湖北金牛火山岩盆地火山岩成因及构造环境

Volcanic Rock Origin and Tectonic Environment in Jinniu Volcanic Rock Basin,Hubei Province

通过岩石学、岩石化学、地球化学的研究,笔者认为金牛火山岩盆地中生代岩浆活动存在多个发展阶段,经历了晚侏罗世—早白垩世初期的岩浆侵入及火山初始爆发—间歇、白垩纪的鼎盛—减弱—衰亡。这些差异性和过渡演化趋势,反映中生代火山活动是受同一构造机制作用而发生与发展的,同时也反映不同阶段热动力作用具有一定的差异。

Through the research of petrology, petrochemistry, geochemistry, the authors thought that Jinniu volcanic rock basin Mesozoic magmatie activity had several stages of development, has experienced the Late Jurassic-Early Cretaceous initial period magmatic intrusion and the volcano initial eruption-intermittence, the Cretaceous Peak-weakens-decay. These differences and the transition evolution tendency, reflected that the Mesozoic volcanic activity is occurred the identical structure mechanism function with the development, simultaneously also reflected that the different period hot dynamic action has certain difference.