Hi All,
As an undergrad, I was taught that the simplest method for naming
metamorphic rocks was to use the main (or imortant) minerals along
with the dominant texture (schist, gneiss, hornfels...). Eg. a
clinopyroxene and amphibole bearing rock that has a hornfels texture
would be a cpx-amph hornfels (as originally refered to by Anthi). This
sort of classification, to me at least, conveys the most information about
the rock. By adding garnet to a pyroxene amphibolite you may get a
granulite, but the term 'granulite' is so commoly used to cover any rock
that formed/recrystallised in the granulite facies, that it really conveys
little information apart from just that. Just a thought, anyway ...
Cheers,
Nigel.
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Nigel Kelly
Department of Geology & Geophysics
University of Edinburgh
Kings Buildings, West Mains Rd
Edinburgh, EH9 3JW
Scotland Email: [log in to unmask]
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