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Acta Geologica Sinica(English Edition) 2024年第2期98卷 386-398页

作者： MENG Fanxue LU Jie ZOU Zongqi guo jingliang MENG Yuanku College of Earth Science and Engineering Shandong University of Science and TechnologyQingdaoShandong 266590China Guangzhou Institute of Geochemistry Chinese Academy of SciencesGuangzhou 510640China State Key Laboratory of Geological Processes and Mineral Resources School of Earth SciencesChina University of GeosciencesWuhan 430074China

Feldspar Pb isotopes have been widely used to trace magmatic formation and evolution ***,it remains unclear whether post-magmatic thermal events can affect feldspar Pb isotopic ***,the in situ Pb isotopic composition of feldspar hosted in granitic rocks(thirteen Archean and one Paleoproterozoic)from the northern Kongling terrane,Yangtze Craton,South China,is *** samples reveal a substantial variation in their Pb isotopic composition,spanning the gap between the 1.9 Ga and present-day geochrons,which indicates extensive resetting by later tectonothermal *** resetting was interpreted to have likely resulted from Paleoproterozoic and Neoproterozoic tectonothermal events related to the assembly and breakup of the Columbia and Rodinia *** results suggest that Pb isotopes should be used cautiously when tracing magma sources and petrogenesis in magmatic rocks that have experienced post-magmatic ***,the in situ Pb isotopic composition of feldspar in ancient granitoids may also potentially be used to reveal later tectonothermal *** extensive resetting of the Pb isotopic composition in feldspar by regional thermal events may also provide new insights into our understanding of the Pb isotope paradox.

关键词： in situ Pb isotope Pb isotope resetting thermal event Archean-Paleoproterozoic Kongling terrane

Decoupling of Lu-Hf and Sm-Nd Isotopic System in Deep-Seated Xenoliths from the Xuzhou-Suzhou Area,China: Differences in Element Mobility during Metamorphism

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Journal of Earth Science 2019年第6期30卷 1266-1279页

作者： Fanxue Meng Wenliang Xu Qinglin Xu jingliang guo Yu Zhang Shandong Key Laboratory of Depositional Mineralization and Sedimentary Minerals Shandong University of Science and Technology^Qingdao 266590China Laboratory for Marine Geology Qingdao National Laboratory for Marine Science and TechnologyQingdao 266061China College of Earth Sciences Jilin UniversityChangchun 130061China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China

This paper presents whole-rock Hf isotopic data for a suite of eclogite and garnet clinopyroxenite xenoliths hosted in the Early Cretaceous dioritic intrusions from the Xuzhou-Suzhou area along the southeastern margin of the Eastern Block of the North China Craton(NCC).Six of the eight studied xenolith samples plot significantly above the terrestrial Hf-Nd isotopic array and haveεHf(0)value up to+*** the samples define a well correlated 147 Sm/144 Nd-143 Nd/144 Nd age of 2081 Ma,which is considered to record the granulite-facies *** contrast,the Lu-Hf isotope system faithfully records the protolith *** mineralogical assemblage,especially garnet and/or zircon(rutile to some extent)mainly controlled the decoupling of Hf-Nd *** metamorphic modification on protolith characteristics and the differences in element mobility during metamorphism may also reinforce the observed decoupling between the Sm-Nd and Lu-Hf isotope systems;i.e.,the absence of the correlations inεNd-εHf and also 87 Sr/86 Sr-143 Nd/144 Nd *** Lu/Hf isochron age of 2424 Ma is similar to the zircon age peak of the studied xenoliths and the dominant age of NCC basement,indicating that the igneous protolith has an affinity to the Archean basement of the ***,the positiveεHf(t)values at 2500 Ma indicate a crustal growth event of 2500 Ma in the NCC.

