Sample: 01KW-CP1-G3-2-B
| Sample ID: | 01KW-CP1-G3-2-B [1] |
| Station ID: | 01KW-CP1-G3 |
| AT Num: | AT-223-B |
| 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. 5. Interpreted deposit type: co-pyroclastic flow tephra fall. Thickness: 75 cm. Grain size: medium to fine ash; randomly distributed 1-2 mm to 1 cm pumice lapilli. Bedding: massive. Sorting: well to moderately sorted. Juvenile clast type: tan (pumice-like clasts, yet still poorly vesiculated). Remarks: coarsest (1 cm) pumice lapilli. Munsell color-wet: 10YR 4/2. Munsell color-dry: 10YR 2/2. Grain shape: pumice lapilli-subround to round. 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and discrimination of Holocene tephra-fall deposits, Mount Spurr volcano, Alaska: Northern Arizona University unpublished M.S. thesis, 169 p.
full-text pdf 256mb