Precambrian granitic rocks,continental crustal evolution and craton formation of the North China Platform.
华北地台前寒武花岗岩类、陆壳演化与克拉通形成

Based on study of Precambrian granitic rocks, this paper suggests that T 1T 2, T 1T 2G 1G 2 and G 1G 2 associations represent inmature,semi mature and mature continental crustal composition, respectively. Continental root and its nature are discussed. Ten Archean continental nucleuses have been recognized. Formation of Mezoarchean initial continental nucleus, Archean continental nucleus in Neoarchean, two micro continental scale continental nucleus in the latest Archean, and formation of the North China craton by tectonic assemblage of the two mature continental nucleuses in Paleoproterozoic are disussed.