The Green River Formation that characterizes much of the Green River Basin hosts thick sequences of organic carbon-rich shale (oil shale), extractable pockets of natural gas, and bedded trona (Na3[CO3][HCO3] × 2H2O), the extraction or mining of which can mobilize elements that could potentially affect the function and health of ecosystems in the basin. In an ongoing effort to develop methods for assessing element mobility in the basin, the USGS has sampled soils from the three main members of the Green River Formation (Laney Shale, Wilkins Peak, and Tipton Shale), and contracted with XRAL Laboratory, Canada, to conduct mass spectrometry analyses of the soils for bulk and trace elements. Soils were extracted by using...
