| 甘肃大水二长岩类特征、结晶条件与侵位深度 |
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| 引用本文： | 刘晓春,王平安,董法宪,刘建民,徐刚,李亚东.甘肃大水二长岩类特征、结晶条件与侵位深度[J].地质力学学报,2003,9(1):62-69. |
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| 作者姓名： | 刘晓春 王平安 董法宪 刘建民 徐刚 李亚东 |
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| 作者单位： | 1. 中国地质科学院地质力学研究所, 北京 100081; |
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| 基金项目： | 国土资源部"九五"科技攻关课题(编号:95 02 002 02) |
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| 摘 要： | 对大水地区(石英)二长岩类的岩石学研究表明,忠格扎拉、忠曲和格尔括合岩体及周围的脉岩是同源岩浆演化的产物。尽管它们结晶的温度条件相似(约700℃~800℃),但侵位深度有明显的差别,西部忠格扎拉岩体最深(20km~22km),中部忠曲岩体次之(16km),东部格尔括合岩体最浅(8km~11km),并且后二者具有次火山岩的性质。这说明浅成岩浆对金矿的形成最为有利,这就是为什么在格尔括合和忠曲岩体附近形成了大型金矿床,而在忠格扎拉岩体周围仅找到金矿点的主要原因。
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| 关 键 词： | (石英)二长岩 侵位深度 金矿 大水地区 |
| 文章编号： | 1006-6616(2003)01-0062-08 |
| 收稿时间： | 2002/1/9 0:00:00 |
| 修稿时间： | 2002年1月9日 |
CHARACTERISTICS,CRYSTALLIZATION CONDITIONS AND EMPLACEMENT DEPTHS OF QUARTZ MONZONITES FROM DASHUI AREA,GANSU PROVINCE |
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| LIU Xiao-chun,WANG Ping-an,DONG Fa-xian,LIU Jian-min,XU Gang and LI Ya-dong.CHARACTERISTICS,CRYSTALLIZATION CONDITIONS AND EMPLACEMENT DEPTHS OF QUARTZ MONZONITES FROM DASHUI AREA,GANSU PROVINCE[J].Journal of Geomechanics,2003,9(1):62-69. |
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| Authors: | LIU Xiao-chun WANG Ping-an DONG Fa-xian LIU Jian-min XU Gang and LI Ya-dong |
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| Institution: | 1. Institute of Geomechanics, GAGS, Beijing 100081, China;2. No.3 Geological Party, Gansu Bureau of Geology and Mineral Resources, Gansu Hezuo 747000, China |
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| Abstract: | Study of petrology of quartz monzonites from Dashui area suggests that the Zhonggezhala,Zhongqu and Ge'erkuohe bodies are derived from a comagmatic region.Although their crystallization temperature of about 700℃~800℃ is exactly alike,the emplacement depth among them is very different,from 20km~22km of Zhonggezhala through 16km of Zhongqu to 8km~11km of Ge'erkuohe towards the east.Moreover,the later two bodies show a signature of subvolcanic rock.This implies that hypabyssal magma is beneficial to the gold mineralization in the Dashui area.This is why the large-scale gold deposit was defined in the vicinity of Ge'erkuohe and Zhongqu bodies,but only ore spot was found nearby Zhonggezhala body. |
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| Keywords: | quartz monzonite emplacement depth gold deposit Dashui area |
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