The Transformations of Rock-Masses 1

Abstract

THE study of the changes which rock-masses undergo under natural conditions is in itself by no means an inconsiderable branch of geology, and its pervading importance throughout the whole field of the science brings it continually to the front in stratigraphical as well as petrological research. The literature of the subject is a large one, but until now no serious attempt has been made to deal fully and comprehensively with the principles and phenomena of metamorphism as a whole. Prof. van Hise's wide experience in the Lake Superior region and elsewhere has made him well fitted for a task to which he has devoted seven years of labour; and the outcome of that labour, as represented in the massive volume before us, will have a permanent value for all who come after him in this field.

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