关键词： lower-crust xenoliths Hf-Nd isotopes metamorphism modification crustal growth

Non-matrix-matched analysis of U-Th-Pb geochronology of bastn?site by laser ablation inductively coupled plasma mass spectrometry

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Science China Earth Sciences 2021年第4期64卷 667-676页

作者： Tao LUO He ZHAO Wen ZHANG jingliang guo Keqing ZONG Yongsheng LIU Junfeng ZHANG Zhaochu HU State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China

Bastn?site is widespread in alkali granite, carbonatite and REE ore deposits. The U-Th-Pb ages of bastn?site can constrain the mineralization age. Currently, the lack of suitable in situ analysis reference material is the major obstacle of bastn?site U-Th-Pb geochronology. In this study, the matrix effects of U-Pb and Th-Pb age determination in bastn?site using glass NIST 610 as the external calibration reference were evaluated with the 193-nm excimer LA-ICP-MS analysis in normal and additional gases laser ablation modes. The obtained U-Th-Pb ages of bastn?site were approximately 7–11% lower than their reference values in the normal analytical mode(without additional gas). Fortunately, the determined systematic age biases in UTh-Pb dating were significantly reduced(less than 1–2%) with the addition of water vapor within the ablation chamber. This reduction may be attributed to the observed significant suppression of206 Pb/238 U and208 Pb/232 Th downhole fractionation in both NIST 610 glass and bastn?site by introducing a small quantity of water vapor in the ablation chamber. In addition, the obtained206 Pb/238 U and208 Pb/232 Th ages of bastn?site K-9, LZ1384, and MAD809 showed great consistency with their corresponding recommended values. The obtained results show that accurate and precise U-Th-Pb ages of bastn?site can be simultaneously obtained by using glass NIST 610 as the primary calibration standard in 193-nm LA-ICP-MS with the water vapor-assisted method. This simple and effective water vapor-assisted non-matrix-matched laser ablation method helps to promote the geological application of bastn?site U-Th-Pb geochronology.

关键词： LA-ICP-MS U-Th-Pb ages Non-matrix-matched method Bastn?site

Provenance of Central Canyon in Qiongdongnan Basin as evidenced by detrital zircon U-Pb study of Upper Miocene sandstones

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Science China Earth Sciences 2015年第8期58卷 1337-1349,1-6页

作者： CHEN Hui XIE XiNong guo jingliang SU Ming ZONG KeQing SHANG Fei HUANG Wei WANG Wei SHANG ZhiLei Key Laboratory of Tectonics and Petroleum Resources of Ministry of Education Faculty of ResourcesChina University of Geosciences State Key Laboratory of Geological Processes and Mineral Resources China University of Geosciences Key Laboratory of Renewable Energy and Gas Hydrate Guangzhou Institute of Energy ConversionChinese Academy of Sciences China National Offshore Oil Corporation Research Institute

Deep-water canyon systems can provide important sandstone reservoirs for deep-water oil and gas exploration in the South China Sea;however,the sedimentary provenance of the Central Canyon in the Qiongdongnan Basin remains *** this work,detrital zircon grains from three drilling sandstones in the Upper Miocene Huangliu Formation in the western part of the Central Canyon were analysed by LA-ICP-MS for U-Pb ages,in order to constrain their *** hundred and ninety-one zircon grains yield concordant U-Pb ages ranging from 28.6 to 3285 *** of them show oscillatory or linear zoning in CL-images and high Th/U ratios(>0.1),suggesting that they are magmatic *** major age clusters at about30 Ma(N=6),220–270 Ma(N=29),and 420–440 Ma(N=13),and five minor age clusters at 70–110 Ma(N=7),150–170 Ma(N=4),800–850 Ma(N=11),1800–2000 Ma(N=16),and 2400–2600 Ma(N=7),can be identified in the age spectrum,which are very similar to those of the Upper Miocene sandstones and modern river sands in the Red River area,but different from those of other nearby regions(e.g.,Hainan Island,the Pearl River area,and the Mekong River area)in Southeast *** major age peak at about 30 Ma in our samples is consistent with the timing of tectonothermal events in the Red River Fault ***,we suggest that the provenance of the western part of the Central Canyon,in the Qiongdongnan Basin,was fed dominantly by the Paleo-Red River system during the Late Miocene.

