Appendix1_Geochemistry: Whole-rock, major-oxide XRF, and trace-element XRF and ICP-MS analyses of whole-rock samples and sediments rich in hydrothermally altered material from Chiginagak volcano (normalized to 100% without volatiles; all Fe converted to FeOT; original analytical totals given in the "Total-majors" column). Major oxides are reported as weight percent oxide, and trace elements are reported in parts per million (ppm). Also included are samples taken by J. Riehle and E. Yount (published in the Alaska Geochemical Database [Granitto and others, 2013]). Riehle and Yount samples with bold, italicized location information are those for which we have determined that the location provided in Granitto and others (2013) is incorrect (see notes in Location Description field for these samples). Appendix2_ArAr: 40Ar/39Ar age dating information for Chiginagak lavas.
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We thank Jessica Larsen for her helpful review and for providing expertise in geochemical data display. This work was made possible by cooperative agreements between the U.S. Geological Survey Volcano Hazards Program and the State of Alaska Division of Geological & Geophysical Surveys, including grants G16AC00054 and G16AC00165.
Geochronological and geochemical data rocks from these localities constrain the age and distribution of Mount Chiginagak lavas.
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| Data format: | ASCII tabular files |
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http://doi.org/10.14509/29769 |