Re: Volcanic cooling - Physics anyone?

Arthur V. Chadwick (
Sat, 01 Mar 1997 12:57:19 -0800

How big an issue is the origin of granite?

I just ran across a quotation in a well known Physical Geology textbook
(Leet & Judson) in which the authors state that plutonists believe 85% of
the granites are magmatic in origin and 15% are due to granitization. The
Granitists believe that 85% of the granites are metasomatic in origin, 15%
are magmatic. So take your choice! Certainly the prevalent paradigm today
is magmatic, but this leaves the "room problem" as a festering sore.