关键词： Qiongdongnan Basin Central Canyon detrital zircon U-Pb dating LA-ICP-MS sedimentary provenance

Crustal Contamination of the Mantle-Derived Liuyuan Basalts:Implications for the Permian Evolution of the Southern Central Asian Orogenic Belt

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Journal of Earth Science 2022年第5期33卷 1081-1094页

作者： Yuanyang Yu Keqing Zong Yu Yuan Reiner Klemd Xin-Shui Wang jingliang guo Rong Xu Zhaochu Hu Yongsheng Liu State Key Laboratory of Geological Processes and Mineral Resources School of Earth SciencesChina University of GeosciencesWuhan 430074China GeoZentrum Nordbayern Universität Erlangen-NürnbergSchlossgarten 5aErlangenD-91054Germany State Key Laboratory of Ore Deposit Geochemistry Institute of GeochemistryChinese Academy of SciencesGuiyang550081China

The Permian basalts in the Central Asian Orogenic Belt(CAOB)are crucial for constraining the closure of the Paleo-Asian ***,the origin of these basalts is still under ***,we present comprehensive bulk-rock geochemical,Sr-Nd-Pb-Hf isotopic,and zircon U-Pb-Lu-Hf isotopic data of the Liuyuan basalts and coexisting gabbros,which are located in the Beishan Orogen in the southern CAOB,to constrain their emplacement setting and tectonic *** new gabbro ages of ca.288–294 Ma are interpreted to represent the formation time of the Liuyuan basaltic *** Liuyuan basalts show MORB-like rare earth element(REE)patterns and bulk-rockε_(Hf)(t)andε_(Nd)(t)values of 11.0–15.4 and 4.6–9.2,respectively,suggesting an origination mainly from a depleted mantle ***,positive Pb anomalies,Nb-Ta depletions,and high Th/Yb ratios as well as evolved Sr-Nd-Pb-Hf isotopic compositions of some samples indicate variable continental crustal *** to the covariation of Pb anomalies(Pb^(*)=2×Pb_(N)/(Ce_(N)+Pr_(N)))with Sr-Nd-Pb-Hf isotopic compositions,we speculate that parent magma of the Liuyuan basalt was contaminated by continental crustal materials during the eruption rather than having been generated from an enriched mantle *** revealed by mixing modelling,the Liuyuan basaltic magmas would require a minor(<10%)upper continental crustal assimilation to explain the enriched trace elemental and radiogenic Sr-Nd-Pb-Hf isotopic ***,the Liuyuan basaltic belt is believed to have been generated in a continental extensional environment instead of an oceanic setting and does not constitute a Permian ophiolitic suture zone as previously suggested,since the Paleo-Asian Ocean was already closed in the southern Beishan Orogen in the Early Permian.

关键词： crustal contamination Liuyuan basaltic belt Central Asian Orogenic Belt Beishan Orogen Pb anomaly tectonics

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拉萨地体东南部整体地壳成分及其成因分析

地球科学 2019年第6期44卷 1809-1821页

作者：郭京梁张宏飞徐旺春郭亮吴耀崔丹丹中国地质大学地球科学学院湖北武汉430074 中国地质大学地质过程与矿产资源国家实验室湖北武汉430074

造山带地壳结构和成分的基本特征对于认识大陆地壳成分演化和区域成矿背景具有重要意义.综合青藏高原拉萨地体东南部地球物理、高温高压岩石物性和岩浆岩地球化学资料,分析该地区地壳整体成分特征,并探讨其可能成因.该地区平均地壳波速... 详细信息

造山带地壳结构和成分的基本特征对于认识大陆地壳成分演化和区域成矿背景具有重要意义.综合青藏高原拉萨地体东南部地球物理、高温高压岩石物性和岩浆岩地球化学资料,分析该地区地壳整体成分特征,并探讨其可能成因.该地区平均地壳波速显著低于全球大陆和造山带地壳的平均值,表明地壳整体具有中酸性成分,下地壳特征也可由中性岩石(残余体性质的中性含石榴石麻粒岩)解释.拉萨地体东南部整体地壳成分特征应与多阶段长英质化有关,包括碰撞前大陆弧演化阶段(以堆晶或残余体下地壳拆沉为主)和碰撞后高原垮塌阶段(以加厚下地壳拆沉为主,伴随印度古老长英质陆壳物质的俯冲回返/构造底侵).拉萨地体是研究大陆地壳成分演化的绝佳区域,亟待进一步开展多学科综合研究.

