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*Study focuses on South Caledonides in western Norway. Nice photo (looks like elongated snowflakes against a dark backdrop) too.
Mtn formation previously mainly thought to be a slow, grinding process with lots of heat involved. New discovery suggests the process is actually quicker and cooler.
The SC in Norway formed after a continental collision aprox 425 million years ago. The orogenic cycle suggests the time lapse between burial and resurfacing was only 13 million years...not the originally estimated 40 million yeras.
Again, heat doesn't seem to be a major factor. Sometimes heating lasted only 10 years.
Mentions radiogenic isotope dating, argon-40 and argon-39.
--Cindy
We all know [i]those[/i] Venusians: Doing their hair in shock waves, smoking electrical coronas, wearing Van Allen belts and resting their tiny elbows on a Geiger counter...
--John Sladek (The New Apocrypha)
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