检索结果-南通市图书馆

Petrological and Geochemical Constraints on the Origin of Strongly Peraluminous Granitoids from the Triassic Guangtoushan Pluton in South Qinling

引用

Acta Geologica Sinica(English Edition) 2023年第6期97卷 1683-1697页

作者： GUAN Qi CAO Junlin WANG Rixiang XIE Peiling XIA Wenyue LI Xiaowei Hebei Key Laboratory of Strategic Critical Mineral Resources Hebei GEO UniversityShijiazhuang 050031China Hebei province Collaborative Innovation Center for Strategic Critical Mineral Research College of Earth SciencesHebei GEO UniversityShijiazhuang 050031China shandong province nuclear industry geological group 273 YantaiShandong 264006China State Key Laboratory of geological Process and Mineral Resources School of Earth Science and Mineral ResourcesChina University of GeosciencesBeijing 100083China MNR Key Laboratory of Gold Mineralization Processes and Resources Utilization Shandong Key Laboratory of Mineralization Geological Processes and Resources Utilization in Metallic MineralsShandong Institute of Geological ScienceJinan 250013China The Third geological Exploration Institute of Qinghai province Xining 810029China

As an important part of the early Mesozoic granites in the South Qinling tectonic belt(SQTB),the Guangtoushan pluton provides a material basis for research on the composition of magma sources and the effects of peritectic assemblage entrainment(PAE)on the changes in the granite *** shown by the results of LA-ICP-MS zircon U-Pb dating,the Guangtoushan pluton was emplaced during the Late Triassic(214-212 Ma)and was formed in the post-collision stage between the SQTB and the Yangtze *** collected samples had high SiO_(2)content and low Cr and Ni contents,indicating that the magmas did not undergo significant crust-mantle mixing during their *** Guangtoushan granitoids were distributed along the trend line of magmatic fractional crystallization in the F-An-Or *** result,combined with the relatively homogeneous Sr-Nd isotopic composition,implies that the Guangtoushan pluton underwent slight assimilation and *** can be inferred from the comparison between the compositions of the Guangtoushan granitoids and various fluid-absent experimental melts,the magma sources of the Guangtoushan granitoids contain a variety of materials,such as graywackes,pyroclastic graywackes,and pelites and are not derived from lower crustal mafic *** correlation between the maficity and the major and trace elements further indicates that the strongly peraluminous granitoids from the Guangtoushan pluton was formed by the partial melting of biotite-bearing crustal rocks and its magmatic evolution was accompanied by the entrainment of clinopyroxenes and accessory minerals.

关键词： petrogenesis strongly peraluminous peritectic assemblage entrainment(PAE) Guangtoushan granitoids South Qinling

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Magma Chamber Process of Post-collisional Magmatism: Insight from Textural and Elemental Characteristics of Plagioclase from the Tatun Volcanic group, Northern Taiwan Volcanic Zone

引用

Acta Geologica Sinica(English Edition) 2022年第5期96卷 1587-1599页

作者： ZHANG Xia GUO Kun ZHANG Yu LAI Zhiqing JIANG Shulong JIANG Wenpeng LI Jingbo Pilot National Laboratory for Marine Science and Technology(Qingdao) QingdaoShandong 266237China Key Laboratory of Marine Geology and Environment Institute of OceanologyChinese Academy of SciencesQingdaoShandong 266071China Key Lab of Submarine Geosciences and Prospecting Techniques MOE and College of Marine GeosciencesOcean University of ChinaQingdaoShandong 266100China shandong province nuclear industry geological group 248 QingdaoShandong 266000China

The Taiwan mountain belt, one of the youngest orogenies in the world, is caused by the collision of the Luzon arc with the Eurasian margin, which leads to post-collisional extension and magmatism in the Northern Taiwan Volcanic Zone(NTVZ). The magma chamber process in this region has not previously been elucidated in detail. In this paper, the textural and compositional features of plagioclase phenocrysts in basalt from the Tatun Volcanic group(TTVG) were studied to restrict the dynamics of magma system. Results show that the magma melts in TTVG are mainly sourced from the underlying MORB-like mantle wedge but influenced by incorporation of subduction components, causing the elevated Sr/Y and Ba/Y ratios in magma melts. The subduction components are mainly transported in the form of sediment melt. The plagioclase phenocrysts in the TTVG volcanic rocks are generally coarsely core-sieved with a clear rim. The An contents in the rims of plagioclase are much lower than those of cores, and elevated FeO concentrations are detected in the plagioclase rims. We propose there exists a double-layer magma chamber in this region. The core of the plagioclase was crystalized in the deeper quiescent magma chamber(~21 km), which was subsequently partially dissolved during the ascent of magma melt under H_(2)O-undersaturated condition, forming the typical coarsely sieved texture and synneusis. When this crystal-rich melt migrates into the shallower chamber, water saturation is reached and more sodic plagioclase formed as the rim of phenocryst. Due to the considerably higher fO_(2) in the shallow chamber than in the deeper one, and the distribution of Fe between plagioclase and melt positively correlates with fO_(2), the FeO content in the plagioclase rim elevates in conjunction with increasing fO_(2).

