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1∶2.万林芝县幅地质调查成果与进展

沉积与特提斯地质 2005年第1期25卷 111-114页

作者： No.3 party of geology and {2. resources, Yunnan institute of geological survey(No.3 party of geology and {2. resources, Yunnan institute of geological survey, Dali 671000, Yunnan, China) 云南省地质调查院第三地质矿产调查所云南大理671000

首次在工布江达县巴母果蒙拉组中发现遗迹化石及古孢粉,将该区无化石依据的“旁多群”解体;在朗县混杂岩的灰岩块体中发现重结晶的珊瑚、腕足类残片及牙形刺;将冈底斯岩浆弧划分为南部雅鲁藏布江复式岩基带和北部冈底斯主脊复式岩基带;... 详细信息

首次在工布江达县巴母果蒙拉组中发现遗迹化石及古孢粉,将该区无化石依据的“旁多群”解体;在朗县混杂岩的灰岩块体中发现重结晶的珊瑚、腕足类残片及牙形刺;将冈底斯岩浆弧划分为南部雅鲁藏布江复式岩基带和北部冈底斯主脊复式岩基带;在米林巴嘎一带南迦巴瓦岩群中发现石榴透辉岩、含云透辉榴闪岩扁豆状残留包体;首次在念青唐古拉岩群八拉岩组中发现一套高角闪岩相—麻粒岩相的变质岩系。

关键词： 1:2.万地质调查林芝幅成果与进展西藏

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粤、湘、鄂早石炭世含有孔虫地层及其对比

微体古生物学报 1986年第4期 387-398页

作者：林甲兴施国润宜昌地质矿产研究所湖北省地质局第七地质队常州市博物馆

粤、湘、鄂地区早石炭世地层,根据有孔虫组合总貌以及含有孔虫地层的沉积特征,可以江南古陆为界分为两大区。江南古陆以南包括湘中、湘南及广东诸地区,含有孔虫地层较发育,各阶段有孔虫组合特征比较明显,属种丰富。在这个地区的大部,整... 详细信息

粤、湘、鄂地区早石炭世地层,根据有孔虫组合总貌以及含有孔虫地层的沉积特征,可以江南古陆为界分为两大区。江南古陆以南包括湘中、湘南及广东诸地区,含有孔虫地层较发育,各阶段有孔虫组合特征比较明显,属种丰富。在这个地区的大部,整个下石炭统除岩关阶邵东组以及大塘阶测水组以碎屑岩沉积为主,仅在少数地点发现有孔虫外,其余各地层单位中几乎大都含丰富的有孔虫。江南古陆以北的鄂西地区,下石炭统地层层序、沉积特征与苏、皖地区雷同,生物群特征也极为相似。在这一地区,有孔

关键词：地层时代邵东组灰岩子组梓门桥组金陵组有孔虫早石炭世下石炭世石炭纪

Middle Devonian ostracods from Jiwozhai patch reef(Dushan,Guizhou Province,south China):Biostratigraphic and palaeoecological implication

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Journal of Palaeogeography 2024年第3期13卷 581-593页

作者： Jun-Jun Song Jia-Yuan Huang Wen guo Kun Liang Yu-Cong Sun Zhi-Hong Wang Wen-Kun Qie State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and PalaeontologyChinese Academy of SciencesNanjing 210008Jiangsu ProvinceChina Hubei Key Laboratory of Paleontology and geological Environment Evolution Wuhan Center of China Geological SurveyWuhan 430205Hubei ProvinceChina University of chinese academy of {2. NanjingNanjing 211135Jiangsu ProvinceChina

The Middle Devonian ostracods from the Jiwozhai patch reef in Dushan, Guizhou Province, south China were described for the first time in this study. Twenty-nine species belonging to 2. genera were identified and figured, including a new species named Wangshangkia jiwozhaiensis sp. nov. The ostracod fauna in the Jiwozhai patch reef represents a Givetian age. The ostracod assemblage belongs to the smooth-podocopid association, which is also ecologically equivalent to the Eifelian Mega-Assemblage Ⅲ. This association is indicative of shallow open-marine environments. The Jiwozhai patch reef fauna is primarily comprised of suspension feeders, including filter-feeding ostracods, corals, brachiopods and bryozoans. Ostracods from the Jiwozhai patch reef were compared to the ostracod faunas from Laurentia-Baltica at generic level, which reveals limited faunal exchanges between south China and Laurentia-Baltica during the Middle Devonian.

