| 辽西地区花岗岩的形成时代 |
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| 引用本文： | 孙景贵,连长云.辽西地区花岗岩的形成时代[J].国土资源,1997(1). |
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| 作者姓名： | 孙景贵 连长云 |
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| 作者单位： | 长春地质学院地球科学系 |
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| 摘 要： | 位于华北板块北缘构造－岩浆带内的辽西地区，广泛发育不同类型的花岗岩。作者将其划分为：①黑云母二长花岗岩系列；②含石榴石二长花岗岩系列；③花岗闪长岩－二长花岗岩系列。研究结果表明，这３个系列的花岗岩均形成于中生代，是深部物质（下地壳或上地幔）分层熔融的产物。这一认识与花岗岩主体形成于古生代的观点是截然不同的。
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| 关 键 词： | 花岗岩 Rb-Sr同位素 辽西 |
PRELIMINARY DISCUSION ON THE ESTABLISHMENT OF PROTEROZOIC STRATIGRAPHIC FRAMEWORK OF FANHE AREA,TIELING |
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| Xu,Wenquan,Li Zhenyang,Liu,Yonghai,Liu,Zhongyi,Ma,Zhonglin.PRELIMINARY DISCUSION ON THE ESTABLISHMENT OF PROTEROZOIC STRATIGRAPHIC FRAMEWORK OF FANHE AREA,TIELING[J].Land & Resources,1997(1). |
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| Authors: | Xu Wenquan Li Zhenyang Liu Yonghai Liu Zhongyi Ma Zhonglin |
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| Abstract: | The Proterozoic strata in Fanhe area,Tieling started from Proterozoic aulacogen sedimentation.Based on the research results on lithostratigraphy,biostratigraphy,chronostratigraphy,and the theory on modern sequence stratigraphy,the proterozoic strata in Fanhe area from lower to upper can be divided into 6 sequences:Guanmenshan, Hutouling,Erdaogou,shimen,Yangshitun,and Yubeigou sequences.Each sequence is only consisted of transgressive system domain and high water level system domain,respectively representing stratigraphic textures of retrograding sedimentation and regressive progradation,and between them,the middle starvation section is mainly aggradation. Between each sequences,all of them are unconformity interfaces including coastal exposure belts and transgressive surfaces.Then the paper established the regional stratigraphic framework. |
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| Keywords: | Fanhe area Proterozoic Sequence stratigraphic unit System domain Stratigraphic framework |
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