Old drift on the north side of Glacier Basin. Mount Rainier National Park, Washington. No date.

Mount Rainier National Park, Washington. Old drift on the north side of Glacier Basin. The geologic formations, in order of decreasing age, are: 1, bedrock much older than Mount Rainier; 2, mudflows which came from an old Mount Rainier volcano; 3, old drift which consists mostly of very bouldery till; 4, an old andesite lava flow from Mount Rainier; 5, red volcanic rubble from Mount Rainier; 6, a younger andesite lava flow from Mount Rainier; and 7, an andesite dike. The age relation of the dike to the younger lava flow is not known. The yellow deposit in the right foreground is a Garda moraine of Inter Glacier; it is about 200 feet high and consists almost wholly of Osceola Mudflow which was eroded from the floor of the basin and [...]