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Text Description: Lowest tephra bed at station DK96-33. Sample UT1408 is of the same tephra bed. This tephra marks the base of the third lithofacies unit at this station, and is 5.1 m above sea level. Ranges up to 5 cm thick and shows two discrete layers of light-tan, silt to medium sand grains separated by up to 1 cm of black silt in some areas. The lower layer is thicker and finer grained whereas the upper layer is coarser and pumice and phenocryst rich. Sample is dominated by low-vesicular pumice and has similar mineralogy and composition to samples UT1408 and UT1435. 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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DK96-33 | 58.9825 | -161.3575 | Kaufman, D. S. | 0000-00-00 | < 119000 ± 10000 TL; 10631; Sample number UIC-688, sediment from 4.1 m above sea level at station DK96-33, dated by optically stimulated thermoluminescence. Tephra from stratigraphically above this date and thus it provides a maximum age estimate. | Togiak Bay site, same location as station DK95-22. Coastal exposure at Togiak Bay, on the northwestern edge of Bristol Bay in the eastern Bering Sea, southwestern Alaska. Eighteen-m-thick sequence of interstratified marine, lacustrine, fluvial, glacial, volcanic, and organic deposits. Location coordinates provided as degrees/minutes/seconds and converted to decimal degrees. Datum not provided, assumed to be NAD83. | Lowest tephra bed at station DK96-33. Sample UT1408 is of the same tephra bed. This tephra marks the base of the third lithofacies unit at this station, and is 5.1 m above sea level. Ranges up to 5 cm thick and shows two discrete layers of light-tan, silt to medium sand grains separated by up to 1 cm of black silt in some areas. The lower layer is thicker and finer grained whereas the upper layer is coarser and pumice and phenocryst rich. Sample is dominated by low-vesicular pumice and has similar mineralogy and composition to samples UT1408 and UT1435. | UT1409 | Tephra Fall | Cumulate | Glass | 70.75 | 0.57 | 14.78 | 3.1 | 0.1 | 0.63 | 2.39 | 4.56 | 2.95 | 7423 | EMP | 3.1 | Cl=0.16; H2O=2.42 | EMP | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
DK96-33 | 58.9825 | -161.3575 | Kaufman, D. S. | 0000-00-00 | < 119000 ± 10000 TL; 10631; Sample number UIC-688, sediment from 4.1 m above sea level at station DK96-33, dated by optically stimulated thermoluminescence. Tephra from stratigraphically above this date and thus it provides a maximum age estimate. | Togiak Bay site, same location as station DK95-22. Coastal exposure at Togiak Bay, on the northwestern edge of Bristol Bay in the eastern Bering Sea, southwestern Alaska. Eighteen-m-thick sequence of interstratified marine, lacustrine, fluvial, glacial, volcanic, and organic deposits. Location coordinates provided as degrees/minutes/seconds and converted to decimal degrees. Datum not provided, assumed to be NAD83. | Lowest tephra bed at station DK96-33. Sample UT1408 is of the same tephra bed. This tephra marks the base of the third lithofacies unit at this station, and is 5.1 m above sea level. Ranges up to 5 cm thick and shows two discrete layers of light-tan, silt to medium sand grains separated by up to 1 cm of black silt in some areas. The lower layer is thicker and finer grained whereas the upper layer is coarser and pumice and phenocryst rich. Sample is dominated by low-vesicular pumice and has similar mineralogy and composition to samples UT1408 and UT1435. | UT1409 | Tephra Fall | Cumulate | Glass | 70.72 | 0.58 | 14.65 | 3.22 | 0.13 | 0.65 | 2.45 | 4.48 | 2.96 | 10631 | EMP | 3.22 | Cl=0.16; H2O=1.6 | EMP |
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