continues to confound earth scientists. Dozens of theories have been proposed to explain these enigmatic features that dimple the prairies of Washington state.
I personally enjoy the ongoing controversy surrounding these mysterious landforms. It is an excellent demonstration of the principle of multiple working hypotheses for beginning geology students.
Saturday, April 4, 2009
Subscribe to:
Post Comments (Atom)
Wow! I've never heard of or seen Mima Mounds before. What a geomorphological oddity! For pocket gophers to form these features, they'd have to be pretty industrious over a very long time frame!
ReplyDeleteThe best treatise on these odd features:
ReplyDeleteWashburn, A. L., 1988, Mima mounds--An evaluation of proposed origins with special reference to the Puget Lowland: Washington Division of Geology and Earth Resources Report of Investigations 29, 53 p. (not available on-line)
Me? I favor a periglacial explanation.