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science China Earth sciences 2001年第S1期44卷 45-55页

作者：赖绍聪刘池阳 s.y.o’reilly Department of Geology Northwest University Xi’an China National Key Center of GEMoC Macquarie University Sydney Australia

Detailed studies indicate that the main rock type of the Neogene high-potassium calc-alkaline volcanic rock association from north Qiangtang is andesite, dacite and rhyolite. They belong to typical crust-generation magmatic system and originate from the special thickened crust of the Tibetan Plateau by dehydration melting. This group of rocks exhibits LREE enrichment but no remarkable Eu anomaly that shows their source region should be a thickened deep crust consisting of eclogitic mass group, implying that the crust had been thickened and an eclogitic deep crust had been formed during the Neogene period in Qiangtang area. This understanding is important and significant to making further discussion on the uplift mechanism and continental dynamics of the Tibetan Plateau.

关键词： : Neogene volcanism petrology and geochemistry magma source region feature deep crust composition north Qiangtang.

Trace-element of Tuoyun cli-nopyroxene:Implication for the deep processes of litho-spheric mantle beneath the southwest Tianshan,West China

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Chinese science Bulletin 2001年第14期46卷 1206-1211页

作者： ZHENG Jianping LU Fengxiang s.y.o’reilly LUo Zhaohua Faculty of Earth sciences China University of GeosciencesWuhan 430074China Department of Earth and Planetary sciences Macquarie UniversitySydneyNSW2109Australia Faculty of Earth sciences China University of GeosciencesBeijing 100083China

Based on the LAM-ICPMs analytic results on the trace elements of clinopyroxenes in peridotitic xenoliths occurring in early-Cretaceous basalts from western Xinjiang, the properties and the deep processes, including partial melting and mantle metasomatism, of the subcontinental lithospheric mantle beneath the Tuoyun Basin are analyzed. In the northern edge of the Tarim Basin (southwest Tian-shan), the Mesozoic subcontinental lithosphere which has experienced the effect of partial melting (somatism is characterized by Phanerozoic ’ocean-type’ mantle. The superposed influence of sio2-un-saturated silicate melt and carbonate melt probably results in the metasomatic medium which resembles the hydrous silicated carbonate melt in some aspects. By comparing Tuoyun mantle with Cenozoic main mantle beneath eastern China, the properties are similar, while the former shows finer grain and higher diopside content of the peridotites and more conspicuous modal metasomatism.

关键词： west China mantle clinopyroxene LAM-ICPMs mantle heterogeneity deep process.

single zircon LAM-ICPMs U-Pb dating of Guidong complex(sE China)and its petrogenetic significance

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Chinese science Bulletin 2003年第17期48卷 1892-1899页

作者： XUXishenq DENGPing s.y.o'reilly W.L.Griffin ZHoUXinmin TANZhengzhong stateKeyLaboratoryforMineralDepositsResearch DepartmentofEarthSciencesNanjingUniversityNanjing210093China ResearchInstituteNo.290 SouthChinaBureauofGeologyCNNEShaoguan512026China ARCNationalKeyCentreforthe-GeochemicalEvolutionandMetal-logenyofContinents MacquarieUniversityNSW2109Australia

single zircon LAM-ICPMs U-Pb dating indi-cates that the Guidong granitic complex is a multistage ba-tholith formed during Indosinian-yanshanian time. The Luxi body (239 ± 5 Ma) and the Xiazhuang body (235.8 ± 7.6 Ma) intruded during Indosinian time, whereas the Aizi body (160.1 ± 6.1 Ma) and the siqian body (151 ± 11 Ma) formed during yanshanian time. Inherited zircons (1275—2137 Ma) in the Xiazhuang body imply that at least part of the source rocks of the Guidong complex are from the Proterozoic basement of southeast China. Detailed single zirconLAM-ICPMs U-Pb dating results provide important evi-dence for understanding the evolution, tectonic setting andmineralisation of the complex.

关键词：中国东南部成岩作用锆石 U-Pb测年电感耦合等离子体质谱法花岗岩

Trace Element Composition of Clinopyroxene From Mantlederived Peridotite Xenoliths

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Chinese science Bulletin 1993年第14期38卷 1186-1189页

作者：陈道公 s.y.o'reilly W.L.Griffin University of science and Technology of China Hefei 230026 PRC school of Earth sciences Macquarie Univeristy NSW 2109 Australia Division of Exploration Geoscience CSIRO North Ryde 2113 Australia

Knowledge of the trace element distributions and concentrations in main mineral phases of mantle-derived rocks is particularly useful for understanding the partial melting, depletion and enrichment processes, and metasomatism in the earth’s mantle. Trace element data on mantle peridotites were usually obtained with large uncertainty by neutron activation analysis in China previously. We have determined trace element concentration of 173 grains of clinopyroxene (cpx) in 50 peridotite xenoliths from different areas in China using the pro-

关键词： trace element clinopyroxene mantle.

