Bill DeWitt  wrote:
> 
[...]
> 
>     Some mountains look sharp because they have been recently pushed up.
> Even old mountains look that way if they are still being pushed up. But old
> mountains in areas with no recent plate activity are rounded by erosion.
> Your photo is clearly one of an upthrust formation of some sort. In a
> billion years it will be a rounded boulder.
> 

Agreed, but on the other hand, the sharp structures often correspond with the
river network, which suggests, that they are also partly formed by erosion.  

The photo is not a very good example, very good are usually satellite pictures
where you can see the sharp edges in the light *and* the rivers.  

just found one (sorry for the many pictures), well in fact it's a radar image,
but it should work...

Christoph

--
Christoph Hormann <chr### [at] gmxde>
Homepage: http://www.schunter.etc.tu-bs.de/~chris/

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