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Sample: 01KW-CP1-G1-6a

Sample ID: 01KW-CP1-G1-6a [1]
Station ID: 01KW-CP1-G1
AT Num: AT-205
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. 3d. Interpreted deposit type: tephra fall. Thickness: 11 cm (62 cm cumulative; unit broken into four subunits based on bedding characteristics). Grain size: fine lapilli to coarse ash. Bedding: alternating lapilli and coarse ash. Sorting: poorly sorted. Juvenile clast type: tan (rare-pumice-like clasts, yet still poorly vesiculated) and black (dense, scoria-like clasts). Remarks: fine juvenile lapillus sample from base of unit 3d. Munsell color-wet: 10YR 2/2. Munsell color-dry: 10YR 5.5/3. Grain shape: angular. Age: 840+/-60 yr. B.P. >1953.
Sample Location:
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Legend
✕
Red (Warning)
Orange (Watch)
Yellow (Advisory)
Green (Normal)
Uninstrumented

50 km
30 mi
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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and discrimination of Holocene tephra-fall deposits, Mount Spurr volcano, Alaska: Northern Arizona University unpublished M.S. thesis, 169 p.