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Three flow units at Hole-in-the-Wall. Glacier National Park, Montana. 1982.

Dates

Date Taken
1982

Summary

Glacier National Park, Montana. Three flow units at Hole-in-the-Wall. Hammer rests at the contact between the lower two flow units. Pipe vesicles are visible extending up from near the base of the middle flow unit. Note the concentration of subspherical cavities in the upper part of the lower flow unit (below hammer). The upper and lower boundaries of nearly all flow units are easily discernable on the basis of pipes near the base and concentrations of subspherical cavities near the top. 1982. Figure 29, U.S. Geological Survey Open-File Report 85-543.

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U.S. Geological Survey

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Type Scheme Key
name photoLibrary mrg00040
number photoLibrary 24505
batch photoLibrary batch41
number_in_book photoLibrary 40ct

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