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Sample: 74ARh301

Sample ID: 74ARh301 [1]
Station ID: 74ARh301
AT Num:
Volcano: Drum
Possible source:
Eruption:
Collector: Richter, D. H.
Date sampled: 1974-00-00
Sample type 1: Other
Color:
Final unit:
Text Description: Undifferentiated intrusive dacite and associated breccias - intrusive bodies consist of light- to medium-gray porphyritic dacite containing phenocrysts of brown and green hornblende with strongly oxidized rims, saussuritized plagioclase, and, locally, resorbed hypersthene in a spherulitic to felty matrix. Associated breccias are massive, brownish-gray, reddish-brown, and mauve rocks containing rounded to angular clasts of porphyritic dacite, similar to that of intrusive bodies, and andesite in an altered dark turbid matrix.
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5 Ma Wrangell Volcanic Field, Alaska, with an emphasis on the Skookum Creek volcanic complex: Miami University (Ohio) unpublished Ph.D. dissertation, 547 p.