太行-五台山区不同时代花岗岩类岩石学和地球化学的特征对比及陆壳演化

通过对太行－五台山区太古宙、元古宙和中生代等不同时代的花岗岩类岩石学和地球化学特征的对比，并将晚太古时期花岗岩类同国内外同时期花岗岩类进行对比，确定了本区晚太古时期花岗岩类岩石组合为英云闪长岩－奥长花岗岩－花岗闪长岩或英云闪长岩－奥长花岗岩－花岗闪长岩－花岗岩，并以奥长花岗岩演化趋势为主，叠加了部分钙碱性演化；而元古宙、中生代花岗岩类岩石组合则主要为花岗闪长岩－花岗岩或花岗岩，以钙碱性演化趋势为特征。可以认为晚太古时期的太行－五台山区正处于陆壳演化的初始阶段和成熟阶段之间的过渡性阶段。

Comparison of Petrological and Geochemical Characteristics of Granitic Rocks with Different Ages and Continental Crustal Evolution, Taihang Wutai area

Based on comparison of petrological and geochemical characteristics of granitic rocks with different ages (Archean, Proterozoic and Mesozoic) and comparison of the late Archean granitic rocks with the same ages in the world, this paper identified that the late Archean granitic rock association in this area is composed of tonalite trondhjemite granodiorite,or tonolite trondhjemite granodiorite granite with major trondhjemite trend with partly calc alkaline trend; however, Proterozoic and Mesozoic granitic rock association in this area consists of granodiorite granite,or granite with calc alkaline trend. It is suggested that the Taihang Wutai area in the late Archean was developed in the transitional stage from the inmature to mature continental crust.