根据３０多个玄武岩体的详细的实际资料，将研究区内中新生代玄武岩划分为５种类型，分属２个岩浆系列，判别出３种原生岩浆。橄榄拉斑玄武岩、白榴碧玄岩和碧玄岩为原生岩浆；碱性橄榄玄武岩和石英拉斑玄武岩为进化岩浆。玄武岩的矿物学和地球化学特征表现出大陆板内玄武岩之属性，是大陆岩石圈小范围热扰动的产物 According to the detailed actual data of more than 30 basalts, the Mesozoic-Cenozoic basalts are divided into five types and belong to two magmatic series, and three kinds of primary magma are identified. Olive tholei basalt, white pomegranate Xuan rock and bismuth rock for the native magma; alkaline olivine basalts and quartz tholei basalts for the evolution of magma. The mineralogy and geochemistry of basalts show the properties of basalts in continental plates and are the product of small-scale thermal perturbations in the continental lithosphere