Determination of Calcium in olivine by Proton Microprobe and Its Implication

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Chinese science Bulletin 1993年第5期38卷 396-399页

作者：陈道公 s.y.o'reilly W.L.Griffin University of science and Technology of China Hefei 230026 PRC school of Earth science Macquarie University NSW 2109 Australia. Division of Exploration Geosciences CSIRO North Ryde NSW 2113 Australia.

Ca is a minor component of olivine (oliv). Its concentration measured by electron microprobe (EMP) is about 0.1—0.5%, which is close to the minimum detection limit. As Ca distribution between oliv and clinopyroxene (cpx)has the possibility of being used as geothermobarometers, it is very important to measure accurately the Ca content in oliv. Proton-induced X-ray emission (PIXE) technique as a new high energy analysis method shows advantage in high sensitivity and accuracy of microanalyses and begins to be

关键词： calcium olivine proton microprobe mantle.

U-Pb dating of zircons from quartz diorite and its enclaves at Tongguanshan in Anhui and its petrogenetic implication

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Chinese science Bulletin 2004年第19期49卷 2073-2082页

作者： XUXisheng FANQincheng s.y.o'reilly JIANGshaoyong W.L.Griffin WANGRucheng QIUJiansheng stateKeyLaboratoryforMineralDepositsResearch.DepartmentofEarthsciences NanjingUniversity.Nanjing210093.China ARCNationalKeyCentrefortheGeochemicalEvolutionandMetallogenyofContinents MacquarieUniversity.NSW2109Australia

The genesis of intermediate-silicic intrusive rocks and their enclaves in Tongling are closely related to Fe, Cu mineralization, which may provide petrologic informa- tion on lithospheric dynamics in this region. Tongguanshan quartz diorite and its enclaves, representatives of the Meso- zoic intermediate-silicic intrusive rocks in the Tongling area, were studied using approaches of petrography, electron microprobe mineral chemistry and the LA-ICPMs zircon U-Pb dating. The chemical compositions of pyroxene and amphibole in pyroxene-amphibole cumulate, quartz-diorite host rock from Tongguanshan show correlative variations. The Al contents of the minerals in pyroxene-amphibole cu- mulate are higher than those in the host rocks, indicating that the cumulate crystals were crystallized before the em- placement of host magma. The consistent mineral chemical compositions between the Tongguanshan quartz diorite and the microgranular diorite enclave indicate that the enclave and host rock were crystallized under similar conditions and therefore are closely genetically related. The LA-ICPMs zircon U-Pb dating suggests that the crystallization age of Tongguanshan quartz diorite is 137.5±1.1 Ma, consistent with the previous dates by different methods. However, the present U-Pb dating also revealed the presence of late- Archean relict cores, demonstrating that older lower crustal materials were involved in the generation of Mesozoic mag- matic rocks in this area. Furthermore, the dating results show that the crystallization age of the microgranular diorite enclave is 137.5 ±2.4 Ma, the same as the crystallization age of the host magma. By integrating the previous sr-Nd-Pb isotope data, it is also discussed the petrogenesis of quartz diorite and its enclaves in Tongguanshan.

关键词： U-Pb年代测定法锆石石英闪长岩安徽岩石成因微晶粒状

北羌塘新第三纪高钾钙碱火山岩系的成因及其大陆动力学意义

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中国科学（D辑） 2001年第B12期31卷 34-42页

作者：赖绍聪刘池阳 s.y.o’reilly 西北大学地质系西安710069 National Key Centre of GEMoC Macquarie UniversitySydney 2109Australia

北羌塘新第三纪高钾钙碱系列火山岩主要岩石类型为安山岩、英安岩和流纹岩类,属典型的壳源岩浆系列,是加厚的陆壳基底脱水熔融的产物.岩石具轻稀土富集和无负Eu异常的特殊地球化学特征,表明其源区物质组成相当于榴辉岩相,从而揭示了羌... 详细信息

北羌塘新第三纪高钾钙碱系列火山岩主要岩石类型为安山岩、英安岩和流纹岩类,属典型的壳源岩浆系列,是加厚的陆壳基底脱水熔融的产物.岩石具轻稀土富集和无负Eu异常的特殊地球化学特征,表明其源区物质组成相当于榴辉岩相,从而揭示了羌塘地区在新第三纪板块碰撞这一特定的构造背景下,陆壳已经被加厚并形成了一个榴辉岩质的下地壳类型.

