Sample: Preece_2000_Klondike_District_Bonanza_Creek_Tephra
| Sample ID: |
Preece_2000_Klondike_District_Bonanza_Creek_Tephra [1] |
| Station ID: |
Klondike_District_Regional_Tephra |
| AT Num: |
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| Volcano: |
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| Possible source: |
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| 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: |
Discontinuous and contorted pods in silty clay within gravels on Archibald's Bench, an intermediate terrace at 37-42 m above Bonanza Creek. The composition reported here is the average of three samples: UT1055, UT1454, UT1457. 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.