Mount Rainier National Park, Washington. Bouldery till, exposed in a gully on
the north side of Glacier Basin, is part of the old drift. The boulders and
smaller stones of various colors in the till are derived from the bedrock that
underlies the volcano. The stones are contained in a very hard and compact
matrix of brownish-gray silt and sand. Figure 6, U.S. Geological Survey
Bulletin 1288.
Survey Bulletin-1288
Digital File:cdr00014
ID. Crandell, D.R. 14ct