jacen writes:
Both, actually. I fully realized that boulders do get moved around quite a bit by forces of nature. What I'm having trouble believing is a flood would actually move truck and building size boulders into nice and neat formations, sometimes one on top of another.
Well, you're right of course, but then we still don't know what size boulders we're considering here since Christian hasn't offered up that information yet.
I did state, though, that most likely any boulders as large as you're suggesting are the result of in situ weathering of bedrock. As Dblevins noted, weathering and spalling off along joints will cause some rock types to become roundish boulders. That's what is happening in coragyps' link. (I see in you agreed with this already.)
A flood the size of Noah's might actually have enough force to move enormous boulders around (not sure building-sized boulders, though, probably depends on how big you're talking). However, material deposited by a mega-flood is going to display certain diagnostic characteristics, such as cross-beds, laminae, graded bedding, channeling, etc., likely forming at massive scales. Additionally, the material itself will be heterolithic, meaning the deposit will be comprised of a large variety of rock types derived from a huge source area. Boulders derived in situ are likely to be composed of one rock type; or at least a few very similar/related rock types.
We're not talking about glaciers or hundred years floods. We're talkign about a flood that supposedly took place 40 days and 40 nights.
As I stated above, depending on the actual size of boulders, a mega-flood may be able to move and deposit enormous boulders. I was simply pointing out that it's not impossible to get sedimentologically deposited boulders on tops of mountains as opposed to ones created in situ.
Good luck.
We might get lucky.
This message has been edited by roxrkool, 10-18-2005 12:30 AM