| 北山北亚带干河梁岩体地质特征 |
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| 引用本文： | 刘强. 北山北亚带干河梁岩体地质特征[J]. 甘肃地质, 2005, 14(1): 9-14 |
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| 作者姓名： | 刘强 |
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| 作者单位： | 中国地质大学,湖北,武汉,430074;甘肃省地矿局第三地勘院,甘肃,兰州,730000 |
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| 基金项目： | 中国地质调查局区调项目成果(编号:200113000057)。 |
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| 摘 要： | 干河梁岩体是中酸性复式岩体,不同岩石类型之间接触关系清楚,由早到晚其侵位顺序为石英闪长岩→英云闪长岩→花岗闪长岩→斑状二长花岗岩→黑云二长花岗岩→钾长花岗岩。岩石地球化学资料表明,该岩体与碰撞后型花岗岩相似。依据同位素测年结果,确定其侵位时代为晚古生代晚期。
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| 关 键 词： | 干河梁岩体 地质-地球化学特征 构造环境 甘肃北山北亚带 |
THE GEOLOGICAL FEATURES OF GANHELIANG ROCK MASSOF NORTH SUB-ZONE IN BEISHAN |
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| LIU Qiang. THE GEOLOGICAL FEATURES OF GANHELIANG ROCK MASSOF NORTH SUB-ZONE IN BEISHAN[J]. Acta Geologica Gansu, 2005, 14(1): 9-14 |
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| Authors: | LIU Qiang |
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| Abstract: | Ganheliang rock mass is neutral and acid complex body, the contact relation is clear between different type of rock. From early to late, the order of emplacement is quartz diorite, tonalite diorite, granodiorite, porphyry-adamellite, biotite-adamellite, moyite. The geochemical data shows that the rock mass is similar to post-collision type granite. The age of emplacement is at Upper Paleozoic Era from the result of isotopic age determination. |
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| Keywords: | Ganheliang rock mass Geological and geochemical features Tectonic setting North sub-zone of Beishan in Gansu Province |
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