Red-brown tephra that occurs approximately 146 cm below the surface. The tephra has a total thickness of 10 cm, with the upper 5 cm appearing orange-red and the basal 5 cm appearing darker brownish-red. The 1-cm-thick peat underlying this tephra was radiocarbon dated at 3170+/-170 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||Geologic 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.||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 occurs approximately 146 cm below the surface. The tephra has a total thickness of 10 cm, with the upper 5 cm appearing orange-red and the basal 5 cm appearing darker brownish-red. The 1-cm-thick peat underlying this tephra was radiocarbon dated at 3170+/-170 yBP.||S852B-Pop.1||Tephra Fall||Cumulate||Glass||72.01||0.39||14.82||2.68||0.58||2.06||4.24||3||8881||EMP||2.68||Cl=0.23||EMP|