关键词： plagioclase textural and compositional features dynamics of magma system Tatun Volcanic group

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Transformation from Neoproterozoic Sinistral to Early Paleozoic Dextral Shearing for the Jingdezhen Ductile Shear Zone in the Jiangnan Orogen, South China

引用

Journal of Earth Science 2018年第2期29卷 376-390页

作者： Xianbing Xu Shoufa Lin Shuai Tang Xuefen Zhang School of Earth Sciences China University of Geosciences Department of Earth and Environmental Sciences University of Waterloo School of Resources and Environment Hefei University of Technology No.266 geological Party Nuclear Industry Geological Bureau of Jiangxi Province State Key Laboratory for nuclear Resources and Environment East China Institute of Technology

The Jingdezhen ductile shear zone is evolved from the Neoproterozoic Zhangyuan ophiolite melange belt in the eastern Jiangnan Orogen, South China. Comprehensive study of geometry, kinematics, quartz c-axis fabric, temperature-pressure conditions and geochronology were conducted in this study. The Jingdezhen shear zone extends -180 km along the NE orientation with two groups of subvertical fo- liation and subhorizontal lineation. One group of foliation strikes NEN orientation whereas another one NEE orientation. Field investigation, microscopic observation and quartz c-axis fabric show that sinistral shearing along NEN-striking foliation occurred earlier than dextral shearing along NEE-striking foliation. Syn-tectonic staurolite porphyroblasts and deformation manner of feldspar imply that sinistral shearing occurred at 530-420 ℃ and 6-2 kbar. Deformation manner and c-axis fabric of quartz and pre-tectonic staurolite porphyroblasts indicate that dextral shearing took place at 420-300 ℃. LA-ICP-MS zircon U-Pb and mica ^40Ar/^39Ar dating indicate that the sinistral shearing occurred during Neoproterozoic oro- geny （830-800 Ma） whereas the dextral shearing at 447＋12 Ma. The sinistral shearing resulted from the Neoproterozoic final assembly between the Yangtze and Cathaysia blocks. The dextral shearing was caused by Early Paleozoic orogen parallel extension and clockwise rotation.

关键词： Jingdezhen ductile shear zone quartz c-axis fabric temperature-pressure condition geochronology Jiangnan Orogen South China.

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Cooling History of Mesozoic Magmatism and Implications for Large-Scale Gold Mineralization in the Jiaodong Peninsula, East China: Constraints from T-t Paths Determined by U-Pb Thermochronology of Zircon and Apatite

引用

Journal of Earth Science 2024年第3期35卷 878-889页

作者： Guangyan Zhou Mingchun Song Long Li Yan Luo DGraham Pearson Jianbo Zhou Zhengjiang Ding Xuefeng Yu Yingxin Song Jie Li Shiyong Li Faculty of Earth Sciences China University of GeosciencesWuhan 430074China Department of Earth&Atmospheric Sciences University of AlbertaEdmontonAlberta T6G 2E3Canada Hebei Key Laboratory of Strategic Critical Mineral Resources Hebei GEO UniversityShijiazhuang 050031China shandong Provincial No.6 Exploration Institute of Geology and Mineral Resources Weihai 264209China College of Earth Sciences Jilin UniversityChangchun 130061China Ministry of Natural Resources Key Laboratory of Gold Mineralization Processes and Resources Utilization Key Laboratory of Metallogenic-Geologic Processes and Comprehensive Utilization of Minerals Resources in Shandong ProvinceShandong Institute of Geological SciencesJinan 250013China shandong nuclear industry geological group 273 Yantai 264006China

