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| 大别山双河硬玉石英岩石英中的纳米-亚微米级流体包裹体 | |
| 引用本文： | 吴秀玲,孟大维,韩郁菁,韩勇,郑建平.大别山双河硬玉石英岩石英中的纳米-亚微米级流体包裹体[J].矿物岩石,2005,25(2):7-10. |
| 作者姓名： | 吴秀玲 孟大维 韩郁菁 韩勇 郑建平 |
| 作者单位： | 1. 中国地质大学测试中心、地质过程与矿产资源国家重点实验室,湖北,武汉,430074 2. 中国地质大学材料科学与化学工程学院,湖北,武汉,430074 3. 中国地质大学,北京,地学实验中心,北京,100083 |
| 基金项目： | 国家自然科学基金(Nos.40472103,40425002,40272083,40172019);湖北省自然科学基金(No.2002AB020,2001ABB04);中国地质大学地质过程与矿产资源国家重点实验室科学基金(No.MGMR2002-24,2001ABB04) |
| 摘 要： | 用透射电子显微镜(TEM)观察产于大剐山双河地区含柯石英硬玉石英岩矿物石英中纳米级至亚微米级的流体包裹体超微观结构特征发现：大多数包裹体呈圆形或负晶形(粒径大多为10nm～350nm)，构成宽的密集的包裹体串。TEM揭示了柯石英和寄主矿物石英之间为共晶格取向连生关系，并寻找到在峰期变质条件下高盐流体存在的有力证据。流体包裹体经常伴随着许多相互连接的位错，并且与位错和位错壁等交生在一起，形成网络分布，这是在光学显微镜尺度下所不能探测到的。非爆裂的流体渗漏可能通过H2O或CO2分子沿位错的管道扩散，从包裹体进入寄主矿物石英，因而导致原来包裹体密度和成分的变化。 |
| 关 键 词： | 超高压硬玉石英岩 石英 纳米级流体包裹体 TEM 大别山 |
| 文章编号： | 1001-6872(2005)02-0007-04 |
NANO-SCALE FLUID INCLUSIONS IN QUARTZ OF JADEITE QUARTZITE AT SHUANGHE,DABIE MOUNTAINS |
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| WU Xiu-ling,MENG Da-wei,HAN Yu-jing,HAN Yong,ZHENG Jian-ping.NANO-SCALE FLUID INCLUSIONS IN QUARTZ OF JADEITE QUARTZITE AT SHUANGHE,DABIE MOUNTAINS[J].Journal of Mineralogy and Petrology,2005,25(2):7-10. | |
| Authors: | WU Xiu-ling MENG Da-wei HAN Yu-jing HAN Yong ZHENG Jian-ping |
| Institution: | WU Xiu-ling~1,MENG Da-wei~2,HAN Yu-jing~1,HAN Yong~3,ZHENG Jian-ping~11.Testing Centre,State Key Laboratory of Geological Processes and Mineral Resources,China University of Geosciences,Wuhan430074,China, 2.Faculty of Materials Science and Chemical Engineering,China University of Geosciences,Wuhan430074,China, 3.Geology Experiment Centre,China University of Geosciences,Beijing100083,China |
| Abstract: | Fluid inclusion at a nano-scale to submicron-scale in quartz from jadeite quartzite at Shuanghe,Dabie Mountains,have been investigated using transmission electron microscopy (TEM).Most fluid inclusions are rounded or negative crystal shaped,forming wide,swarm-like trails,most inclusions ranging from 10 nm to 350 nm in size.TEM reveals that the relationship between coesite and the host quartz is syntaxy and provides strong evidence of the occurrence of high-salty fluids at peak metamorphic conditions.Fluid inclusions are often connected to dislocations,which are undetected at the scale of optical microscopy.No decrepitative leakage of fluid inclusions may occur by pipe diffusion of molecule H_2O or CO_2 along dislocations from the inclusions into the host quartz,thus leading to original inclusion density and composition changes.It should be taken into full account for the correct petrological interpretation of micro-thermometric results. |
| Keywords: | UHP jadeite-quartzite quartz nano-scale fluid inclusion TEM Dabie Mountains |
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