洞错混杂带内部结构及构造岩片组合特征

为了对洞错混杂带进行深入研究,通过遥感图像解译将其分为玄武岩岩片带、蛇绿混杂岩带和蛇绿岩带3个次级构造带,这3个次级构造带在平面上近平行延伸,向东、西方向收敛,在剖面上呈叠瓦式向南逆冲.实地检查证明,遥感解译结果符合实际情况,各带内岩块的物质组成、几何结构大不相同,中部的蛇绿混杂岩带是洞错混杂带的主带.

Internal Structure and Assemblage Features of Tectonic Slices in Dong Cuo Melange Zone

In order to make a thorough study of the Dong Cuo melange zone,the authors used remote sensing interpretation to divide the Dong Cuo melange zone into three secondary tectonic slices belts,and found that the three belts extend nearly in parallel in the plane,converge eastward and westward,and thrust southward one by one in profile.Field investigation shows that the interpretation results are in accordance with the practical situation,and the material composition and geometric structure of rocks in various slices are different.The ophiolite melange belt is the main belt in the Dong Cuo melange zone.