中国北东部及邻区中生代火山岩成因分析

ANALYSIS ON THE GENESIS OF MESOZOIC VOLCANIC FORMATIONS IN NORTHEAST CHINA AND ADJACENT AREA

运用大陆动力学原理及地幔热柱多级演化观点，通过对中国北东部及邻区中生代火山岩形成的构造环境分析，提出了地幔热柱的多级演化、中下地壳塑性层流及拆离带附近的岩浆房、上地壳的隆陷、区域应力场的变化及深大断裂的沟通是形成中国北东部中生代大规模火山活动的构造机制．

The theories of continental dynamics and mantle plume multiple grade evolution are employed to analyse the tectonic settings of Mesozoic volcanic formations in Northeast China and adjacent area. It can be concluded that the tectonic mechanism of the volcanic activities largely occurred in Northeast China and adjacent area are the multiple grade evolution of the mantle plume tectonic, the laminar flow meso-lower curst, the chamber near the departure zone, the uplift and depression in upper curst, the change of the regional stress field, and the connection of deep and large faults.