The amalgamation of the supercontinent of North China Craton at the end ofNeo-Archaean and its breakup during late Palaeoproterozoic and Meso-Proterozoic

The most important geological events in the formation and evolution of the North China Craton concentrate at two stages: 2 600-2400 Ma and 2000-1700 M a (briefly, we call them 2.5 Ga event and 1.8 Ga event respectively in this paper). We propose that the essences of these two events are: Several Arch aean micro-continents amalgamated to form one supercontinent according to t he plate tectonic principle with a small scale at about 2.5 Ga, and the sup ercontinent broke down by upwelling of an ancient mantle plume at about 1.8