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Sunday, February 5, 2012

E ~ Erratic


Erratics are large boulders that were transported on and in glaciers and left deposited by the melting retreat. Erratics were also floated during the Bretz Floods. It is possible to find boulders that originated in the region of Northern Montana left high and dry in the open fields of eastern Washington and the Willamette Valley of Oregon. Some of these boulders are massively large, almost house sized.

Visit Huge Floods to see and learn about the floods and the interesting landscape they left.


1 comment:

  1. I like your Nature Alphabet - perhaps you could design a letter incorporating each creature or object.