特提斯构造带和星球级纬向构造体系  

TETHYAN TECTONIC BELT AND GLOBAL LATITUDINAL TECTONIC SYSTEM

作　　者：丘元禧[1] 

机构地区：[1]中山大学地球科学系,广东广州510275

出　　处：《地质力学学报》2003年第3期220-231,共12页Journal of Geomechanics

摘　　要：东特提斯东段位于现今南海及其周边地区,做为洋壳的岩石学记录———蛇绿岩带的现行展布呈U字形,它是印度板块与欧亚板块的碰撞、南海的扩张以及菲律宾-太平洋板块的向西推挤时,特提斯构造带受到扭曲而形成的。通过古地磁和岩石学记录复原其在白垩纪末古近纪初时的位置和形态,为一位于现今印度次大陆南端经加里曼丹北缘向东延伸的近EW向的挤压构造带,它向西和青藏地区经中亚扎格罗斯山脉和欧洲阿尔卑斯山脉联接成全球性的特提斯构造带,受控于星球级纬向构造体系。研究表明,冈瓦纳的裂散、亚洲的增生和特提斯构造带的演化都受控于星球级纬向构造体系。星球级纬向构造体系是控制板块边界和运动的重要的支配力量之一。The eastern segment of Eastern Tethys is located in the present South China Sea and its surrounding areas. As the petrological record of the occeanic crust,the ophiolite belt is distributed like the letter 'U'. I t was formed by contortion of the Tethyan tectonic belt during the collision o f the Indian plate and the Eurasian plate,spreading of the South China Sea and w est-directed compression of the Phillipine-Pacific plate.Its position and shap e in the terminal Cretaceous-initial paleogene reconstruct ed based on the paleo-magnetic and petrological records indicate that it was ne arly E-W trending compressive tectonic belt which extended from the south end o f the present Indian subcontinent eastward through the northern margin of Kalimantan to the s outheastern Phillipine Archipelago by the end of the Late Cretacous.Towards the west it linked with the Qinghai-Tibet area and then the central Asi an Zagros Mountains and the European Alps Mountains to form a global Tethyan tec tonic belt.It is controlled by the global latitudinal tectonic system.Study indicates that Gondwana dispersion,Asian accretion and geological evolution of the Tethyan tect onic belt were controlled by the global latitudinal tectonic system.The global l atitudinal tectonic system is one of the important forces controlling the plate boundary and movement.

关 键 词：特提斯 板块构造 构造体系 星球级纬向构造体系 

分 类 号：P552[天文地球—构造地质学]