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Fluid evolution and exhumation history of ultrahigh-pressure rocks at Lanshantou,Sulu terrane,Eastern China

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Fluid evolution and exhumation history of ultrahigh-pressure...

中国科学院地质与地球物理研究所2003学术年会

作者： m.satir Institute of mineralogy Petrology and GeochemistryUniversity of Tübingen Shandong Institute of Geological Sciences

Fluid inclusions in coesite-bearing eclogites and eclogite-facies quartz veins at Lanshantou in the Sulu ultrahigh-pressure metamorphic(UHPm)terrane,Eastern China,have preserved remnants of peak metamorphic and exhumation *** types of fluids have been distinguished:(1)mixed HO-CO[N2 fluid,(2)hypersaline aqueous fluid and(3)low salinity HO *** HO-CO]N fluids were introduced during or just after peak *** hypersaline fluids might be products of dehydration melting during early stage of *** salinity HO inclusions can be related to the latest evolutionary stage of the high-pressure veins during exhumation.

关键词： Fluid inclusion Eclogite Evolution Sulu UHPm terrane

Late-Variscan magmatism revisited:new implications from Pb-evaporation zircon ages on the emplacement of redwitzites and granites in NE Bavaria

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Late-Variscan magmatism revisited:new implications from Pb-e...

中国科学院地质与地球物理研究所2003学术年会

作者： W.Siebel m.satir Institut für Geowissenschaften Wilhelmstraβe 5672074 TübingenGermany

Pb-evaporation zircon analyses coupled with a detailed cathodoluminescence(CL) study on the complete series of granitoids from the northern Oberpfalz, NE Bavaria,provide new evidence for the commencement and timing of late-Variscan *** granitoids analysed in this study were dated before by Rb-Sr and/or K-Ar *** samples comprise medium-grained,I-type dioritic rocks(redwitzites),I/S-type granites(***(G1),Zain-hammer) and S-type granites(Falkenberg,Liebenstein, mitterteich,Friedenfels,Steinwald,Flossenbürg, B(a|¨)rnau).The zircon evaporation technique reveals three groups of Pb/Pb ages which are interpreted to represent magmatic crystallisation:(1) ages of 324- 321 ma are found in all analysed redwitzites and in almost all I/S-type granites;(2) the granites of Falkenberg and Liebenstein yield ages of～315 ma;(3) ages between 312 and 310 ma are recorded in the mitterteich,Friedenfels, Steinwald and Flossenbiirg *** crystals from different redwitzite bodies yield conventional U-Pb ages of 325-322 ma,identical to the Pb-evaporation zircon data of these *** S-type granites of groups 2 and 3 contain zircons with relict cores but only a small number of them yield older ages,indicating that some of the cores must have lost their radiogenic Pb. From the geochronological data,we infer that metamorphic conditions of the Variscan crust produced different granite types at different *** data support a model involving an early period of mantle-related magmatism which postdates the final convergence stage of the Variscan *** magmatic activity was at the same time as the thermal peak of regional metamorphism and is followed by a late period of crustal anatexis,which is probably related to post-collisional extension of the thickened Variscan crust.

关键词： Bohemian massif Geochronology Granite Pb-evaporation Titanite Variscan orogen Zircon

Geochemical and isotopic composition and inherited zircon ages as evidence for lower crustal origin of two Variscan S-type granites in the NW Bohemian massif

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Geochemical and isotopic composition and inherited zircon ag...

中国科学院地质与地球物理研究所2003学术年会

作者： W.Siebel m.satir Institut für Geowissenschaften Universitt TübingenWilhelmstraβe 5672074 TübingenGermany

Geochemical and Nd-Sr isotopic compositions and U-Pb zircon ages of two Variscan granites(Neunburg and Oberviechtach) from southern Oberpfalz,NW Bohemian massif,have been investigated in order to place constraints on their formation and on the crustal reworking. Both granites exhibit similar mineralogical,chemical and isotopic *** have peraluminous compositions(A/CNK ratios 1.2-1.3) and display high K

关键词： moldanubian Nd-Sr isotopes S-type granite Variscan Zircon age

矿物反应与氧同位素平衡——方解石-橄榄石体系的实验研究

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科学通报 1994年第13期39卷 1215-1217页

作者：郑永飞 P.metz m.satir 中国科学技术大学地球和空间科学系合肥230026 德国图宾根大学矿物岩石地球化学研究所

利用矿物反应方法确定产物之间的稳定同位素分馏系数尚不多见.已知的例子是通过氧化铁橄榄石形成石英和磁铁矿,从而直接得到这两个产物矿物之间的氧同位素分馏.这个实验的结果已被后来的同位素交换反应实验数据所证实.本文报道利用白云... 详细信息

利用矿物反应方法确定产物之间的稳定同位素分馏系数尚不多见.已知的例子是通过氧化铁橄榄石形成石英和磁铁矿,从而直接得到这两个产物矿物之间的氧同位素分馏.这个实验的结果已被后来的同位素交换反应实验数据所证实.本文报道利用白云石同透门石在680℃和5kb条件下的反应形成方解石和镁橄榄石所得到的氧同位素分馏结果.

