Alaska Volcano Observatory - Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6

OLD CROW TEPHRA ACROSS EASTERN BERINGIA: A SINGLE CATACLYSMIC ERUPTION AT THE CLOSE OF MARINE ISOTOPE STAGE 6

Preece, S.J., Pearce, N.J.G., Westgate, J.A., Froese, D.G., Jensen, B.J.L., and Perkins, W.T., 2011, Old Crow tephra across eastern Beringia: a single cataclysmic eruption at the close of Marine Isotope Stage 6: Quaternary Science Reviews, v. 30, p. 2069-2099, doi:10.1016/j.quascirev.2010.04.020 .

DATA TABLES *Not all tables in a publication may be listed. Not all tables from a publication have data entered in the database.

4031: Major-element composition of glass shards in Old Crow tephra samples, wt.%.

View table data ::

Download table data (.csv)

* Notes: Analyses for sites # 11, 19, 25 and 26 performed using a JEOL 8900 with all other analyses performed using a Cameca SX-50. Standard deviation is number in brackets. FeOt, total Fe as FeO; n, number of analyses. Average composition based on the following samples: Type locality (UT1),Goodnews Bay (UT1407); Togiak Bay (UT1434), Hagemeister Island (UT1577); Holitna (UT613); Imruk Lake (UT371); Baldwin Pen. (UT976), NK26B (UT1714); NK29A (UT1718); Hogatza Mine (UT718); Ky-11 (UT1833, UT1834a, UT1834b, UT1834c, UT1834d); Palisades (UA1124, UA1198); Halfway House (UT815, UT896, UT897, UT898, UT899, UT900, UT901); Eva (UT388, UT410, UT828, UT1727, UT1730, UT1731, UT1733);West Dawson (UT420); Birch Hill (UT1002); Sheep Ck. Valley (UA368); Gold Hill (UA348); Birch Creek (UT543); Chester Bluff (UA1099, UA1233, UA1211); Mile 293 Richardson Hwy. (UT524); Mirror Creek (UA339); Caribou Ck. 1 (UA1240); Caribou Ck. 2 (UA1274); Klondike (UT17); Old Crow Basin (UT50). *

4041: Tephra beds and pumice clasts with compositions similar to Old Crow tephra.

View table data ::

Download table data (.csv)

* Notes: Standard deviation in brackets; FeOt, total Fe as FeO; n, number of analyses. Average composition (wt.%) based on the following samples: Dawson (UA581, UA582, UA68, UA69, UT1056, UT1057, UT1059, UT1061, UT11, UT12, UT1488, UT1504, UT1593, UT1611, UT1612, UT1614, UT1626, UT1635, UT1776, UT1781, UT18, UT1910, UT20, UT2214, UT361, UT540, UT719), DL (UT1433), Togiak (UT1411), C2 pumice 1 (UT707), C2 pumice 2 (UT706), and C2 pumice 3 (UT709). All trace element analyses performed at Aberystwyth University. Solution ICP-MS analysis following HF/HClO 4 digestion was used for Dawson (average of UA582, UT1593, UT1611, UT1612, UT1635, UT 540, see Westgate et al., 2000; Pearce et al., 2004); DL (UT1433, Pearce et al., 2004); Togiak (UT1411, Pearce et al., 2004), C2 pumice 1 (UT707, this study). LA-ICP-MS was used for C2 pumice 2 (UT706) and C2 pumice 3 (UT709) using a Coherent MicroLas Excimer laser ablation system coupled to a Thermo Finnegan Element 2 sector field ICP-MS, following methods described in Pearce et al. (2004, 2007). nd = not determined. *

5331: Solution for ICP-MS trace-element composition of purified glass shards from Old Crow tephra samples, ppm.

View table data ::

Download table data (.csv)

SAMPLES