Crustal history and the pre-cambrian time scale

Abstract

Many bodies of data are examined in this monograph; the complexity of this data is evident, and the difficulties of resolving events is very great. The crustal history of the earth is complex, and our understanding of the mechanisms of both tectonism of the emplacement and mobilization of rocks is poor. Nevertheless, since the ultimate goal of the science is an understanding of crustal history, it is important to speculate and consider various ideas that treat of these processes.

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