Red-brown tephra that is 5.5 cm thick and occurs approximately 50 cm below a thick organic mat of decaying plants, loess, and peat. Within this tephra, a piece of charcoal was radiocarbon dated at 1030+/-150 yBP.
Holocene tephrochronology of the Matanuska Valley, 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|
|S852||61.6||-149.1||Fontana, M. R.||1030 ± 150 14C; 8881; Age is approximate. Radiocarbon carbon date of charcoal layer (S852FP) within tephra S852F.||At the intersection of the Glenn Highway and West Dolphin avenue, 0.8 km north of Palmer, Alasksa. Seven tephra recorded in the stratigraphy at this small roadcut, one of which was a couplet and all of which were analyzed. See Fontana (1988) for detailed stratigraphy. Coordinates provided as degrees/minutes and converted to decimal degrees; datum not provided, assumed to be NAD83.||Red-brown tephra that is 5.5 cm thick and occurs approximately 50 cm below a thick organic mat of decaying plants, loess, and peat. Within this tephra, a piece of charcoal was radiocarbon dated at 1030+/-150 yBP.||S852F||Tephra Fall||Cumulate||Glass||76.79||0.17||13||1.74||0.15||1.1||3.79||3.11||8881||EMP||1.74||Cl=0.15||EMP|
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