| 辽宁建平加里东期侵入岩地质特征及侵位机制 |
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| 引用本文： | 陈树良,高世荣,李淑霞.辽宁建平加里东期侵入岩地质特征及侵位机制[J].国土资源,1997(1). |
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| 作者姓名： | 陈树良 高世荣 李淑霞 |
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| 作者单位： | 地质矿产部辽宁地质矿产勘查开发局区域地质调查队 |
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| 摘 要： | 建平加里东期侵入岩的Ｕ－Ｐｂ一致年龄为５７３．９Ｍａ，侵位时期为加里东早期。按照岩石谱系单位划分原则，由早至晚依次划分为上沟单元闪长岩、周家台单元石英闪长岩、房身单元花岗闪长岩、阳坡单元花岗岩，归并为上马架子超单元。岩浆演化由中性至酸性。成因类型为Ⅰ型花岗岩类，物质来源于下地壳。依据宏观构造及显微构造分析，确定属于气球膨胀式侵位机制。由多期脉动式侵入，构成了完整的壳核构造。
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| 关 键 词： | 上马架子 超单元“Ⅰ”型 气球膨胀式 加里东 |
AGE OF GRANITES IN WESTERN LIAONING |
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| Sun Jinggui,Lian Changyun.AGE OF GRANITES IN WESTERN LIAONING[J].Land & Resources,1997(1). |
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| Authors: | Sun Jinggui Lian Changyun |
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| Abstract: | The area of western Liaoning is located in the tectono magmatic belt along the north margin of North China platform,in which various types of granites are widely distributed.The granites can be divided into three granitic series i.e.biotite adamellite series,garnet bearing adamellite series and granodiorite adamellite series.It has been demonstrated that the above mentioned granites formed in Mesozoic Era and resulted from layer melting of deep seated material.This recognition is totally different from the viewpoint that the granites formed in Proterozoic Era. |
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| Keywords: | Granite Rb Sr isotope Western Liaoning |
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