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Sample: 84-ARh-87

Sample ID: 84-ARh-87 [1]
Station ID: 84-ARh-87
AT Num:
Volcano: Sanford
Possible source:
Eruption:
Collector: Richter, D. H.
Date sampled: 1984-00-00
Sample type 1: Lava
Color:
Final unit:
Text Description: Mount Sanford lava flows (Pleistocene). Chiefly andesite flows from central shield of Sanford, shields (?) related to three subsidiary centers, and postulated Sanford caldera. Unit also includes domes, pyroclastic deposits, and a variety of shallow intrusive rocks that are exposed on south and southeast faces of Mount Sanford. Local accumulations of cinders, scoria, and bombs (stippled areas) indicate location of small parasitic vents. Lenses of light colored silicic air-fall tuff are also present.
Sample Location:

References Cited

[1] Geologic map of the Gulkana A-1 Quadrangle, south-central Alaska, 1994

Richter, D. H., Duffield, W. A., Sawyer, D. A., Schmoll, H. R., and Ratte, J. C., 1994, Geologic map of the Gulkana A-1 Quadrangle, south-central Alaska: U.S. Geological Survey Geological Quadrangle Map GQ 1728, unpaged, 1 sheet, scale 1:63,360.