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andagda
2005-07-04 08:39:11
Geo differences between Mournes and WM
Hello all,

Can someone tell me why, although the Mournes and the Wicklow Mountinas are both granite intrusions, they look so different? Does it all come down to the fact the WM are much older?

- When it comes to erosion, the granite seems to split along rectangular fault lines in the Mournes. In Wicklow the hills are much more rounded. Why the difference?

- There are many core-stones all around the Mournes, including in numerous walls in the surrounding fields, but I don't think there are this many in Wicklow. Have all the Wicklow ones been eroded completely away because Wicklow is a much older range?

- Some of the tops of the Mournes are very dramatic, are these tops made of country stone or are they also granite? If they are granite, why don't they occur in Wicklow? The tops of the hills in Wicklow seem to be round except where the country stone cap still exists.

Thanks in advance, and any pointers to further information on the geology of these ranges would be much appreciated...
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