open-File Report 2006-1361 Aqueous Geochemical Data From the Analysis of Stream-Water Samples Collected in June and July 2005—Taylor Mountains 1:250,000 Scale Quadrangle, Alaska, by Bronwen Wang, Seth Mueller, Sarah Stetson, Elizabeth Bailey, and Greg Lee.

For questions about the content of this report, contact Bronwen Wang.

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