[at-l] Frances and Home Destruction

[jbryankramer at msn.com (J Bryan Kramer)]

It was back in the Miocene, from McPhee's Annuals of a Former World:

"We know the approximate volume of sediment from the Powder River Basin, the
Bighorn River Basin, the Wind River Basin.... We can say it all went
downhill to Mississippi Delta." You can drill down 15000 feet many miles off
shore and still be in that sediment. 

It was called the Laramide Orogeny and the Exumation of the Rockies. Since
the mountains were being eroded as they were pushed up they may never have
been 60,000 feet high but that was the total amount pushed up.

If you can find McPhee's book you probably would enjoy it, he wrote a series
of books looking at the Geology cross country by following I-80 from NJ to
CA. Rising From the Plains is the Wyoming volume, all bundled together
they're called Annuals of a Former World. In Suspect Terrain covers
NJ/NY/PA. Very readable. Wyoming has had a lot of violent geology happen
there, it's one of the oldest parts of North America.

Bryan

-------Original Message-----
--From: Ken Powers [mailto:kdpo@gottawalk.com] 
--Sent: Friday, September 03, 2004 22:18
--To: Leslie Booher; J Bryan Kramer; 'Shane'; at-l@backcountry.net
--Subject: Re: [at-l] Frances and Home Destruction
--
--
--Nope, most of Wyoming is on the Eastern side of the divide. 
--Same is true of Montana.  And the Missouri River headwaters 
--are in southern Montana. Lewis & Clark thought Sacagwea 
--Springs, a few feet from the Idaho border, was the beginning 
--of the Missouri River. Now the spring feeds the Big Hole 
--River, one of the Missouri tributaries.
--
--I have trouble believing that Wyoming was 60,000 feet high. 
--Gannet Peak is now the high point at 13,804.
--
--Ken
--
------- Original Message ----- 
--From: "Leslie Booher" <lbooher@pure.net>
--To: "J Bryan Kramer" <jbryankramer@msn.com>; "'Shane'" 
--<shane@theplacewithnoname.com>; <at-l@backcountry.net>
--Sent: Friday, September 03, 2004 7:08 PM
--Subject: Re: [at-l] Frances and Home Destruction
--
--
--But isn't Wyoming on the other side of the Continental 
--Divide?  The Mississippi River starts in Lake Itasca, 
--Minnesota.  How would the soil get from Wyoming to Minnesota? 
-- Through the Missouri River?  I've read that the bulk of the 
--water in the Mississippi River comes from the Ohio, anyway, 
--and that it should be called the Ohio from Cairo, Illinois, 
--to New Orleans. Nonetheless, we were happy to receive it in 
--Greenville, Mississippi. anklebear
----------------------------------------------------------------
----------------
------
--
--
--Actually the delta is Wyoming washed down the river. The 
--mountains in Wyoming were at one point 60,000 feet high, they 
--eroded down and the remains are the delta plus a good bit of 
--Mississippi surrounding states.
--
--Bryan
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