Sample: Preece_1999_Gold_Hill_Loess_SP_average
| Sample ID: |
Preece_1999_Gold_Hill_Loess_SP_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: |
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| Final unit: |
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| Text Description: |
Type II beds are white, commonly with a Type II beds are white, commonly with a salt and pepper appearance due to the abundance of dark-colored minerals. Contain more than 20% phenocrysts and have colorless, highly inflated pumice.Other glass shard morphologies are rare, and no brown glass shards have been observed. Major minerals are feldspar, orthopyroxene, and green amphibole with minor or trace amounts of red amphibole, iron-titanium oxides (which commonly show fine-scale exsolution features), apatite, and zircon. The composition reported here is the average of two samples: UT790, UT889 |
| 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.