U.S. Geological Survey: Science for a Changing World - USGS visiaul identifier and link to main Web site at http://www.usgs.gov/

Plot of Y+Nb versus Rb for basement rocks from the field trip area. For more detailed explanation, contact Richard Tollo at rtollo@gwu.edu
Figure 6. Plot of Y+Nb versus Rb for basement rocks from the field trip area. Symbols are the same as in figure 4. Diagram modified after Pearce and others (1984).
U.S. Department of the Interior, U.S. Geological Survey
URL: https:// pubsdata.usgs.gov /pubs/circ/2004/1264/html/trip2/fig6.html
For more information, contact Richard Tollo
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