关键词：新生代火山作用岩石地球化学高钾钙碱岩系源区性质下地壳组成北羌塘火山岩

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粤西白垩纪火山-侵入岩浆活动及其地质意义

中国科学（D辑） 2006年第7期36卷 601-617页

作者：耿红燕徐夕生 s.y.o’reilly 赵明孙涛南京大学内生金属矿床成矿机制研究国家重点实验室地球科学系南京210093 GEMoC National Key Centre Department of Earthand Planetary SciencesMacquarie UniversitySydneyNSW 2109Australia

系统的锆石激光探针ICP-Ms U-Pb同位素定年揭示，粤西地区存在白垩纪（约100Ma）的火山-侵入岩浆活动．代表性火山岩有马鞍山流纹英安岩和周公顶流纹英安岩，其锆石U-Pb同位素年龄为（100±1）Ma；侵入岩包括诗洞杂岩体中的德庆二长花... 详细信息

系统的锆石激光探针ICP-Ms U-Pb同位素定年揭示，粤西地区存在白垩纪（约100Ma）的火山-侵入岩浆活动．代表性火山岩有马鞍山流纹英安岩和周公顶流纹英安岩，其锆石U-Pb同位素年龄为（100±1）Ma；侵入岩包括诗洞杂岩体中的德庆二长花岗岩岩体（99±2Ma）、杏花花岗闪长岩岩体（100Ma左右）以及广平杂岩体中的调村花岗闪长岩岩体（104±3Ma）．诗洞杂岩体主体（461±35Ma）和广平杂岩体主体（444±6Ma）是加里东期黑云母花岗岩．尽管白垩纪火山-侵入岩与加里东期侵入岩形成时代间隔很大，但它们均具Rb，Th，Ce，Zr，Hf,sm富集而Ba，Nb，Ta，P，Ti亏损的微量元素地球化学特征，它们的稀土元素组成均表现为很弱的四分组效应，其Eu亏损程度依次为：白垩纪火山岩（Eu／Eu^＊=0．74）、白垩纪侵入岩（Eu／Eu^＊=0．35～0．58）、加里东期黑云母花岗岩（Eu／Eu^＊=0．31～0．34）．sr-Nd同位素研究表明，上述火成岩具高（^87sr／^86sr）i值（0．7105～0．7518）、低εNd（f）值（-7．23- -11．39）的特点，两阶段Nd模式年龄值（T2DM）为1．6～2．0Ga，表明它们起源于元古代地壳基底．粤西地区的白垩纪火山-侵入岩浆活动，与包括南岭在内的中国东南部广大地区在100Ma时发生的一次重要的岩石圈拉张事件有关．华南中生代大规模中酸性火山岩浆作用形成的“火山岩线”可南延至南岭西南缘．

关键词：白垩纪火山-侵入岩锆石U-Pb定年 sr-Nd同位素粤西

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质子微探针测定橄榄石中钙及其意义

科学通报 1992年第16期37卷 1492-1494页

作者：陈道公 s.y.o'reilly W.L.Griffin 中国科学技术大学合肥230026 澳大利亚Macquarie大学地学院澳大利亚联邦科学工业研究组织勘探地球科学分部

钙是橄榄石的次要组分,电子探针分析值一般在0.1—0.5％,已处于检出限附近,有较大误差。由于钙在橄榄石和单斜辉石中的分配有作为地质温压计的潜在可能性,因此橄榄石中钙的准确含鼍测定显得尤为必要。质子诱发X射线发射(PIXE,简称质子探... 详细信息

钙是橄榄石的次要组分,电子探针分析值一般在0.1—0.5％,已处于检出限附近,有较大误差。由于钙在橄榄石和单斜辉石中的分配有作为地质温压计的潜在可能性,因此橄榄石中钙的准确含鼍测定显得尤为必要。质子诱发X射线发射(PIXE,简称质子探针)分析作为一种新的高能分析方法,由于其可实现高灵敏度、高精度及微区微粒分析,已开始逐渐在地学领域中应用。本文报道中国六合。

关键词：橄榄石钙质子微探针

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幔源橄榄岩包体中单斜辉石的微量元素组成

科学通报 1992年第24期37卷 2255-2258页

作者：陈道公 s.y.o'reilly W.L.Griffin 中国科学技术大学合肥230026 澳大利亚Macquarie大学地学院澳大利亚联邦科学工业研究组织勘探地球科学分部

了解地幔岩石中主要矿物相的微量元素分布、丰度状况对理解部分熔融、地幔的富集和亏损以及地幔交代作用等有重要意义。以往地幔样品的微量元素多由仪器中子活化分析所得,质量不高。我们采用高精度微区微粒的质子微探针(PIXE)技术对中... 详细信息

了解地幔岩石中主要矿物相的微量元素分布、丰度状况对理解部分熔融、地幔的富集和亏损以及地幔交代作用等有重要意义。以往地幔样品的微量元素多由仪器中子活化分析所得,质量不高。我们采用高精度微区微粒的质子微探针(PIXE)技术对中国不同地区50个橄榄岩包体中173个单斜辉石颗粒进行了微量元素定量测定,共获得10种微量元素和5种主要元素含量,本文对其总体情况作一扼要介绍,实测数据及模式处理等将另行报道。

关键词：微量元素单斜辉石地幔橄榄岩