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Sample: 85CNS33

Sample ID: 85CNS33 [1] [2]
Station ID: 85CNS33
AT Num:
Volcano: Spurr
Possible source:
Eruption:
Collector: Nye, C. J.
Date sampled: 1985-01-01
Sample type 1: Lava
Color:
Final unit:
Text Description: Lava from ancestral Crater Peak Peak (proto-Crater Peak of Nye and Turner (1990)) from package of flows inset against ancestral Mt. Spurr lavas west of Crater Peak. Sample PCP-B01 of Nye and Turner (1990). Cliffy ancestral Crater Peak section. Lava w/ large (to 5mm) cpx megacrysts and smaller (~1mm) equant equigranular plagioclase. This sample contains more cpx (to 30%) than S27-29, 31, 32. Also contains hornblende, often as armor on cpx megacrysts. Analysis previously reported by Nye and others (1995, U.S. Geological Survey Bulletin 2139, p. 119-128.); data in this report has updated ICP/MS values.
Sample Location:

References Cited

[1] Petrology, geochemistry, and age of the Spurr volcanic complex, eastern Aleutian arc, 1990

Nye, C. J., and Turner, D. L., 1990, Petrology, geochemistry, and age of the Spurr volcanic complex, eastern Aleutian arc: Bulletin of Volcanology, v. 52, n. 3, p. 205-226.

[2] Geochemistry of some Quaternary lavas from the Aleutian Arc and Mt. Wrangell, 2018

Nye, C.J., Beget, J.E., Layer, P.W., Mangan, M.T., McConnell, V.S., McGimsey, R.G., Miller, T.P., Moore, R.B., and Stelling, P.L., 2018, Geochemistry of some quaternary lavas from the Aleutian Arc and Mt. Wrangell: Alaska Division of Geological & Geophysical Surveys Raw Data File 2018-1, 29 p. http://doi.org/10.14509/29843