Geology/Geomorphology

Lincoln Park is a great park and with its great views of the Puget Sound and Vashon Island. But how did Lincoln Park and Vashon Island became what they are today?

There has been at least 4 glaciations in the last 2 million years, and the Cordilleran Ice Sheet occurred only about 18000- 12000 years ago, which affected much of the Puget Sound area. Modern Vashon Island, Bainbridge Island, and Lincoln Park lie in the Puget Trough area, where the Vashon Ice Sheet has covered much of Washington State about 14,000 years ago. Part of the Ice sheet that covered the Puget Trough area was called the Puget Lobe that was about 3000 feet thick. When the Ice sheet retreated, a lake was left and deposited sediment that can be found at Bainbridge Island and Discovery Park, which lays along the Puget Sound. Vashon Island can be assumed that it was carved out by the Vashon Ice Sheet and other Islands alike in the Puget Sound region. When you look across the water at this station and see Vashon Island it is hard to picture all of this region was once covered with an Ice Sheet about 3000 feet, that created/ shaped the land that we live and see everyday in front of us.

View of Vashon Island.

(A) Lincoln Park's Location relative to Vashon Island and Brainbridge Island.
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