湖北随北地区地质事件序列的确定及其意义

THE ESTABLISHMENT OF THE SEQUENCE OF GEOLOGICAL EVENTS IN NORTHERN SUIZHOU AND ITS SIGNIFICANCE

本文分析了湖北省随州市北部变质岩区的区域地质背景以及沉积、火山、侵入、变质、变形、矿化等地质事件,总结出了该区地质事件的序列及其对应的四大构造型式:古活动大陆边缘构造、古裂谷构造、逆冲推覆构造及盆岭构造。这些构造型式反映了地壳的“开”、“合”规律。

This paper deals with the regional geological setting of metamorphic rocks in Northern Suizhou of Hubei Province. Those geological events such as sedimentation, volcanism, intrusion, metamorphism, deformation and mineralization are also discussed here. At the same time, the authors has summed up a sequence of geological events and the four relevant types of structure, which include active paleocontinental margin, paleorift, overthrust nappe structure and basin—range structure. These types of structure reflect the open—and—close rhythm of the Earth crust.