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Sample: DT_75-212

Sample ID: DT_75-212 [1]
Station ID: DT_75-212
AT Num:
Volcano:
Possible source:
Eruption:
Collector: Unknown, Unknown
Date sampled:
Sample type 1: Tephra Fall
Color:
Final unit:
Text Description: Scattered grains in a coal matrix; finer grained than other samples. A majority of grains are altered and indeterminate; about 25% unzoned plagioclase and 15% pumice. Rare glass shards and biotite, X-ray diffractogram indicates some quartz.
Sample Location:

References Cited

[1] Radiometric dating of ash partings in Alaskan coal beds and upper Tertiary paleobotanical stages, 1980

Turner, D.L., Triplehorn, D.M., Naeser, C.W., and Wolfe, J.A., 1980, Radiometric dating of ash partings in Alaskan coal beds and upper Tertiary paleobotanical stages: Geology, v. 8, n. 2, p. 92-96.