Skip Links

USGS - science for a changing world

Data Series 532

Stream-Sediment Samples Reanalyzed for Major, Rare Earth, and Trace Elements from Seven 1:250,000-Scale Quadrangles, South-Central Alaska, 2007–09

By Bruce M. Gamble, Elizabeth A. Bailey, Jeanine M. Schmidt, Nora B. Shew, Keith A. Labay, Matthew Granitto, Richard M. O’Leary, and David E. Detra


During the 1960s through the 1980s, the U.S. Geological Survey conducted reconnaissance geochemical surveys of drainage basins throughout most of the Iliamna, Lake Clark, Lime Hills, and Talkeetna 1:250,000-scale quadrangles and parts of the McGrath, Seldovia, and Tyonek 1:250,000-scale quadrangles in Alaska. These geochemical surveys provide data necessary to assess the potential for undiscovered mineral resources and provide data that may be used to determine regional-scale element baselines. This report provides new data for 1,075 of the previously collected stream-sediment samples. The new analyses include a broader spectrum of elements and provide data that are more precise than the original analyses. All samples were analyzed for arsenic by hydride generation atomic absorption spectrometry, for gold, palladium, and platinum by inductively coupled plasma-mass spectrometry after lead button fire assay separation, and for a suite of 55 major, rare earth, and trace elements by inductively coupled plasma-atomic emission spectrometry and inductively coupled plasma-mass spectrometry after sodium peroxide sinter at 450 degrees Celsius.

First posted August 20, 2010

For additional information contact:
Director, Alaska Science Center
U.S. Geological Survey
4210 University Drive
Anchorage, Alaska 99508

Part or all of this report is presented in Portable Document Format (PDF); the latest version of Adobe Reader or similar software is required to view it. Download the latest version of Adobe Reader, free of charge.

Suggested citation:

Gamble, B.M., Bailey, E.A., Schmidt, J.M., Shew, N.B., Labay, K.A., Granitto, Matthew, O’Leary, R.M., and Detra, D.E., 2010, Stream-sediment samples reanalyzed for major, rare earth, and trace elements from seven 1:250,000-scale quadrangles, south-central Alaska, 2007–09: U.S. Geological Survey Data Series 532, 4 p.




Methods of Study

References Cited

Appendix A. Major, Rare Earth, and Trace Element Data for 1,075 Stream-Sediment Samples Previously Collected by the U.S. Geological Survey in the Iliamna, Lake Clark, Lime Hills, McGrath, Seldovia, Talkeetna, and Tyonek 1:250,000-Scale Quadrangles, Alaska, 2007–09

Accessibility FOIA Privacy Policies and Notices logo U.S. Department of the Interior | U.S. Geological Survey
Page Contact Information: Contact USGS
Page Last Modified: Monday, November 28, 2016, 03:35:20 PM