Pentti Eskola was one of the first Finnish geologists who applied physicochemical
ideas to the study of metamorphism. He laid down
the foundations for later studies in metamorphic petrology.
Eskola was born in Lellainen and became a chemist at the University
of Helsinki before specializing in petrology. In the early
1920s he worked in Norway and in Washington, D.C., in the
United States. He then taught at Helsinki from 1924 to 1953.
Throughout his life Eskola was interested in the study of metamorphic
rocks, taking early interest in the Precambrian rocks
of England. Relying heavily on Scandinavian studies, he wanted
to define the changing pressure and temperature conditions
under which metamorphic rocks were formed. His approach
allowed for the comparison of rocks of widely differing compositions
in respect of the pressure and temperature under
which they had originated.














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