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作 者:毛建仁[1] 高桥浩[2] 厉子龙[3] 中岛隆[2] 叶海敏[1] 赵希林[1] 周洁[1] 胡青[1] 曾庆涛[4]
机构地区:[1]中国地质调查局南京地质矿产研究所,江苏南京210016 [2]日本产业技术研究院地质和地质情报研究所,日本筑波3058567 [3]浙江大学地球科学系,浙江杭州310027 [4]南京大学地球科学系,江苏南京210093
出 处:《地质通报》2009年第7期844-856,共13页Geological Bulletin of China
基 金:中国地质调查局科技外事部基础研究项目(编号:1212010611805)资助
摘 要:重点讨论了中国东南部和日本中、新生代火成岩的时空分布及其构造环境,总结了两者的异同性。印支期和燕山早期(190~170Ma)中国东南部和日本具有不同的岩浆活动演化史。在165~150Ma期间,中国东南部广泛分布有过铝和弱过铝的S型花岗岩,而170~130Ma则为日本岩浆活动沉寂期。燕山晚期,中国东南部和日本都发生大规模的火山-侵入活动,同是库拉-太平洋板块向欧亚大陆俯冲-碰撞及其后伸展-裂解的产物,日本开始时代晚(130Ma),并一直持续到始新世(45Ma)。进入喜马拉雅期,在日本海打开之前(>15Ma),中国东南部和日本同处于大陆伸展构造环境,在日本海打开之后(<15Ma),中国东南部和日本进入完全不同的构造演化阶段。The spatio-temporal distributions and tectonic environments of the Meso-Cenozoic igneous rocks in SE China and Japan are discussed mainly, as well as their similarities and differences are summarized in the paper. There are different magmatic evolution histories during Indosinian and Yanshanian periods (190-170Ma) in SE China and Japan. The S-type granites ofperaluminous and weak peraluminous were most widespread during 165-150Ma in SE China, but there was an inactive period of the magmatism during 170- 130Ma in Japan. The large scale of the volcano-intrusions were taken place during the Late Yanshanian period both SE China and Japan, which all were produced by the initial subduction-collision and later extensionbreak up of the Kula-Pacific plate toward Eurasian continent. Large-scale volcano - intrusions in Japan were later (130Ma) than SE China, and continued to the Eocene (45Ma). Both SE China and Japan were situated in the tectonic environments of continental extension before the Japan Sea was opened(〉15Ma), and the SE China and Japan were located in completely different settings of the tectonic evolution after the Japan Sea was opened(〈15Ma).
关 键 词:时空分布 岩浆作用 中 新生代 中国东南部和日本
分 类 号:P534.5[天文地球—古生物学与地层学] P534.6[天文地球—地质学]
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