Sample: 93SJP66

Sample ID:	93SJP66 ^[1]
Station ID:	93SJP66
AT Num:
Volcano:	Skookum Creek
Possible source:
Eruption:
Collector:	Preece, S. J.
Date sampled:	1993-00-00
Sample type 1:	Lava
Color:
Final unit:
Text Description:	At least 3’ thick dike, trending N45°W, that is at the base of the Dome F at Site 4 and then cuts up through the unit nA1. Fine-grained, holocrystalline, weakly pilotaxitic, seriate to glomeroporphyritic, with a matrix of yellow-green alteration, opaque, feldspar and calcite. Plagioclase phenocrysts (An31 - An45) are up to 1.95 mm and some have complex zoning, resorbed rims, sieve textured zones, and clinopyroxene inclusions. Clinopyroxene phenocrysts are up to 0.9 mm and are mostly altered. Opaque phenocrysts are up to 0.35 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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.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.