| 华北地台南缘燕山期板内花岗斑岩类地球化学特征及成分空间变化规律 |
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| 引用本文： | 李泽九,骆庭川,张本仁.华北地台南缘燕山期板内花岗斑岩类地球化学特征及成分空间变化规律[J].地球科学,1994,3(3). |
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| 作者姓名： | 李泽九 骆庭川 张本仁 |
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| 作者单位： | 中国地质大学地球化学系 武汉430074 |
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| 基金项目： | 国家自然科学基金，地质行业科学发展基金联合资助项目（项目号48970171） |
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| 摘 要： | 华北地台南缘燕山期花岗斑岩类小岩体形成于大陆板内环境,它具有类似岛弧—活动大陆边缘钙碱系列岩石地球化学特征,其成分在空间上呈现极性特征。本文探讨了这种成分极性与中、新生代俯冲带花岗岩类的可比性,并根据锶、钕同位素资料揭示成岩物质的可能来源及造成成分空间变化的可能原因。
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| 关 键 词： | 板内花岗斑岩类 成分极性 地球化学特征 华北地台南缘 |
Geochemical Characteristics and Spatial Compositional Variation of Yanshanian Intraplate Granite-Porphynes on Southern Margin of North China Craton |
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| Li Zejiu Luo Tingchuan,Zhang Benren.Geochemical Characteristics and Spatial Compositional Variation of Yanshanian Intraplate Granite-Porphynes on Southern Margin of North China Craton[J].Earth Science-Journal of China University of Geosciences,1994,3(3). |
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| Authors: | Li Zejiu Luo Tingchuan Zhang Benren |
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| Abstract: | The Yanshanian granite - porphyries along the southern margin of North China Craton were developed in an intraplate environment. They have geochemical characterstics similar to calc-alkaline suites of island-arc and active Continental margins and show spatial compositional polarity that is comparable to the polarity exhibited by the Mesozoic-Cenozoic subduction granites in the same region. Source of the intraplate porphyries and genesis of their polarity are discussed by Sr -Nd isotopic data. |
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| Keywords: | intraplate granite-porphyry compositional polarity geochemical characteristic southern margin of North China Craton |
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