西藏羊八井—林周地区水热成矿系统与模拟
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摘要
在区域成矿构造系统的控制之下,羊八井—林周地区新生代水热成矿随着高原的隆起过程,显示了由羊八井向东、时间由新到老、成矿热液氢氧同位素呈现有规律变化,形成一个由断裂网络和热源驱动控制的水热成矿系统。概括三维有限元构造应力场和热模拟对区域构造力、热力驱动的模型进行设计、计算分析,及天然地震统计分析结果,作者认为在研究区存在一个一直延续至今的水热成矿典型区域和通道,具有重要的构造动力成岩成矿的理论意义,并且在寻找构造、热驱动的水热矿床方面得到实际应用。
With the control of the regional metallotectonic system,To the east from Yangbajing and Time from new arrive old,the isotopic analyses of hydrogen and oxygen from hydrothermal presents the regulation variety along with the plateau uplift.The Hydrothermal Metallogenesis System with the control of the fault network and heater drive.According to the computation and analysis of the tectonic stress,heat simulation and the deepth of earthquake focus,it can be formed that there is a type area of Hydrothermal Metallogenesis System until now.It has very important theories meaning of the dynamic metallotectonic and has got the actual application in the finding structure and hydrothermal mineral deposit driven by heat.
With the control of the regional metallotectonic system,To the east from Yangbajing and Time from new arrive old,the isotopic analyses of hydrogen and oxygen from hydrothermal presents the regulation variety along with the plateau uplift.The Hydrothermal Metallogenesis System with the control of the fault network and heater drive.According to the computation and analysis of the tectonic stress,heat simulation and the deepth of earthquake focus,it can be formed that there is a type area of Hydrothermal Metallogenesis System until now.It has very important theories meaning of the dynamic metallotectonic and has got the actual application in the finding structure and hydrothermal mineral deposit driven by heat.
引文
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[2]孙鸿烈,郑度.青藏高原形成演化与发展[M].广州:广东科技出版社,1998.73~128.
[3]李学礼.论热源、水源、矿(铀)源三源成矿问题[J].华东地质学院学报,1992,15(2):101~113.
[4]孟宪刚,邵兆刚,杨朝斌,等.西藏林周地区新生代水热成矿地质模型[J].地质通报,2004,23(4):382~389.
[5]李光明,王高明,高大发,等.西藏冈底斯南缘构造格架与成矿系统[J].沉积与特提斯地质,2002,22(2):1~7.
[6]张培震,王琪.中国大陆现今地壳运动与构造变形[A].见:马宗晋、汪一鹏、张燕平主编,青藏高原岩石圈现今变动与动力学[C].北京:地震出版社,2001.21~35.
[7]王绳祖.亚洲大陆岩石圈多层构造模型和塑性流动网络[J].地质学报,1993,67(1):73~81.
[8]徐志琴,崔军文.大陆山链变形构造动力学[M].北京:冶金工业出版社,1986.1~196.
[9]崔作舟,尹周勋,高恩元,等.亚东—格尔木岩石圈地学断面综合研究.青藏高原速度结构和深部构造[M].北京:地质出版社,1992.1~112.
[10]赵文津及INDEPTH项目组.喜马拉雅山及雅鲁藏布江缝合带深部结构与构造研究[M].北京:地质出版社,2001.63~355.
[11]多吉.典型高温地热系统—羊八井热田基本特征[J].中国工程科学,2003,5(1):42~47.
[12]崔军文,朱红,武长得.亚东—格尔木岩石圈地学断面综合研究,青藏高原岩石圈变形及其动力学[M].北京:地质出版社,1992.1~165.
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