| CCSD HP-UHP变质岩石英脉和东海水晶中有机包裹体的发现及其意义 |
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| 引用本文： | 徐莉,孙晓明,翟伟,梁业恒,汤倩,梁金龙.CCSD HP-UHP变质岩石英脉和东海水晶中有机包裹体的发现及其意义[J].地质学报,2007,81(5):654-658,I0002. |
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| 作者姓名： | 徐莉 孙晓明 翟伟 梁业恒 汤倩 梁金龙 |
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| 作者单位： | 1. 中山大学地球科学系,广州,510275
2. 中山大学地球科学系,广州,510275;中国科学院同位素年代学和地球化学实验室,广州,510640 |
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| 基金项目： | 本文为国家自然科学基金重大项目（编号40399142）、国家重点基础研究发展规划“973”项目（编号2003CB716501）、中国科学院同位素年代学和地球化学实验室合作基金（编号GIGIso-0504）和中国地质大学地质过程与矿产资源国家重点实验室开放基金（编号2003015）资助的成果. 中国科学院广州地球化学所刘德汉研究员、中山大学测试中心张卫红工程师及华南理工测试中心江山高级工程师在本次研究的样品测试分析过程中给予了大力的支持和帮助,在此深表谢忱! |
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| 摘 要： | 荧光显微镜下观察、激光拉曼和显微红外测试,首次在CCSDHP-UHP变质岩石英脉和东海水晶中发现了含有沥青和烃类的有机包裹体,进一步证实大别-苏鲁超高压变质带曾经历了快速的俯冲与折返过程,俯冲板块沉积物中的有机质未能充分地演化和成熟。俯冲板块在进变质过程中强烈脱水,释放出含烃流体,并被在板块抬升及其伴随的减压重结晶和退变质过程中形成的石英脉和水晶体所俘获。
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| 关 键 词： | 有机包裹体 苏鲁超高压变质带 石英脉 东海水晶 中国大陆科学钻探（CCSD） |
| 修稿时间： | 2006-11-172007-01-08 |
Discovery of Organic Inclusions in Quartz Veins in CCSD HP-UHP Metamorphic Rocks and Donghai Crystals and Its Geological Implications |
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| XU Li,SUN Xiaoming,ZHAI Wei,LIANG Yeheng,TANG Qian,LIANG Jinlong.Discovery of Organic Inclusions in Quartz Veins in CCSD HP-UHP Metamorphic Rocks and Donghai Crystals and Its Geological Implications[J].Acta Geologica Sinica,2007,81(5):654-658,I0002. |
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| Authors: | XU Li SUN Xiaoming ZHAI Wei LIANG Yeheng TANG Qian LIANG Jinlong |
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| Institution: | 1 Earth Sciences Department of Sun Yatsen University, Guangzhou; 510275 ; 2 Key Laboratory of Isotope Geochronology and Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences , Guangzhou, 510640 |
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| Abstract: | Large amount of bitumen and hydrocarbon-bearing organic inclusions were recognized in quartz veins in HP-UHP metamorphic rocks from Chinese Continental Scientific Drilling(CCSD)and Donghai crystals by observation under fluoroscope and determination with Laser Raman and infrared spectroscopy,reconfirming that the Dabie-Sulu UHPM belt undergone rapid subduction and exhumation,thus the organic materials in the sediments in the subducted slab were not highly matured and transformed to kerogen or graphite.The hydrocarbon-bearing fluids were released during dehydration and prograde metamorphism,and were captured by quartz veins or crystals,which were deposited during plate exhumation and the subsequent pressure decline and retrograde metamorphism. |
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| Keywords: | organic inclusions Dabie-Sulu UHPM belt quartz veins Donghai crystal Chinese Continental Scientific Drilling(CCSD) |
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