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SAMPLE INFO : UT1633
Sample ID:UT1633
Station ID:Midnight_Dome_Terrace
Latitude:64.05
Longitude:-139.41
Datum:NAD83
Sample Type 1:Tephra Fall
Text Description:
Pods of reworked tephra occurring in the middle interglacial silt bed as well as in the immediately underlying loess (both UT1633 and UT1552). Type I beds have a low crystal content, abundant bubble-wall glass shards, pumice with large vesicles, and very small amounts of brown glass. Feldspar, orthopyroxene, and clinopyroxene are abundant with minor amounts of amphibole, magnetite, ilmenite, apatite, and zircon. From Preece et al. (2011): 5 cm thick; bubble-wall shards and pumice; in deformed peaty, organic rich silt; ~5.5 m above basal gravel and sand; field name 299h. Sample collected by J. A. Westgate, 1999.

References:
A catalogue of late Cenozoic tephra beds in the Klondike Goldfields and adjacent areas, Yukon Territory
Dating Early and Middle (Reid) Pleistocene glaciations in central Yukon by tephrochronology

SAMPLE LOCATION

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Page modified: August 1, 2017 15:29
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