关键词：矿物反应氧同位素方解石橄榄石

方解石-橄榄石-流体三相体系氧同位素交换的实验研究

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地球化学 1999年第5期28卷 411-420页

作者：郑永飞 m.satir P.metz Z.D.Sharp 中国科学技术大学地球和空间科学系合肥230026 Institute for mineralogy Petrology and GeochemistryUniversity of Tuebingen Institute for mineralogy and Petrography University of Lausanne

在６８０ ℃和５００ＭＰａ以及岩石学相平衡条件下，首次对方解石与镁橄榄石之间在大量超临界ＣＯ２Ｈ２Ｏ流体存在的条件下进行了氧同位素交换实验。结果发现，在实验刚刚开始的一段时间内氧同位素交换很快，主要是以溶解／ ... 详细信息

在６８０ ℃和５００ＭＰａ以及岩石学相平衡条件下，首次对方解石与镁橄榄石之间在大量超临界ＣＯ２Ｈ２Ｏ流体存在的条件下进行了氧同位素交换实验。结果发现，在实验刚刚开始的一段时间内氧同位素交换很快，主要是以溶解／重结晶的机制进行的；而在以后的时间里氧同位素交换要慢得多，变成以扩散机制为主。进一步，反应产物方解石相对于镁橄榄石亏损１８Ｏ，指示方解石的溶解／重结晶速率大于镁橄榄石。流体相的存在导致具不同溶解／重结晶速率的矿物与流体之间的氧同位素交换速率不同，结果使矿物矿物或矿物流体体系的氧同位素分馏在实验过程中不是单向地朝着平衡值方向移动，而是简单地超越平衡值，甚至出现“倒转”现象。只是当体系达到化学平衡后，溶解／重结晶作用显著减慢或停止，扩散作用才成为驱动体系朝向同位素平衡的主要机制。这时，方解石中氧的扩散速率等于或略大于镁橄榄石。因此，在应用实验测定的矿物氧扩散速率计算水岩反应的时间尺度时，必须首先排除溶解／重结晶和矿物蚀变引起的同位素交换。

关键词：实验研究化学动力学氧同位素交换方解石橄榄石流体

mineral Reaction and Oxygen Isotope Equilibrium——An Experimental Study on the Calcite-Forsterite System

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Chinese Science Bulletin 1994年第16期39卷 1382-1385页

作者：郑永飞 P. metz m. satir Department of Earth and Space Sciences University of Science and Technology of China Hefei 230026 PRC Institute for mineralogy Petrology and Geochemistry University of Tubingen Wilhelmstrasse 56D-72074 Tubingen Germany

There are few mineral reaction experiments dealing with the stable isotope fractionation factors between the reaction products. The only known example is to determine oxygen isotope fractionations between quartz and magnetite at 600 and 800℃ by oxidizing fayalite to form quartz and magnetite. This experimental result has been confirmed by the experiments of isotope exchange reaction. In this note, we report the results of an investigation of oxygen isotope fractionation between calcite

关键词： mineral reaction equilibrium fractionation oxygen isotopes calcite forsterite.

沙特阿拉伯动物传染性皮肤利什曼病的临床和病理学特征

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世界核心医学期刊文摘（皮肤病学分册） 2006年第1期2卷 15-16页

作者： Uthman m.A.E satir A.A Tabbara K.S 刘芯 College of medicine and medical Sciences Arabian Gulf University PO Box 22979 Manama Bahrain

Background: Zoonotic cutaneous leishmaniasis (ZCL) caused by Leishmania major is a growing public health problem and endemic in many parts of the Kingdom of S audi Arabia. The vector is Phlebotomus papatasi and the animal reservoirs are ma inly desert rodents. methods: In this prospective study, the clinical and histop athological features of ZCL in 120 patients are described and classified. The ma jority of these patients (n =84) were non-Saudi expatriate workers who suffered mostly from multiple and severely inflamed nodulo-ulcerative lesions on the ex posed parts of the body. Saudi patients were mainly children (n=21) with few1-3 lesions on their limbs or sometimes unique erysipeloid facial lesions. Results: Histopathological grouping of ZCL lesions showed four types of granulomatous re actions based on the predominant types of inflammatory cells, presence or absenc e of necrosis and ranking of parasitic index. Conclusion: A possible correlation between histopathologic evolution of ZCL lesions and the immune status of the h ost is discussed.

关键词：皮肤利什曼病病理学分类动物宿主巴浦白蛉地方性疾病伯裔类丹毒公共卫生肉芽肿性组织病理