关键词： Ostracods Givetian Jiwozhai patch reef Dushan Palaeoecology

Effect of regional land subsidence on engineering structures:a case study of the 6 km long Su-tong Yantze River Bridge

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Effect of regional land subsidence on engineering structures...

LA-ICP-MS zircon U-Pb dating of tuffites in the Sachakou Pb-Zn mining area, Karakorum, Xinjiang and its establishment of Early Triassic strata

中国科学院地质与地球物理研究所第11届（2.11年度）学术年会

作者： F.S.Ma·Y.S.Yang·R.M.Yuan·B.K.Yao J.guo Key Laboratory of Engineering Geomechanics,institute of {2. and Geophysics,chinese academy of sciences, Beijing 10002.,People’s Republic of China College of Environment and resources,Jilin University, Changchun 13002.,People’s Republic of China School of Earth Ocean and Planetary sciences, Cardiff University,Cardiff CF10 3YE,UK National Center for Active Fault studies,institute of {2., China Earthquake Administration,Beijing 10002., People’s Republic of China institute of geological {12. of Jiangsu Province, Nanjing 2.0018,People’s Republic of China

The article reports a study of the influence of regional land subsidence on the 6.05 km long Su-tong Yangtze River *** characteristics of the major compressive geological layers and their potential to settlement are discussed in the light of the past and continuing groundwater exploitation in the area.A numerical model for land subsidence quantification was developed and used to predict the differential settlements along the bridge axis to *** is a significant difference in the settlement occurring in the north and south areas of the bridge,in part due to the variation in the Quaternary alluvial sediments. The case study highlights the importance of considering both site specific and regional subsidence conditions when designing large structures in such an area.

关键词： Land subsidence Environmental risk Overexploitation Highway bridge Su-Xi-Chang area

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China geology 2024年第1期7卷 150-152页

作者： Xiao-jian Zhao Nuo Li Kai Weng Ming Wang Qing-lin Sui Deng-hui Chen Zhou-ping guo Meng-qi Jin Xi’an Center China Geological SurveyMinistry of Natural ResourcesXi’an 710054China Xinjiang Research Center for mineral resources Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China College of Geography and Remote Sensing sciences Xinjiang UniversityUrumqi 830046China University of chinese academy of {2. Beijing 100029China No.8 geological party Xinjiang Bureau of Geology and Mineral Exploration and DevelopmentAksu 843000China School of Resource&Environment and Safety Engineering University of South ChinaHengyang 421001China

*** In the past decade,a group of medium to giant lead-zinc deposits,represented by Huoshaoyun,Sachakou,and Yuanbaoling,have been discovered in the Aksai Chin region of Karakoram,*** are all located in the Mesozoic carbonate and clastic rock *** Sachakou leadzinc mining area is adjacent to the northwest of the Huoshaoyun lead-zinc mining area and is in the same stratigraphic layer as *** many scholars have been arguing about the type and age of Huoshaoyun lead-zinc mineralization,few scholars have paid attention to the classification of the ore-bearing strata in the *** stratigraphy of the Lower Permian Shenxianwan Group to the Upper Cretaceous Tielongtan Group is exposed in the Sachakou area of Karakorum,Xinjiang,however,the Late Permian-Early Triassic stratigraphy is missing(Fig.1a).Due to the harsh natural conditions in the area and the low level of work,the stratigraphic delineation is not exhaustive,and the regional lithology is dominated by carbonates and clastic rocks,which makes it difficult to identify the age of the regional lithology and causes problems for the exploration and research of lead-zinc in the area.

关键词： strata Triassic Xinjiang

Analysis of the Spatio-Temporal Characteristics of Winter Surface Urban Heat Island:A Case Study in Beijing,China

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Journal of Earth Science 2024年第5期35卷 1640-1653页

作者： Shanshan Lu Fujiang Liu Yunshuang Ye Jiayu Tang Peng Li Weihua Lin Yan guo Ruqiang Ma Jun Wang School of Geography and Information Engineering China University of GeosciencesWuhan 430074China AutoNavi Software Co. Ltd.Beijing 100102China School of Computer Science China University of GeosciencesWuhan 430078China Yantai geological survey of Coastal {2. Center Yantai 264000China

