| 内蒙古大青山一带早元古宙钾长花岗岩系的深熔成因及其构造环境 |
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| 引用本文： | 曹林,曲以秀.内蒙古大青山一带早元古宙钾长花岗岩系的深熔成因及其构造环境[J].吉林大学学报(地球科学版),1996(1). |
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| 作者姓名： | 曹林 曲以秀 |
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| 作者单位： | 长春地质学院地球科学系，东北大学秦皇岛分校 |
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| 摘 要： | 内蒙古大青山一带钾长花岗岩系同早元古宙再造岩系密切相伴生，其地质学、岩石学和地球化学特征表明，该区早元古宙时陆－陆碰撞挤压－逆冲作用引发陆壳物质的变质－深熔作用，生成钾长花岗质岩浆，经团结先后生成了黑云母二长花岗岩－正长花岗岩－碱长花岗岩系列岩石。因其经受了由北向南的挤压－逆冲作用，也就构成了东西向的钾长花岗岩带。
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| 关 键 词： | 早元古宙，钾长花岗岩系，深熔作用，挤压－逆冲作用，大青山 |
ANATEXIS ORIGIN AND TECTONIC ENVIRONMENT OF EARLY PROTEROZOIC K-FELDSPAR GRANITIC ROCKS IN DAQINGSHAN AREA |
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| Cao Lin,Qu Yixiu.ANATEXIS ORIGIN AND TECTONIC ENVIRONMENT OF EARLY PROTEROZOIC K-FELDSPAR GRANITIC ROCKS IN DAQINGSHAN AREA[J].Journal of Jilin Unviersity:Earth Science Edition,1996(1). |
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| Authors: | Cao Lin Qu Yixiu |
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| Abstract: | The K-feldspar granitic rocks in Daqingsban area are closely coexisted with the early proterozoic reworhed rock series. The geological,petrological and geochemical tharacteristics indicate that the K-feldspar granitic magma was generateel by the metamorphic anatexis of continental materials during the early proterozoic continent-continent collision-compression-thrusting,During crystallization,biotite adamellites syenogranites-alkali-feldspor granites were formed from early to late.The sovthward compression-thrusting made the K-feldspar granites outcrop in the direction E-W at the present time. |
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| Keywords: | Early Proterozoic K-feldspar granites anatexis compressionthrusting Daqingshan |
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