Pale-white tephra 'couplet' that occurs approximately 140 cm below the surface. Two tephra layers separated by 0.5 cm of loess; each tephra layers is approximately 0.5 cm thick. Sharp contact with overlying loess and occurs within gray and tan mottled loess. Overlies tephras S851F(50 cm below) and G.
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|
|S851||61.6||-149.1||Fontana, M. R.||> 1450 ± 100 14C; 8881; Radiocarbon dated peat that occurs 60 cm below the surface and is two cm thick. All tephra in the stratigraphy at this station occurred below this peat.||-1800--||In the town of Palmer, Alaska, at the intersection of Beaver and Gloria streets. Two and a half m of loess exposed during foundation excavation for a housing development. Five tephra recorded in the stratigraphy at this location (one of which was a couplet), but only four were sampled. See Fontana (1988) for detailed stratigraphy. Coordinates provided as degrees/minutes and converted to decimal degrees; datum not provided, assumed to be NAD83.||Pale-white tephra 'couplet' that occurs approximately 140 cm below the surface. Two tephra layers separated by 0.5 cm of loess; each tephra layers is approximately 0.5 cm thick. Sharp contact with overlying loess and occurs within gray and tan mottled loess. Overlies tephras S851F(50 cm below) and G.||S851E||Tephra Fall||Cumulate||Glass||75.04||0.32||13.05||1.63||0.63||1.62||4.41||3.04||8881||EMP||1.63||Cl=0.23||EMP|
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