| 中国东南大陆边缘中新生代地幔柱活动的岩石学记录 |
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| 引用本文：毛建仁,陶奎元,邢光福,杨祝良,赵宇.1999.中国东南大陆边缘中新生代地幔柱活动的岩石学记录[J].地球学报,20(3):253-258. |
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| 基金项目:地质矿产部“九五”重大基础研究项目 |
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| 中文摘要:东南大陆边缘华北陆块与扬子陆块的碰撞造山以及华夏陆块西南部离散块体拼合（230 ～150 Ma） ，是受中特提斯消减作用的影响，其后叠加了古太平洋对古欧亚大陆的伸展—走滑—扩张（145 ～70Ma） ，新生代后研究区进入了大陆裂谷期。从晚中生代—新生代，岩浆来源由上地壳源—中下地壳源—大陆岩石圈地幔源—软流圈地幔源，构成了一个漫长而巨大的构造岩浆旋回。145±5Ma和20±5Ma两次重要的地质转换是联系板块构造和幔柱构造的纽带。 |
| 中文关键词:岩石学记录 幔柱构造 东南大陆边缘 |
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| Petrological Records of the Mesozoic-Cenozoic Mantle Plume Tectonics in Epicontinental Area of Southeast China |
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| Abstract:The horizontal collision of the North China block with the Yangtze block as well as the intercontinental subduction of some divergent microcontinental terranes in the southwestern part of the Cathaysian block resulted from the influence of Tethyan tectonic regime during 230～150Ma.The geodynamic background was extension_strike slip_dilation of the Paleopacific ocean plate against the Paleoeurasian continent during 145～70Ma.The southeast China continent has entered the period of continental valley since 60Ma.The magmatic sources from late Mesozoic to Cenozoic were derived from the upper crust through the middle_lower crust continental lithosphere mantle to the asthenosphere mantle,which made up a long and huge tectonomagmatic cycle.Two significant geological inversions of 145±5 Ma and 20±5 Ma established an important link between the plate tectonics and mantle plume tectonics. |
| keywords:petrological records mantle plume epicontinental area of Southeast China |
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