Sample: 01KW-CP4-8
| Sample ID: | 01KW-CP4-8 [1] |
| Station ID: | 01KW-CP4 |
| AT Num: | AT-247 |
| 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. 7. Interpreted deposit type: tephra fall (possibly reworked) and paleosol complex. Thickness: 12 cm. Grain size: medium lapilli (5-8 mm) to coarse ash. Bedding: massive lapilli base (3.5 cm) grading upward into coarse ash soil with pockets of normally graded mafic fine lapilli scoria. Sorting: base-well sorted; pockets of mafic scoria-well sorted. Juvenile clast type: black (dense, scoria-like clasts). Remarks: mafic scoria from random pockets. Munsell color-wet: 5 YR 2/2. Munsell color-dry: 5 YR 5/2. Grain shape: angular. Age: >3650+/-150 yr. B.P. |
| 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and discrimination of Holocene tephra-fall deposits, Mount Spurr volcano, Alaska: Northern Arizona University unpublished M.S. thesis, 169 p.
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