胶莱盆地区域地球物理场特征及构造单元划分

Characteristic of Regional Geophysical Field in Jiaolai Basin and Its Tectonic Unit Division

摘要:

胶莱盆地第四系分布广泛 ,其构造单元可利用重磁资料进行划分。本文对鲁东地区各岩层的磁性及密度资料进行了汇总 ,按物性特征将其划分为 5种类型。根据胶莱盆地重磁场形态、走向、幅值等特征 ,可将其划分为 6个分区 ,其中七级镇重高磁高低相间区为该盆地的特殊地段。胶莱盆地共划分 1 4个次级构造单元 ,它们的形成与发展受七级镇断裂带的控制。

Abstract:

According to the study on the data of magnetism and density of every-rock-formation in jiaodong area, the rock-formations can be divided into five types on basin of their physical characteristic. Six sub-divisions of gravity and magnetism field can be classified and Qiji town area is a special one with high gravity and high gravity alternating with low magnetism. Fourteen subtectonic units have been determined in the basin and their formation and development controlled by Qiji town fault.