Grand Canyon

Sender · Post by **Sender** » Thu Aug 18, 2005 11:56 pm

Ok, this is my first topic starter. You have probably beat this to death, if so, maybe the other newbies would like to join in. Thoughts?

jwu · Post by **jwu** » Fri Aug 19, 2005 7:52 am

Welcome to the forum!

As it seems it was carved by the Colorado river, while the area was being pushed upwards by geological processes.

Sender · Post by **Sender** » Fri Aug 19, 2005 11:46 am

jwu wrote:Welcome to the forum!

As it seems it was carved by the Colorado river, while the area was being pushed upwards by geological processes.

Thanks for the welcome. What about the low grade extreme? (looping)

btw: Is there a way tp reply in a post without quoting someone? If so, how?

jwu · Post by **jwu** » Fri Aug 19, 2005 11:53 am

What about the low grade extreme? (looping)

What about it? Meandering is well explained, as far as i know. Perhaps i misunderstood you (English isn't my first language).

btw: Is there a way tp reply in a post without quoting someone? If so, how?

You can delete the quoted text, or just use the small "post reply" button at the left side below the last post.

Chimp · Post by **Chimp** » Fri Aug 19, 2005 5:28 pm

It drove north from Flagstaff, until it ran out of gas? j/k

Is there a religion component to this or is it just a geology primer?

phoenixfire · Post by **phoenixfire** » Sat Aug 20, 2005 1:42 am

I think that after the flood there were a lot of huge inland lakes for awhile. There was still a lot of continental drift, volcanism, earthquakes, etc. At some point there was a huge mudslide or flood that went out to sea and formed the grand canyon.

I believe the same process happened after Mount St. Helens erupted. Mudflows carved out a canyon and then a creek started running through it.

jwu · Post by **jwu** » Sat Aug 20, 2005 7:36 am

That however cannot explain the looping. Meandering takes time.

The canyon at Mount St Helens isn't comparable at all. It's way smaller, and was carved through soft material, while the grand canyon was carved through hard rock, as seen by the vertical walls that it has in many places. The Mt St Helens canyon doesn't really meander either.

Jose · Post by **Jose** » Mon Aug 22, 2005 7:09 pm

A while back, I posted a bit of a discussion on this topic in the old Grand Canyon thread. Why don't you browse through it, and see what you think.

There's also an interesting puzzle about the dinosaur (and other) footprints in the canyon. It would be good to keep these in mind when thinking up an explanation for the canyon.

Sender · Post by **Sender** » Mon Aug 22, 2005 8:48 pm

[quote="Jose"]A while back, I posted a bit of a discussion on this topic in the old Grand Canyon thread. Why don't you browse through it, and see what you think.

There's also an interesting puzzle about the dinosaur (and other) footprints in the canyon. It would be good to keep these in mind when thinking up an explanation for the canyon.[/quo

I will go look if there isn't a ton of posts. The footprints were made when the ground was flat. When the earth rose and the water rushed in, those footprints looks like dinosauers walked up the wall, but was actually made again while that ground was flat.

Sender · Post by **Sender** » Mon Aug 22, 2005 8:57 pm

jwu wrote:That however cannot explain the looping. Meandering takes time.

The canyon at Mount St Helens isn't comparable at all. It's way smaller, and was carved through soft material, while the grand canyon was carved through hard rock, as seen by the vertical walls that it has in many places. The Mt St Helens canyon doesn't really meander either.

The ground was flat and there was looping called the low grade extreme. There are also high walls and evidence of fast moving water. Grand Canyon has both. The rocks were mud at the time of the flood. Mt St Helens is a good example. It may be smaller, but the results are the same. Key word is catastrophes. You have to think on a grand scale. St Helen was equivalent to 20,000 atom bombs going off. Considered a medium size volcano. A world wide flood having 200 foot waves coming at you, in harmony with secondary waves, with no continents to stop it, could very easily form Grand Canyon in a matter of hours. You have to think large scale.