This study reveals the temporal and spatial evolution characteristics of the winter nighttime urban heat island(UHI)effect in the case of Beijing,*** land surface temperature(LST)is retrieved by radiative transfer equation by using the remote sensing data from Landsat ETM+/OLI_TIRS from 2.07 to 2.17 for the winter nighttime period,and LST is then divided by the mean-standard deviation method into different levels of thermal landscapes.A combination of the migration calculation of gravity center and multi-directional profile analysis is used to study the directional differentiation characteristics of LST and the migratory characteristics of the gravity center of ***,the overall temporal and spatial evolution characteristics of winter nighttime surface urban heat island(SUHI)in Beijing are studied,and the possible reasons for the changes are *** show that Beijing's UHI effect first increased and subsequently decreased from 2.07 to *** winter heat island in the urban area developed from low-density agglomeration to high-density agglomeration to lowdensity ***,the high-level thermal landscapes migrated to the southwest along with the city center of gravity,and the expansion rate is fastest in the southwest,which is directly linked to the changes in the urban construction ***,the overall spatial distribution of winter nighttime LST is high in the east and south and low in the west and north,and is influenced by topography,land cover,urbanization,anthropogenic heat,and other factors as well.

关键词： land surface temperature urban heat island spatio-temporal characteristics winter environmentgeology

Robust Timing Constraints for Granitic Magmatism and Hydrothermal mineralization in the Tieshanlong W-Sn Ore Field, Eastern Nanling Range, south China

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Acta Geologica Sinica(English Edition) 2024年第5期 1255-1269页

作者： LI Wei TANG Juxing guo Na LANG Xinghai SONG Shiwei WU Zhongru PENG Linlin FANG Xiang CHEN Binfeng LIAN Dunmei LU Jie The Seventh geological Brigade of jiangxi {2. of geology Key Laboratory of Ionic Rare Earth Resources and Environment College of Earth and Planetary sciences Chengdu University of Technology jiangxi Province Key Laboratory of Exploration and Development of Critical mineral {2. MNR Key Laboratory of Metallogeny and mineral Resource Assessment Institute of Mineral ResourcesCAGS institute of Earth sciences China University of Geosciences jiangxi geological {2. chinese academy of {2. sciences

The Tieshanlong ore field is an important part of the Nanling Range, which is famous worldwide for its W-Sn mineralization. Notably, the mineralization age of the Tieshanlong ore field is not well constrained, and our field investigation reveals that granitic emplacement occurred at different stages. However, previous studies have not distinguished these multiple stages of magmatism. The Tieshanlong granite complex is closely related to the Huangsha quartz vein-type W-Sn deposit and Tongling skarn-type Cu-W-Sn deposit in this field. Through field investigations and isotopic age analyses, this work studies the relationship between multistage magmatic activity and mineralization in the Tieshanlong ore field. LA-ICP-MS zircon U-Pb isotope analyses revealed that the first-and second-staged granites formed at 154.2.± 0.6 Ma（MSDW = 1.4） and 151.2.± 0.4 Ma（MSDW = 1.5）, with zircon εHf（t） values ranging from-13.1 to-10.5 and from-14.7 to-11.1, respectively. These data suggest that the Tieshanlong granite complex was derived from the partial melting of ancient crustal material. LA-ICP-MS U-Pb dating of wolframite and cassiterite reveals that W-Sn mineralization occurred at 160–150 Ma, which agrees well with the U-Pb dating results of the second-staged granite within analytical errors. The magmatic activity in this ore field can be divided into three stages: 175–154 Ma, 154–150 Ma and 150–145 Ma. The quartz vein-and skarn-type W-Sn mineralization is closely related to second-staged fine-grained twomica granite, and formed earlier than skarn-type Cu-mineralization. This study establishes a metallogenic model for the Tieshanlong ore field, and this model has important practical significance for identifying concealed W-Sn（-Cu） deposits around other granitic complexes in the Nanling Range.

关键词：

吉南夹皮沟地区变质侵入岩的锆石U-Pb定年、Lu-Hf同位素分析及其构造意义

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岩石学报 2024年第11期40卷 3363-3378页

作者：徐强郭佳丽周喜文中国地质科学院地质研究所北京100037 中国地质调查局牡丹江自然资源综合调查中心牡丹江157021

吉南夹皮沟变质地体作为华北克拉通东北部太古宙基底的重要组成部分,其新太古代到古元古代的构造演化过程一直存在争议。为此,在详细野外地质调查基础上,选择三种代表性变质侵入岩,开展了锆石稀土微量元素、锆石U-Pb定年与Lu-Hf同位素... 详细信息

