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Sample: 01KW-CP1-G3-1a-A

Sample ID: 01KW-CP1-G3-1a-A [1]
Station ID: 01KW-CP1-G3
AT Num: AT-211-A
Volcano: Spurr
Possible source: Hayes
Eruption: Hayes Tephra Set H
Collector: Wallace, K. L.
Date sampled:
Sample type 1: Tephra Fall
Color:
Final unit:
Text Description: Stratigraphic Unit No. 9. Interpreted deposit type: tephra fall, locally reworked. Thickness: 63 cm. Grain size: coarse to fine ash. Bedding: massive; AT-227, AT-228 are mottled with pods of brown lapilli pumice (AT-228) possibly reworked. Sorting: AT-211 to AT-213, well-sorted; AT-227 to AT-228, moderately to poorly sorted. Juvenile clast type: white pumice (AT-211 to AT-213); white pumice (Hayes) and black glass scoria (re-worked Crater Peak) (AT-227, AT-228). Remarks: Hayes tephra-set base. Munsell color-wet: 5Y 7/2. Munsell color-dry: 5Y 8/1. Grain shape: angular-subround. 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and discrimination of Holocene tephra-fall deposits, Mount Spurr volcano, Alaska: Northern Arizona University unpublished M.S. thesis, 169 p.