Sample: 94SJP106

Sample ID:	94SJP106 ^[1]
Station ID:	94SJP106
AT Num:
Volcano:	Skookum Creek
Possible source:
Eruption:
Collector:	Preece, S. J.
Date sampled:	1994-00-00
Sample type 1:	Lava
Color:
Final unit:
Text Description:	A 10-15’ thick flow with a vesicular, rubbly top. One of a sequence of flows forming the top of the plateau. Fine grained, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, plagioclase and clinopyroxene?. Plagioclase phenocrysts (An47 - An55) are up to 3.12 mm and occasionally display sieve textured zones, oscillatory zoning, and/or resorbed edges. Orthopyroxene phenocrysts are up to 8.33 mm. Opaque phenocrysts are up to 0.5 mm. Clinopyroxene phenocrysts are up to 1.05 mm.
Sample Location:

References Cited

[1] Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex, 1997

Preece, S. J., 1997, Geochemical variation in the less than 5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.

This website is supported by the U.S. Geological Survey under Cooperative Agreement Grant G22AC00137 and G23AC00070.

Mention of trade names or commercial products does not constitute their endorsement by the U.S. Geological Survey.