Vashon glacier begins to melt and recede from Puget Sound region and Columbia Basin around 16,900 years ago (historylink.org)

author

Jennifer Ott

description

An excellent writeup of the Vashon Glaciation by Jennifer Ott.

essay number

5087

history of

license

CC BY-NC-ND 4.0

random

I made one great mistake in my life—when I signed the letter to President Roosevelt recommending that atom bombs be made; but there was some justification—the danger that the Germans would make them. Recorded by Linus Pauling, “Note to Self regarding a meeting with Albert Einstein. November 16, 1954

retrieved

2024-10-19

snippets

On the west side of the Cascade Mountains, two lobes covered the Puget Lowlands. Along the north side of the Olympic Mountains the Juan de Fuca Lobe moved west, and between the Olympics and the Cascades the Puget Lobe moved south.
As the Puget Lobe advanced, it deposited hundreds of feet of Lawton Clay, Esperance Sand, and Vashon Till. Meltwater flowing below the ice carved out troughs that we know as valleys.

tags

HistoryLink.org

website

https://www.historylink.org/File/5087