Alaska Volcano Observatory - Distribution, stratigraphy, petrochemistry and palaeomagnetism of the late Pleistocene Old Crow tephra in Alaska and the Yukon

DISTRIBUTION, STRATIGRAPHY, PETROCHEMISTRY AND PALAEOMAGNETISM OF THE LATE PLEISTOCENE OLD CROW TEPHRA IN ALASKA AND THE YUKON

Westgate, J. A., Walter, R. C., Pearce, G. W., and Gorton, M. P., 1985, Distribution, stratigraphy, petrochemistry and palaeomagnetism of the late Pleistocene Old Crow tephra in Alaska and the Yukon: Canadian Journal of Earth Sciences [Journal Canadien des Sciences de la Terre], v. 22, n. 6, p. 893-906.

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

3551: Average composition of glass shards from Old Crow tephra

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* Notes: Major-element analyses (in weight percent, water free) were made on an ETEC Autoprobe fitted with an Ortec Si(Li) detector. Microprobe operated at 20 kV with a beam current set to given 3000 counts/s on willemite (~90 nA); sample current ~150 pA; counting time 100s; beam diameter ~1 micron. Data reduction by a modified version of PESTRIPS. Total Fe is given as FeO. The mean +/- SD is given, and n = number of analyses. Glass standards UA5831, CAM 66, and KN-18 were used. *

5391: Instrumental neutron activation analyses of glass separates of the Old Crow tephra

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5401: Trace-element concentrations in glass from some widespread felsic tephra beds in Alaska and the Yukon

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SAMPLES

UT361
UT339
UT338
UT502
UT506
UT510
UT388
UT348
UT368
UT543
UT524
UT371
Westgate_1985_Old_Crow_Average

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