摘要
根据详细填图和研究资料，将区内中生代火山岩系划分为两个喷发旋回，分别属钙碱性系列和碱性系列，并对其岩石化学和地球化学特征等作了较系统的总结。查明了区内火山活动特点，恢复和圈定了数处火山机构，并对其喷发机制、演化规律进行了探讨。
Based on detailed mapping and research of data,the Mesozoic volcanics in the area are divided into two eruption cycles, corresponding to calc－ alkaline series and alkaline series,respectively. A systematic conclusion has been made on the volcanics with respect to petrochemical and geochemical characteristics. The special features of volcanism in the area has been disclosed. Several places of volcanic apparatus are restored or dilimited and a discussion is made on their eruption mechanism and evolution law.
出处
《安徽地质》
2000年第4期252-260,共9页
Geology of Anhui
关键词
中生代火山作用
火山机构
演化规律
北淮阳
Mesozoic volcanism
volcanic apparatus
evolution law
Beihuaiyang a4
