Histograms and correlation table for selected elements in samples of the ash of ground birch leaves from the Tanacross Quadrangle, Alaska

These histograms and correlation table show the distribution and abundance of, and correlations between, the populations of 21 elements in the ash of ground birch (Betula rotundifolia Sarg.) leaves collected throughout most of the Tanacross 1:250,000-scale quadrangle. The samples were collected during reconnaissance geochemical studies as part of the U.S. Geological Survey's Alaskan Mineral Resource Assessment Program. Related data for ground birch are presented in other reports (Day, Curtin, and Tripp, 1979 a,b,c), and background information on the mineral resource assessment of the Tanacross quadrangle is presented in a U.S. Geological Survey Circular (Foster and others, 1976).