Figure 2. Photo of the palimpsest landscape elements of a glaciated valley, near Mount Rainier, Washington State, USA. Landscape elements (and their ages) are: A: pre-Quaternary river valleys cut into Oligocene volcanic bedrock (34–23 Myr), B: glaciated valley walls incised during the late Wisconsinan glaciation (25–13 kyr), C: vegetated mid-channel gravel bar (few decades old); D: present day braided river channel (contemporary). (Source: photo by Jasper Knight.)
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