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Sample: 94SJP13

Sample ID: 94SJP13 [1]
Station ID: 94SJP13
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: Vertical sheeted dike trending E-W cutting up through the brecciated unit (sBA9) at Site 12. Fine grained, holocrystalline, seriate porphyritic with a matrix of mesostasis, opaque, crystallites, plagioclase and clinopyroxene. Plagioclase phenocrysts (An28 - An60) are up to 1.9 mm and the larger grains may have oscillatory zoning or be slightly rounded; there are occasional sieve textured zones. Orthopyroxene phenocrysts are up to 1.2 mm and some have clinopyroxene rims; a few have resorbed edges.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.