【摘要】 在中国东南部晚中生代时期(J2-K2),发育着大规模岩墙群、广泛的岩浆混合作用(包括侵入杂岩中的岩浆混合和火山岩中的复合岩流/双峰式火山岩)、大范围玄武岩浆的底侵、巨型链状火山岩带、晶洞花岗岩-A型花岗岩带、变质核杂岩,以及玄武岩的无斑隐晶-细粒结构和花岗岩的均匀块状构造.对它们的研究表明,它们形成于伸展应力体制,是伸展构造的岩石学标志,发生在晚中生代整个地质时期,并认为这一伸展构造由古太平洋库拉板块对欧亚板块的消减作用诱发.更多还原

【Abstract】 In this paper, the authors described the characteristics of Late Mesozoic igneous rocks in Southeast China. They involved large-scale dike swarms, magma mixing of intrusion complexes and composite lava flows, underplating of basaltic magma, huge volcanic chains, miarolite granite and A-type granite zones, metamorphic core complexes, and aphanitic-fine grained texture of basalt and massive structure of granite. All these features showed that the Late Mesozoic magmatism of SB-China developed in the tectonic setting of extension stress regime which was constrained by the subduction of the paleo-Pacific Kula plate beneath Eurasian plate.更多还原