关键词：大陆地壳成分演化拆沉 Nd 同位素冈底斯青藏高原岩石学

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生态矿区建设期环境成本与效益研究

当代化工研究 2019年第2期 4-5页

作者：郭晶亮山西兰花集团芦河煤业有限公司山西048000

随着我国经济的快速发展,生态矿区建设在国民经济中起着非常重要的作用。由于我国人口众多,资源有限,现可用资源越用越少,但环境污染近几年却愈发严重。在生态环境与可用资源越来越严峻的情形下,建设生态矿区、保护生态环境已经成为我... 详细信息

随着我国经济的快速发展,生态矿区建设在国民经济中起着非常重要的作用。由于我国人口众多,资源有限,现可用资源越用越少,但环境污染近几年却愈发严重。在生态环境与可用资源越来越严峻的情形下,建设生态矿区、保护生态环境已经成为我国煤矿企业今后的奋斗目标。建设生态矿区不是一朝一夕就可以实现的,我们要时刻以保护生态环境为宗旨,促进企业与环境协同发展。本文主要从生态矿区环境成本与环境效益的评价出发,然后分析生态矿区环境成本的控制方法,最后提出如何把生态文明贯穿矿山建设中的几点建议。

关键词：生态文明矿山建设

华北克拉通东部早白垩世火山岩:再循环物质差异性改造的记录

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地球科学 2024年第2期49卷 669-684页

作者：汪浪汤华云汪翔宗克清郭京梁程怀汪在聪中国地质大学地球科学学院地质过程与矿产资源国家重点实验室湖北武汉430074 广州海洋地质调查局三亚南海地质研究所海南三亚572025

华北克拉通东部在130~120 Ma早白垩世期间经历强烈改造,并伴随大规模岩浆活动.对比研究了这一时期山东鲁西地区、郯庐断裂带和胶东半岛玄武安山岩-安山岩等幔源岩石的地球化学特征和Sr-Nd同位素组成,探讨了各地区火山岩源区性质以及造... 详细信息

华北克拉通东部在130~120 Ma早白垩世期间经历强烈改造,并伴随大规模岩浆活动.对比研究了这一时期山东鲁西地区、郯庐断裂带和胶东半岛玄武安山岩-安山岩等幔源岩石的地球化学特征和Sr-Nd同位素组成,探讨了各地区火山岩源区性质以及造成源区不均一性的可能原因.这些火山岩均来自富集型地幔且受地壳组分的混染影响较小,并主要经历了单斜辉石、磷灰石和Ti-Fe氧化物的分离结晶,但相较于郯庐断裂带和胶东半岛而言,鲁西火山岩的演化程度更低.不同地区火山岩均具有岛弧型微量元素和富集的Sr-Nd同位素组成,其中,鲁西北部火山岩表现为(^(87)Sr/^(86)Sr)i0.706的Ⅱ型富集地幔特征,这暗示上述火山岩可能均来自被再循环地壳物质改造的富集地幔源区,且其源区富集程度具有从西北到东南逐渐增强的趋势.Sr-Nd同位素两端元混合模拟显示,鲁西北部火山岩EMⅠ型同位素特征可能与其地幔源区受华北下地壳物质的交代有关,而鲁西中-南部、郯庐断裂带和胶东地区火山岩EMⅡ型同位素特点则更可能是源区受三叠纪俯冲扬子陆壳组分改造的结果.古太平洋板块来源的俯冲流体交代和水化也对这些地区的富集岩石圈地幔有不同程度改造.因此,山东半岛不同地区早白垩世火山岩记录了不同性质壳源组分对华北克拉通东部岩石圈地幔的影响,这一差异性改造对华北东部岩石圈地幔的破坏和减薄有重要制约作用.

