摘要
晚元古宙，胶北隆起在造山运动后期开始发生ＮＷ（Ｗ）→ＳＥ（Ｅ）方向的地壳伸展作用，突出表现于前寒武纪结晶基底内部，持续时间很长久（自晚元古宙开始，断续到中生代印支—燕山期），具有改造期伸展作用特点，区域构造处于十分激化的状态。
In the Late Proterozoic, in the Jiaobei tectonic uplifting there existed the crustal extension from NW(W) to SE(E) during the late orogenic phase. The crustal extension mainly occurred in the Precambrian crystalline foundation and lasted a very long time interval (from the Late Proterozoic to Mesozoic Indo-Chinese Epoch and Phase of Yenshanian). The crustal extension had the extension features of crustal remodelling period, and the tectonic activization was very violent, which resulted in tectonic folding and lage scale intrusion of granitic magma.
基金
地矿部"八五"重大基础研究项目
关键词
胶北隆起
晚元古宙
地壳
伸展作用
Jiaobei tectonic uplifting, the Late Proterozoic, crustal extension
