摘要
青岛崂山花岗岩具有成分和结构演化的特点。本文依据同源岩浆演化理论，应用岩石谱系单位划分方法，将组成该复式岩基的３６个侵入体划分为１０个单元，分别归并为浮山、石门山和崂项三个超单元，同属崂山超单元组合。通过对其地质学、岩石学、岩石化学、地球化学及同位素地质年代学等特征的研究，认为它们具有相同的起源，是在同一构造事件影响下，下地壳变质火成岩有间断地发生了三次熔融事件的产物。早期为Ｉ型花岗岩，晚期演化为Ａ型花岗岩。
Laoshan granites in Qingdao are featured by compositional and structiural evolution,Based on the theory of comagatic evolution and on the lithodemic division,the authors have divided the Laoshan granites into 1 0 unites which are then grouped into the Fushan,Shimenshan and Laoding superunites.Study of the geology petrology,petrochenisty,geochemistry and isotopic geoch r on ology,a has sh own that these granites have the sam e or igin,The Metamor phiosed magmatic rocks at the base of the earth's crust in this region have undergone in termittently three melting events under the influence of tectonic events forming the Laoshan superunits association.The Laoshan granite belongs to the I-type granite formed in the early period ,and the A-type granite has been evolved in the late period.
出处
《山东地质》
1994年第2期1-12,共12页
Geology of Shandong
