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第一节 中生代火山凹陷形态与分布 (一)火山凹陷形态与分布 中国东部中生代火山岩的分布受区域构造控制。按其规模,可分为五个级别,从大到小为:火山构造带—火山岩带—火山凹陷—火山机构—火山。火山构造带与Ⅰ级构造
Section I. Morphology and distribution of Mesozoic volcanic sags (I) Morphology and distribution of volcanic sags The distribution of Mesozoic volcanic rocks in eastern China is controlled by the regional structure. According to its size, can be divided into five levels, descending as follows: volcanic belt - volcanic belt - volcanic sag - volcanic institutions - volcanoes. Volcanic structural belt and Ⅰ grade structure