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Sample: 81ARJ075A

Sample ID: 81ARJ075A [1] [2]
Station ID: 81ARJ075
AT Num:
Volcano: Edgecumbe
Possible source: Edgecumbe Edgecumbe
Eruption: Edgecumbe Tephra set (includes Mount Edgecumbe Dacite (MEd) Tephra)
Collector: Riehle, J. R.
Date sampled: 1981-08-26
Sample type 1: Tephra Fall
Color:
Final unit:
Text Description: 1/2 m variable yell, red, bn "diamiction"- looking yellow pumice in soft fines matrix. | 2m internally bedded yell-pumice unit. Red "sponge" at bottom. Near center, 1/2m resembles salt-and-pepper. Fines to sand beds at top. Beds 10-50cm thick, very regular. | 4-5cm fine grey ash (75%gl) ; Samp B (69%gl) | 4-5m exposed of pumice-block ash deposit. Slightly coherent, no fines. Largest clasts ~30cm. Possibly top 1m slightly finer than rest- Samp A.
Sample Location:

References Cited

[1] Pyroclastic deposits of the Mount Edgecumbe volcanic field, Southeast Alaska: eruptions of a stratified magma chamber, 1992

Riehle, J. R., Champion, D. E., Brew, D. A., and Lanphere, M. A., 1992, Pyroclastic deposits of the Mount Edgecumbe volcanic field, Southeast Alaska: eruptions of a stratified magma chamber: Journal of Volcanology and Geothermal Research, v. 53, n. 1, p. 117-144.

[2] The Mount Edgecumbe tephra deposits: a marker horizon in southeastern Alaska near the Pleistocene-Holocene boundary, 1992

Riehle, J. R., Mann, D. H., Peteet, D. M., Engstrom, D. R., Brew, D. A., and Meyer, C. E., 1992, The Mount Edgecumbe tephra deposits: a marker horizon in southeastern Alaska near the Pleistocene-Holocene boundary: Quaternary Research, v. 37, n. 2, p. 183-202.