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Rock Deformation,Component Migration and 18O/16O Variations during Mylonitization in the Southern Tan-Lu Fault Belt

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Acta Geologica Sinica(English Edition) 2007年第2期81卷 297-311页

作者： YANG Xiaoyong LIU Deliang FENG Min YU Qingni wang kuiren CAS Key Laboratory of Crust-Mantle Materials and Environments School of Earth and Space Sciences University of Science and Technology of China Hefei Anhui 230026 CAS Key Laboratory of Isotope Geochronology and Geochemistry Guangzhou Institute of Geochemistry Guangzhou Guangdong 510640

This paper discusses the relationship between the volume loss, fluid flow and component variations in the ductile shear zone of the southern Tan-Lu fault belt. The results show that there is a large amount of fluids flowing through the shear zone during mylonitization, accompanied with the loss of volume of rocks and variations of elements and oxygen isotopes. The calculated temperature for mylonitization in different mylonites ranges from 446 to 484℃, corresponding to that of 475 to 500℃ for the wall rocks. The condition of differential stress during mylonization has been obtained between 99 and 210 MPa, whereas the differential stress in the wall rock gneiss is 70-78 MPa. The mylonites are enriched by factors of 1.32-1.87 in elements such as TiO2, P2O5, MnO, Y, Zr and V and depleted in SiO2, Na2O, K2O, Al203, Sr, Rb and light REEs compared to their protolith gneiss. The immobile element enrichments are attributed to enrichments in residual phases such as ilmentite, zircon, apatite and epidote in mylonites and are interpreted as due to volume losses from 15% to 60% in the ductile shear zone. The largest amount of SiO2 loss is 35.76 g/100 g in the ductile shear zone, which shows the fluid infiltration. Modeling calculated results of the fluid/rock ratio for the ductile shear zone range from 196 to 1192 by assuming different degrees of fluid saturation. Oxygen isotope changes of quartz and feldspar and the calculated fluid are corresponding to the variations of differential flow stress in the ductile shear zone. With increasing differential flow stress, the mylonites show a slight decrease of δ^18O in quartz, K-feldspar and fluid.

关键词： mylonitization ductile shear zone component migration oxygen isotopes southern Tan- Lu fault belt

Characteristics of Compositional Migration in Mylonites from the Ductile Shear Zones of the Southern Tancheng-Lujiang Fault Belt, Eastern Anhui Province

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Acta Geologica Sinica(English Edition) 1998年第1期72卷 37-50页

作者： YANG Xiaoyong LUI Deliang YANG Xueming wang kuiren DAI Jinxing Department of Earth and Space Sciences Advanced Centre for Earth Sciences and AstronomyUniversity of Science and Technology of Chinathe Third World Academy of SciencesHefeiAnhui 230026 Research Institute of Petroleum Exploration and Development China National Petroleum CorporationBeijing 100083

On the basis of field geology, three typical ductile shear zones in the southern part of the Tancheng-Lujiang fault belt have been chosen for a detailed study. Altogether ten samples of the tectonites have been collected for this study. The paper is focused on a comprehensive study of the tectonites in the medium-lower horizons of the ductile shear zones. The mineral compositions of the rocks are analyzed with EPMA and some typical whole-rock samples analyzed by chemical and ICP methods. Based on the comprehensive study of the characteristics of the deformation, the mineral assemblages and the changes of chemical composition of the bulk rocks, this paper presents a discussion on the relationship between the volume loss, the fluid flow and compositional changes during mylonitization of the ductile shear zones in this region. Our study shows that there are a large amount of fluids flowing through the shear zones during the process of mylonization, accompanied by the loss of rock volume and migration of elements and components. Modelling calculation results under different saturation conditions of fluids show that the maximum volume loss of the tectonites is about 60% relative to their protolith, while the fluid/rock ratio ranges from 10 to 103 in different ductile shear zones.

关键词： mylonite ductile shear zones volume loss fluid-rock interaction compositional migration Tancheng-Lujiang fault belt

Pleonaste in Boxian meteorite

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Chinese Science Bulletin 1998年第19期43卷 1656-1660页

作者： wang kuiren and HONG Ji’an Department of Earth and Space Sciences, University of Science and Technology of China Advanced Research Center for Earth Sciences and Astronomy, University of Science and Technology of China, Third World Academy of Sciences Department of Earth and Space Sciences University of Science and Technology of China China Advanced Research Center for Earth Sciences and Astronomy University of Science and Technology of China Third World Academy of Sciences Hefei China

There are three kinds of occurrence of pleonaste, a rare meteoritic mineral, totally found in Boxian meteorite. They are as the following: (ⅰ) occurring in the inner circle of the chondrule edge, of which a circle texture is composed; (ⅱ) occurring in the state of inclusions, included in an olivine chondrule, with close paragenesis of wadsleyite; (ⅲ) occurring in the state of porphyry. The chondrule in the first occurrence belongs to CA chondrules. The chemical compositions of pleonaste are heterogeneity except for the atomic ratios of Fe/(Mg+Fe), which can be attributed to the following reasons: (ⅰ) they are congenetic minerals; (ⅱ) the heterogeneity of the compositions of the solar clouds in the early states; (ⅲ) the chondrites are the multiple-stage evolution; (ⅳ) the further proof of Boxian meteorite is an unequilibrium common chondrite.

关键词： rare pleonaste in meteorites found genesis.

