Sample taken at site B of Chi'ijee's Bluff, 1 km upstream from site A of Chi'ijee's Bluff. Tephra is a laterally extensive planar bed ~3 cm thick with locally diffuse upper contact but sharp lower contact that locally infills small rootlet casts. Occurs in finely laminated silt with abundant fine rootlets.
Permafrost response to last interglacial warming: field evidence from non-glaciated Yukon and 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|
|Chi'ijee's_Bluff||67.48333333||-139.9333333||Reyes, A. V.||124000 ± 10000 known unit; 10271; Age is approximate. Revised glass fission-track age with re-calibration reported in Preece and others (2011); four Old Crow Tephra sample glass fission-track ages (UT1434, UT613, UT501, UT613).||Four-km-long river exposure on the south bank of the Porcupine River in northern Yukon Territory, Canada. Approximately fifteen km downstream from the village of Old Crow. The bluff is comprised of middle Pliocene to latest Pleistocene alluvial and lacustrine sediments and is in the continuous permafrost zone, with permafrost about 60 m deep and active layer depths of 40-60 cm. Sites A, B, and C visited, see Figure 1d of Reyes and others (2010). Location coordinates provided as degrees/minutes/seconds in Reyes and others (2010) and converted to decimal degrees. Datum not provided, assumed to be NAD83.||Sample taken at site B of Chi'ijee's Bluff, 1 km upstream from site A of Chi'ijee's Bluff. Tephra is a laterally extensive planar bed ~3 cm thick with locally diffuse upper contact but sharp lower contact that locally infills small rootlet casts. Occurs in finely laminated silt with abundant fine rootlets.||UA1207||Tephra Fall||Cumulate||Glass||75.25||0.29||13.08||1.7||0.07||0.28||1.47||3.87||3.71||8023||EMP||1.7||Cl=0.28; H2O=4.91||EMP|
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