The
last (Vashon) glaciation of the Puget Lowland
Inputs:
global sea level
ice advance and
retreat
isostatic
depression and rebound
initial
topography (a fiction!)
Ice advance and
retreat were rapid.
Seattle was covered by ice for less than 2,000 years. At glacial
maximum
about 1 km (3,000 ft) of ice covered Seattle.