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Text Description: The composition reported here is the average of 27 Dawson tephra samples: UA581, UA582, UA68, UA69, UT1056, UT1057, UT1059, UT1061, UT11, UT12, UT1488, UT1504, UT1593, UT1611, UT1612, UT1614, UT1626, UT1635, UT1776, UT1781, UT18, UT1910, UT20, UT2214, UT361, UT540, UT719 References: ![]() |
StationID | Latitude | Longitude | Geologist | DateVisited | Age Info | Volcano | Eruption | Location Description | Text Description | Sample ID | Sample Type 1 | Sample Type 2 | Final Unit | Material | Coeff | SiO2 | TiO2 | Al2O3 | FeOT | MnO | MgO | CaO | Na2O | K2O | P2O5 | Total-majors | REF majors | METH majors | Fe2O3/Fe203T orig | FeO/FeOT orig | Volatiles csv | METH volatiles | Cs | Rb | Ba | Sr | La | Ce | Pr | Nd | Sm | Eu | Gd | Tb | Dy | Ho | Er | Tm | Yb | Lu | Y | Zr | Nb | Hf | Ta | Pb | Th | U | Sc | V | Cr | Fe | Co | Ni | Cu | Zn | Ga | Mo | As | Na | K | Ref trace1 | METH trace1 | Rb | Ba | Sr | La | Ce | Nd | Sm | Eu | Gd | Dy | Er | Yb | Lu | Y | Zr | Nb | Pb | Th | U | Sc | Ti | V | Cr | Ni | Cu | Zn | Ga | Ref trace2 | METH trace2 | Light csv | Halogen csv | other major csv | other lile csv | other ree csv | other hfse csv | other hpe csv | other tm csv | other misc csv | |
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Preece_2011_Dawson_tephra_average | Preece, S. J. | 25355 ± 136 known unit; 10281; Age is approximate. Weighted mean of two samples of graminoid leaves from in situ surface below tephra (original dates reported in Froese and others 2006; weighted mean reported in Preece and others 2011). | -24050-- | Glass geochemical data reported here is an average calculated from analyses of multiple Dawson tephra across different stratigraphic locations in Alaska. Individual sample IDs are noted in the sample descriptions. See Preece et al. (2011) Table 7 footnote. | The composition reported here is the average of 27 Dawson tephra samples: UA581, UA582, UA68, UA69, UT1056, UT1057, UT1059, UT1061, UT11, UT12, UT1488, UT1504, UT1593, UT1611, UT1612, UT1614, UT1626, UT1635, UT1776, UT1781, UT18, UT1910, UT20, UT2214, UT361, UT540, UT719 | Preece_2011_Dawson_tephra_average | Tephra Fall | Cumulate | Glass | 74.19 | 0.27 | 13.68 | 2.05 | 0.07 | 0.21 | 1.26 | 4.43 | 3.64 | 10271 | EMP | 2.05 | Cl=0.21; H2O=2.15 | EMP | 5.13 | 85 | 920 | 73 | 19.7 | 40.6 | 5.86 | 23.4 | 5.82 | 0.95 | 6.33 | 1.07 | 6.76 | 1.46 | 4.31 | 0.76 | 4.64 | 0.8 | 39.6 | 299 | 7.31 | 8.43 | 0.5 | 7.5 | 4.02 | 10271 | ICP |
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