吉南夹皮沟变质地体作为华北克拉通东北部太古宙基底的重要组成部分,其新太古代到古元古代的构造演化过程一直存在争议。为此,在详细野外地质调查基础上,选择三种代表性变质侵入岩,开展了锆石稀土微量元素、锆石U-Pb定年与Lu-Hf同位素分析工作。结果显示:夹皮沟地区紫苏花岗岩的侵位年龄为2.04±8Ma,并记录有2.76±13Ma的变质年龄;其锆石Hf模式年龄介于2.82.2.66Ga之间,εHf(t)值介于1.72.5.1之间,反映为新生地壳物质再循环的产物。变辉长岩体(斜长角闪岩)的侵位年龄为2.2.±14Ma,并记录有2.84±2.Ma的变质年龄。变基性岩墙(石榴角闪岩)的侵位年龄为2.14±18Ma,并记录有1930±16Ma的变质年龄;其岩浆锆石具有异常高的εHf(t)值(7~15),并存在明显的重稀土亏损现象,推测其母岩浆来源于富含石榴石的岩石圈地幔。综合多种信息,认为吉南地区新太古代末期(2.50~2.48Ga)构造热事件受大规模地幔柱活动控制,古元古代中晚期(2.2.1.84Ga)构造热事件可能源于克拉通边缘板块俯冲引起的碰撞造山作用。

关键词：变质侵入体锆石U-Pb定年锆石Lu-Hf同位素夹皮沟吉林南部

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印支造山带:Song Chay构造带

岩石学报 2024年第1期40卷 1-28页

作者：林伟王印刘飞孟令通吴钦颖郭钊李金雁岩石圈演化国家重点实验室中国科学院地质与地球物理研究所中国科学院地球科学研究院北京100029 中国科学院大学地球与行星科学学院北京100049 中石化经纬有限公司地质技术测控技术研究院青岛266071 中国地质调查局武汉地质调查中心武汉430205

印支运动是二十世纪初法国地质学家根据越南北部晚三叠世大规模角度不整合所提出。越南北部的Song Chay构造带作为印支造山带概念的提出地,记录了大量经典的印支造山相关的信息,是理解印支造山带构造演化的关键地区。本文在课题组对Song... 详细信息

印支运动是二十世纪初法国地质学家根据越南北部晚三叠世大规模角度不整合所提出。越南北部的Song Chay构造带作为印支造山带概念的提出地,记录了大量经典的印支造山相关的信息,是理解印支造山带构造演化的关键地区。本文在课题组对Song Chay地区十多年研究基础上,结合前人研究成果,系统厘定了Song Chay构造带的几何空间格架、运动学特征及其演化过程。详细的野外地质考察表明,Song Chay构造带从SW向NE依次可以划分成:新生代的大象山单元、代表缝合带的Song Chay蛇绿混杂岩单元,以及越南东北部褶皱冲断系统。其中蛇绿混杂岩单元和褶皱冲断系统中发育NE-SW向矿物拉伸线理,并具有顶部向NE方向的剪切变形特征,指示了Song Chay洋壳向SW的俯冲以及向NE的逆冲过程。精确的年代学工作表明,Song Chay蛇绿混杂岩中斜长花岗岩的结晶年龄为356.4±2.9Ma,表明至少在早石炭世Song Chay洋就已经形成了成熟的大洋地壳。褶皱冲断带内部的低温年代学数据约束了顶部向NE的剪切变形年龄在2.0~2.5Ma之间,表明为华南和印支板块碰撞时间。另外,Song Chay蛇绿混杂岩基质中碎屑锆石物源研究表明,Song Chay蛇绿混杂岩基质中碎屑锆石主要是来自于俯冲的华南板块,只有很少一部分来自印支板块,因此推测Song Chay洋可能为一个十分有限的小洋盆。构造几何学、运动学以及碎屑锆石物源研究表明,在Song Chay构造带内的“滇-琼缝合带”两侧构造特征可对比,并未因“滇琼洋”的闭合而造成差异。因此,我们认为“滇-琼缝合带”并不能代表一个大洋。根据我们及前人的构造学、岩石学、年代学工作,建立了一个初步的Song Chay洋从晚石炭世至中三叠世的构造演化模型:(1)310~2.0Ma,Song Chay洋开始向SW俯冲到印支板块之下,此时岩浆弧并不发育,蛇绿混杂岩物源主要为华南板块;(2.2.0~2.0Ma,Song Chay洋继续俯冲,此时弧岩浆岩大量发育,蛇绿混杂岩同时接受弧岩浆岩及华南板块碎屑物质;(3)2.0~2.5Ma,Song Chay洋闭合,华南板块与印支板块碰撞;(4)2.5~2.0Ma,印支造山带进入碰撞后伸展阶段。

关键词：印支运动 Song Chay构造带构造解析碎屑锆石滇-琼缝合带