关键词：早白垩世中基性火山岩富集岩石圈地幔地幔交代华北克拉通地球化学

西藏冈底斯带始新世曲水岩基的岩浆混合作用:来自斜长石阴极发光特征和成分变化的证据

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地球科学 2019年第6期44卷 1834-1848页

作者：阮冰骆必继张宏飞郭亮徐旺春赵新福张文郭京梁中国地质大学地球科学学院湖北武汉430074 中国地质大学资源学院湖北武汉430074 中国地质大学地质过程与矿产资源国家重点实验室湖北武汉430074

斜长石作为主要造岩矿物,是研究岩石成因、示踪岩浆演化和岩浆混合过程的有效工具.对冈底斯带曲水岩基始新世花岗闪长岩、二长花岗岩、闪长岩脉和暗色包体中的斜长石进行了阴极发光图像结构特征、电子探针主量元素和LA-ICP-MS微量元素... 详细信息

斜长石作为主要造岩矿物,是研究岩石成因、示踪岩浆演化和岩浆混合过程的有效工具.对冈底斯带曲水岩基始新世花岗闪长岩、二长花岗岩、闪长岩脉和暗色包体中的斜长石进行了阴极发光图像结构特征、电子探针主量元素和LA-ICP-MS微量元素成分的分析,揭示了斜长石复杂环带的成因和相关的岩浆过程.该区斜长石的阴极发光图像呈现出多种颜色且与其An值相对应,随着An值降低依次为绿色、蓝色和暗灰色或暗红色等,并发育补丁状环带、筛状环带、韵律环带等.花岗闪长岩、二长花岗岩中斜长石的An值具有相似的变化范围(20~55),而闪长岩脉和暗色包体中An值的变化范围较大(25~85),表明曲水岩基经历了复杂的开放过程.微量元素结果表明:花岗闪长岩与闪长岩脉和暗色微粒包体具有相同的Sr含量范围(600×10^-6~1 100×10^-6);而二长花岗岩的Sr含量(1 000×10^-6~2 400×10^-6)整体高于前者.以上研究表明,花岗闪长岩中阴极发光呈现绿色的核部或幔部是偏中性岩浆注入寄主岩岩浆混合的结果;具有高Sr含量的二长花岗岩认为是高Sr含量的岩浆结晶形成的;闪长岩脉和暗色微粒包体中的筛状结构斜长石为寄主岩捕掳晶.

关键词：曲水岩基斜长石阴极发光环带岩浆演化岩浆混合岩石学

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福建红壤和砖红壤性红壤的地球化学特征

福建农学院学报 1989年第3期18卷 256-262页

作者：王果林景亮福建农学院土壤农化系

对福建省11个红壤和砖红壤性红壤剖面研究表明,发育于酸性母岩的土壤富硅,钾,贫铁、镁,锰,而发育于基性及超基性母岩的土壤则是富铁、镁、锰,贫硅、钾、铁、铝、钛在剖面中相对聚集,硅、钙、钠、磷相对迁移,其中钠、钙几乎被淋失殆尽.... 详细信息

对福建省11个红壤和砖红壤性红壤剖面研究表明,发育于酸性母岩的土壤富硅,钾,贫铁、镁,锰,而发育于基性及超基性母岩的土壤则是富铁、镁、锰,贫硅、钾、铁、铝、钛在剖面中相对聚集,硅、钙、钠、磷相对迁移,其中钠、钙几乎被淋失殆尽.钾、镁在大多数剖面中也是相对迁移的.地形条件与侵蚀—堆积过程的共同作用使位于坡地中、下部的土壤的盐基迁移程度较低.受古气候影响明显的剖面有异常的地球化学特征,显示出较高的脱硅富铝化程度,而其它剖面均处于中度脱硅富铝化阶段.

关键词：红壤砖红壤性红壤地球化学特征