Sample: Preece_1999_Gold_Hill_Loess_PA_average
| Sample ID: |
Preece_1999_Gold_Hill_Loess_PA_average [1] |
| Station ID: |
Gold Hill Loess 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: |
pink |
| Final unit: |
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| Text Description: |
Semi-lithified condition; cemented aggregates of very small glass shards and phenocyrsts. Type I beds have a cream, pink, or gray color; they contain less than 20% phenocrysts and have bubblewall shards, pumice with large vesicles, glass spheres, and, typically, small amounts of dark brown glass shards. Major minerals are feldspar, orthopyroxene, and clinopyroxene with minor or trace amounts of green and red amphibole, titanomagnetite, ilmenite, apatite, zircon, and biotite. The composition reported here is the average of two samples: UA355 and UT497 |
| Sample Location: |
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References Cited
Preece, S. J., Westgate, J. A., Stemper, B. A., and Pewe, T. L., 1999, Tephrochronology of late Cenozoic loess at Fairbanks, central Alaska: Geological Society of America Bulletin, v. 111, n. 1, p. 71-90.