整合与异化——河北能源职业技术学院图书馆设计

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城市建筑 2005年第9期2卷 45-47页

作者：王冰冰王奎仁北京工业大学建筑与城市规划学院北京100102 北京工业大学建筑勘察设计院北京100102

整合基础上适当地激活异化建筑结构脉络,是建筑尊重城市、追求真实本质的基本设计法则。本文结合河北能源职业技术学院图书馆设计实践,从几何形体、空间秩序、均衡比例等方面分析了整合脉络的设计手法,并从局部空间异化和异性要素引入... 详细信息

整合基础上适当地激活异化建筑结构脉络,是建筑尊重城市、追求真实本质的基本设计法则。本文结合河北能源职业技术学院图书馆设计实践,从几何形体、空间秩序、均衡比例等方面分析了整合脉络的设计手法,并从局部空间异化和异性要素引入两方面探讨了如何把握激活异化的尺度。

关键词：结构脉络整合异化河北能源职业技术学院图书馆

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安徽亳县陨石不透明矿物研究

矿物学报 1987年第2期 107-112页

作者：王奎仁中国科学技术大学地球和空间科学系合肥

毫县陨石的不透明矿物有陨硫铁、铁纹石、镍纹石、镍黄铁矿、镁铁尖晶石、自然铜、石墨、方铁矿、铬铁矿、钛铁矿、磁铁矿、张衡矿及x矿物等。本文对它们进行了反光显微镜鉴定、X射线分析、反射率测定和电子探针分析。总结了不同化学群... 详细信息

毫县陨石的不透明矿物有陨硫铁、铁纹石、镍纹石、镍黄铁矿、镁铁尖晶石、自然铜、石墨、方铁矿、铬铁矿、钛铁矿、磁铁矿、张衡矿及x矿物等。本文对它们进行了反光显微镜鉴定、X射线分析、反射率测定和电子探针分析。总结了不同化学群的球粒陨石中FeO和MgO的含量变化规律。

关键词：陨石不透明矿物安徽

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安徽亳县陨石透明矿物研究

矿物学报 1987年第3期 238-244页

作者：王奎仁王俊新中国科学技术大学地球和空间科学系中国科学技术大学地球和空间科学系合肥

本文对毫县陨石透明矿物中橄榄石、辉石、长石、石英、白云石、方解石和黑云母等作了研究。以此为据讨论了毫县陨石的化学群、岩石类型、热变质作用和冲击变质作用等等。

关键词：陨石透明矿物安徽

马鞍山地区不同类型绿松石稀土元素地球化学研究

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稀土 1997年第4期18卷 1-3,29页

作者：杨晓勇王奎仁刘向华中国科学技术大学地球和空间科学系

本文针对皖南马鞍山地区产出的三种主要类型的绿松石即结核状、脉状和假象绿松石进行了矿物化学、稀土元素地球化学研究，结合绿松石产出的地质背景，讨论了不同类型的绿松石矿石稀土元素富化和亏损的原因。

关键词：绿松石矿物化学稀土元素马鞍山

Cathodic behavior of scandium(Ⅲ) on reactive copper electrodes in LiF-CaF_(2)eutectic molten salt

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Journal of Rare Earths 2022年第10期40卷 1641-1650页

作者： Chunxin wang Jianshe Chen Binchuan Li Hang Zhao Binjun Jin kuiren Liu Qing Han Key Laboratory for Ecological Utilization of Multimetallic Mineral Ministry of EducationShenyang 110819China School of Metallurgy Northeastern UniversityShenyang 110819China

The electrochemical formation of Sc-Cu alloy was investigated in LiF-CaF_(2) eutectic molten salt employing various electrochemical *** voltammetry and square wave voltammetry indicate that the reduction of scandium(Ⅲ) on the tungsten electrode is a one-step reduction process with three electrons *** underpotential deposition of scandium on the copper electrode occurs owing to the depolarization effect,i.e.,forming Sc-Cu intermetallic *** thermodynamic properties of the Sc-Cu intermetallic compounds ScCu_(4),ScCu_(2),and ScCu in the temperature range of 1153-1223 K were estimated by open-circuit ***,the Sc-Cu alloys were prepared by potentiostatic electrolysis and characterized by optical microscope,X-ray diffraction,scanning electron microscopy,and energy dispersive *** results reveal that only Sc-Cu alloy composed of Cu-ScCu_(4) can be synthesized at low cathodic current density and above eutectic temperature.

关键词： Li F-CaF_(2)eutectic molten salt Electrochemical deposition Sc-Cu intermetallic compounds Reactive Cu electrode Thermodynamic properties Rare earths

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熔盐电脱氧法制取Ti机理的研究

稀有金属材料与工程 2011年第11期40卷 2014-2017页

作者：王斌刘奎仁陈建设东北大学辽宁沈阳110004

通过低电压电解实验和不同阴极电解对比实验,并结合循环伏安曲线研究了熔盐电脱氧法制取金属Ti过程中阴极的反应机理。结果表明,在没有金属Ca生成的情况下,TiO2阴极可以直接还原,生成低价钛氧化物。在正常电解的情况下,阴极进行的主要... 详细信息

通过低电压电解实验和不同阴极电解对比实验,并结合循环伏安曲线研究了熔盐电脱氧法制取金属Ti过程中阴极的反应机理。结果表明,在没有金属Ca生成的情况下,TiO2阴极可以直接还原,生成低价钛氧化物。在正常电解的情况下,阴极进行的主要电极反应是TiO2的直接电还原反应,同时在阴极也存在一定的钙热还原反应,只是反应强度比较弱。

关键词：钛二氧化钛电脱氧机理熔盐