Sample: 01KW-CP1-G3-3
| Sample ID: | 01KW-CP1-G3-3 [1] |
| Station ID: | 01KW-CP1-G3 |
| AT Num: | AT-224 |
| Volcano: | Spurr |
| Possible source: | Crater Peak |
| Eruption: | |
| Collector: | Wallace, K. L. |
| Date sampled: | |
| Sample type 1: | Tephra Fall |
| Color: | |
| Final unit: | |
| Text Description: | Stratigraphic Unit No. 6. Interpreted deposit type: pyroclastic flow or lahar. Thickness: 125 cm. Grain size: coarse lapilli: upper deposit - 3.5 cm max; lower deposit - 9.5 cm max. Bedding: normally graded. Sorting: poorly sorted. Juvenile clast type: brown (less dense, slightly more vesicular clasts) and tan (pumice-like clasts, yet still poorly vesiculated). Remarks: juvenile clasts nearly absent; sampled frothy brown bombs 'floating' near top of section. Munsell color-wet: 10YR 6/2 (altered); 10YR 2/2 (fresh). Munsell color-dry: 10YR 7/2. Grain shape: all. Age: 840+/-60 yr. B.P. >1953. |
| Sample Location: |
References Cited
[1] Characterization and discrimination of Holocene tephra-fall deposits, Mount Spurr volcano, Alaska, 2003
Wallace, K. L., 2003, Characterization and discrimination of Holocene tephra-fall deposits, Mount Spurr volcano, Alaska: Northern Arizona University unpublished M.S. thesis, 169 p.
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