Member (Idle past 244 days)
From: Manchester, UK
Message 41 of 372 (411222)
07-19-2007 2:37 PM
Reply to: Message 34 by Repzion
07-19-2007 1:29 PM
A simplified model of geology
|Anyways, explain uplift. I'd love to hear how fossils end up on mountians.|
Not just on mountains - mostly in the mountains. Take a flexible plastic sheet and put it into a puddle near a curb. Move the plastic sheet towards the curb, when it hits the curb the plastic will begin to fold and crease and will uplift so that some of it is no longer in the puddle. The plastic will nevertheless covered in a crust of dirt.
Now, replace the dirty puddle with the Tethys sea, replace the plastic sheet with India and the curb with Asia. Here the land ripples and creases as India pushes against Asia. The crust of dirt is about 1500ft of dead animal parts, cemented together to form sedimentary rock. If the flooding was about one year long it would not be 1500ft deep.
The important difference between the analogy and reality is that the Indian subcontinent is pushing itself so hard it is going underneath the 'curb' that is Asia.
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