论文部分内容阅读
长白山脉中生代火山岩带与东侧之洋陆边界平行展布。火山岩浆作用可划分为三大构造阶段(2 30～ 190Ma ,178～ 12 5Ma ,118～ 6 5Ma) ,四大旋回 ,11个旋回和 2 4个火山事件。由安粗岩系和钙碱性岩系组成的一个新的火山岩浆作用构造类型 ,称之为走滑大陆边缘—拉分张裂性火山岩系。洋陆板块互动方式的更迭及速率的变化是火山岩浆作用地球动力学深部发展过程的主控因素。
The Mesozoic volcanic belt in the Changbai Mountains is parallel to the oceanic land boundary on the east side. The volcanic magmatism can be divided into three major tectonic stages (230 ~ 190Ma, 178 ~ 125Ma, 118 ~ 65Ma), four cycles, 11 cycles and 24 volcanic events. A new type of volcanic magmatic assemblage consisting of amphibolite and calc-alkaline rock series is termed a strike-slip continent-rifted fractured volcanic rock series. The interaction of oceanic plate interaction and the change of velocity are the main controlling factors for the deep development of geodynamics of volcanic magmatism.