Sample: Preece_2000_Klondike_District_Sheep_Creek_Tephra
| Sample ID: |
Preece_2000_Klondike_District_Sheep_Creek_Tephra [1] [2] |
| Station ID: |
Klondike_District_Regional_Tephra |
| AT Num: |
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| Volcano: |
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| Possible source: |
Drum |
| Eruption: |
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| Collector: |
Preece, S. J. |
| Date sampled: |
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| Sample type 1: |
Tephra Fall |
| Color: |
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| Final unit: |
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| Text Description: |
Occurs within organic-rich, reworked loess in low-elevation area. The major-element glass composition reported here is the average of analyses of 9 samples: UT104, UT1058, UT1060, UT1064, UT1065, UT1459, UT1460, UT1461, UT1462. The trace-element glass composition reported is the average of analyses of 3 samples: UT104, UT1060, and UT1065. Type II beds have more crystals than type I beds, and the glass is mainly in the form of highly inflated pumice. Feldspar, orthopyroxene, and green amphibole are common with minor or trace amounts of red amphibole, clinopyroxene, iron-titanium oxides, apatite, and zircon. |
| Sample Location: |
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References Cited
Preece, S. J., Westgate, J. A., Alloway, B. V., and Milner, M. W., 2000, Characterization, identity, distribution, and source of late Cenozoic tephra beds in the Klondike District of the Yukon, Canada: Canadian Journal of Earth Sciences, v. 37, n. 7, p. 983-996.
Westgate, J.A., Preece, S.J., Froese, D.G., Walter, R.C., Sandhu, A.S., and Schweger, C.E., 2001, Dating Early and Middle (Reid) Pleistocene glaciations in central Yukon by tephrochronology: Quaternary Research, v. 56, n. 3, p. 335-348, doi: 10.1006/qres.2001. 2274 .