This thin bed (UA 1965; 0.2cm thick) is known only from Lone Spruce Pond in the Ahklun Mountains. The tephra bed is composed predominantly of pumice with large vesicles, and some blocky pumice; tricuspate and bubble-wall shards are present, but in lower abundance than in Tephra A from the Ahklun Mountains.
Late Quaternary tephrostratigraphy, Ahklun Mountains, SW Alaska
|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|
|Ahklun_Mountains_Regional_Tephra||59.6||-160.39998||Kaufman, D. S.||4745 ± 133 14C AMS; 7993; Age is approximate. Date derived from age model (using AMS dates) of Lone Spruce Pond, in Kaufman and others (2012).||Ahklun Mountains, southwest Alaska; glass compositions are averages calculated from analyses of multiple correlated tephra present in lacustrine cores from the area. Individual sample IDs (analyses of which contribute to the average tephra bed composition) are noted in the sample descriptions.||This thin bed (UA 1965; 0.2cm thick) is known only from Lone Spruce Pond in the Ahklun Mountains. The tephra bed is composed predominantly of pumice with large vesicles, and some blocky pumice; tricuspate and bubble-wall shards are present, but in lower abundance than in Tephra A from the Ahklun Mountains.||Ahklun Mountains-LS-4.7ka-Tephra_average||Tephra Fall||Cumulate||Glass||71.54||0.44||14.85||2.62||0.13||0.42||1.64||4.95||3.23||7993||EMP||2.62||Cl=0.18; H2O=3.41||EMP|
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