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Geochemical Landscapes

Geochemical Landscapes of Alaska

Task Contact: Larry Gough | Objectives | Task Products


In 2001, the USGS published new geochemical maps for the conterminous United States based on a low-density soil survey conducted by H.T. Shacklette during the 1960s and 1970s. A similar low-density data set, collected by L.P. Gough and R.C. Severson in the 1980s, exists for Alaska. However, the only geochemical maps published are black-and-white, point-symbol maps released in 1988. We proposed to generate state-of-the-art full-color geochemical maps using the same mapping algorithm used to produce the maps of the conterminous U.S. In addition, we investigated opportunities to conduct additional soil-related geochemical landscape studies in Alaska.

The objectives of this task were to 1) produce a USGS professional paper (similar to USGS Professional Paper 1648) to show the geochemical landscape of Alaska based on the low-density soil survey conducted by Gough and Severson; and 2) identify opportunities to conduct collaborative soil geochemistry studies in Alaska.




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