Sample: 01KW-CP1-G1-7a
| Sample ID: | 01KW-CP1-G1-7a [1] |
| Station ID: | 01KW-CP1-G1 |
| AT Num: | AT-207 |
| 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. 3c. Interpreted deposit type: tephra fall. Thickness: 41 cm (62 cm cumulative; unit broken into four subunits based on bedding characteristics). Grain size: coarse lapilli with coarse ash parting mid deposit. Bedding: normally graded. Sorting: poorly sorted. Juvenile clast type: dark brown (less dense, slightly more vesicular clasts). Remarks: juvenile scoria clasts from base. Munsell color-wet: 10Y 4/2. Munsell color-dry: 10YR 6/2. Grain shape: angular. 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and discrimination of Holocene tephra-fall deposits, Mount Spurr volcano, Alaska: Northern Arizona University unpublished M.S. thesis, 169 p.
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