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RidgeRunner
01-08-2007, 06:00PM
Since I often incorporate history and wheeling together my goal is to look for places to go that will satisfy my insatiable lust for “What happened here”.

A number of years ago I read a book about Dr. Harlen Bretz, a geologist who discovered the reason for the geological events, better known as the Missoula Floods, that occurred in the Northwest 12,000 + years ago.

The name of the book is Cataclisms on the Columbia byJohn Eliot Allen and MarjorieBurns.

In a nutshell, huge, multiple floods occurred, after ice dams broke, and flowed across Northern Idaho and Western Washington , down the Columbia Basin and on to the Pacific Ocean. Where I live here in the Portland area, the water was about 400 ft. deep. It resulted in what’s now known as the Scablands of Western Washington (http://vulcan.wr.usgs.gov/Volcanoes/ColumbiaPlateau/summary_columbia_plateau.html). It left a lot of evidence that can be seen when you know what to look for.

The National Park Service is in the process of implementing interpretive centers and driving routes so people can learn and see what happened. Some of it certainly takes some imagination, particularly for those of us who don’t have much geological training.

I’ve made countless trips, driving across and flying over the area for more than 30 years and didn’t really know what I was looking at until I read the book and saw the Mystery of the Megaflood: Nova (http://www.netflix.com/MovieDisplay?&movieid=70041657&trkid=1767) which is available on Netflix. You can also Google (Missoula Floods), (Ancient Floods), etc and get a flood of information.

I'd like to plan a trip in May of 2007 with the intent to see some of this area firsthand instead of just driving through on the way to somewhere else. I don’t see it as a mainly highway trip from one interpretive center to the next. With a little research, we can take some off-highway excursions that will reveal evidence that the general public will probably miss and exercise our suspension systems at the same time.

Anyway, I’ll throw this out as conversation for now and if any of the Northwest members, Alanh, HenryJ, flywgn or anyone else is interested, I’ll pick a date and post this as a real trip. If no interest, it will be another expedition of one.:wink:

Mick

WhiteThaiGer
01-08-2007, 08:48PM
I remember that Nova episode. Absolutely fascinating stuff! Those big out-of-pace boulders the floods deposited everywhere stuck in my mind particularly.

alanh
01-08-2007, 09:10PM
Mick,

I've never made any real attempt to look for the path of the floods or more subtle things, but have been to the dry falls which is one of the more obvious features. That would have been something to see from a safe spot.

Keep us informed. I don't know exactly what will be going on in May yet as far as work goes that might interfere. I do have a meeting of the tool collector's club I belong to on the 19th of May. Since I do the secretary duties for meetings in Seattle, I try to work around those days.

Alan

RidgeRunner
01-09-2007, 10:25AM
I remember that Nova episode. Absolutely fascinating stuff! Those big out-of-pace boulders the floods deposited everywhere stuck in my mind particularly.


WT, thanks for your comments. I’ve seen the NOVA program twice and it was even more amazing the second time. Some of those boulders you mentioned are as big as cars…Called eratics, they were carried from British Columbia by the ice and then floated down with the floodwaters encased in ice. I visited a site with an eratic the size of a small car near McMinnville, OR in the Willamette Valley, many hundreds of miles from Missoula.


Mick,

I've never made any real attempt to look for the path of the floods or more subtle things, but have been to the dry falls which is one of the more obvious features. That would have been something to see from a safe spot.

Keep us informed. I don't know exactly what will be going on in May yet as far as work goes that might interfere. I do have a meeting of the tool collector's club I belong to on the 19th of May. Since I do the secretary duties for meetings in Seattle, I try to work around those days.

Alan


Alan, thanks for responding...you’re right, Dry Falls (http://www.gonorthwest.com/Washington/northeast/Dry_Falls.htm) must have been spectacular with that much water going over it. It’s hard to imagine the force of that much water but it sure changed the landscape. Here’s (http://www.kidscosmos.org/kid-stuff/mars-trip-9.html) another good link with pix.

I have some obligations from about the middle of May on so some part of the first two weeks of May would work for me as a place to start thinking of a timeframe.

Mick