The Mesozoic intrusions of the Jiaodong Peninsula,eastern China,host giant gold *** the genesis of these deposits requires the determination of the source of the parental auriferous fluid and the timing of gold mineralization,which are strongly influenced by the cooling/uplift histories of the hosting *** performed an integrated U-Pb geochronology study on both zircon and apatite from four major magmatic episodes of the Jiaodong *** zircon and apatite U-Pb ages are 156.9±1.2 and 137.2±2.4 Ma for the Linglong intrusion,129.9±1.0 and 125.0±3.8 Ma for the Qujia intrusion,119.5±0.7 and 117.2±1.8 Ma for the Liulinzhuang intrusion,118.6±1.0 and 111.6±1.6 Ma for the Nansu intrusion,*** coupled zircon and apatite data of these granitoids indicate a slow cooling rate(11.9°C/Ma)in the Late Jurassic,and rapid uplift and cooling(35.8-29.2°C/Ma)in the Early *** dramatically increased uplift and cooling period in the Early Cretaceous are contemporaneous with large-scale gold mineralization in the Jiaodong *** implies that thermal upwelling of asthenosphere and related tectonic extension played an important role in gold remobilization and precipitation.

关键词： magmatism geochronology zircon apatite gold deposits Jiaodong Peninsula

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Discovery of the Dagele Eclogite in East Kunlun,Western China and Its Zircon SHRIMP U-Pb Ages:New Constrains on the Central Kunlun Suture Zone

引用

Acta Geologica Sinica(English Edition) 2017年第3期91卷 1153-1154页

作者： DU Wei JIANG Changyi Tang Zhongli XIA Mingzhe XIA Zhaode LING Jinlan ZHOU Wei WANG Bangyao School of Earth Science and Resources Chang'an University Key Laboratory of the study of Focused Magmatism and Giant Ore Deposits MLR Sino Shannxi nuclear industry group geological Survey Co. Ltd.

Objective Eclogites are important indicators of ancient plate boundaries or paleosuture zones. Despite their great geological significance, very few investigations have been carried out in the Kunlun region. The Central East Kunlun fault zone was believed to be an Early Paleozoic suture zone, but there has been no reliable evidence for this, though studies on ophiolite, granite, and basic granulite indicate that the Early Paleozoic orogeny occurred in the East Kunlun. This work focused on the Dagele eclogites in Central East Kunlun to provide new constraints for the Central East Kunlun suture zone.

关键词： SHRIMP Pb Discovery of the Dagele Eclogite in East Kunlun,Western China and Its Zircon SHRIMP U-Pb Ages:New Constrains on the Central Kunlun Suture Zone of in on

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Mechanism of spatial emplacement of Shanhou gold ore body in Laixi of shandong and its prospecting significance

引用

Global Geology 2016年第3期19卷 144-152页

作者： LIU Fengxu WANG Li WANG Dunrong XU Jingge CUI Zhiyong College of Earth Sciences Jilin University geological Bureau of nuclear industry Jilin Province shandong Gold Mining ( Lacey) Co. LTD

Through analysis of geological characteristics of the gold deposit,the shape,occurrence,and spatial distribution of ore-controlling fault plane in the Shanhou mining area were investigated,and the regularities of enrichment and emplacement of ore body were summarized. The analysis shows that the Shanhou gold deposit was controlled by NE-NNE Zhaoping fault zone; the fault gouge developed in fault zone provides a barrier to ore-bearing hydrothermal solution,and the industrial ore body is all distributed within 40 m of footwall of main fault plane. The industrial ore body is mainly enriched in the NE positions of fault where the deep dips changed to flat dips,and shows the obvious regularity of NE lateral trending with angle around 75°. The stress analysis of fault in mineralization epoch showed that the ore-controlling structure presented the characteristics of righthanded rotation inverse-fault activity in mineralization epoch,and the host space tended to occur in NE regional tension positions where the dips become flat in the strike of fault,causing emplacement of ore body. It is thought by combining equal interval distribution of deposit with spatial variation of industrial ore body and orecontrolling fault structure that the Shanhou gold deposit recurred in regularity and the non-ore interval occurred in the ore body. Meanwhile,it is predicted that the favorable target area of prospecting lies in the areas of deep main fault plane with NE strike( > 30°) and the deep dips changing to flat dips in the Shanhou mining area,and the prospecting should be emphasized. The favorable deep mineralization prospect exists in middle Beibo mining area,where is the key area for future prospecting.

关键词： spatial emplacement Shanhou deposit Laixi shandong

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Multiple-Stage Mineralization in the Huayangchuan U-REE-Mo-Cu-Fe Ore Belt of the Qinling Orogen,Central China:geological and Re-Os Geochronological Constraints

引用

Journal of Earth Science 2022年第1期33卷 193-204页

作者： Hongjun Jiang Chunsi Yang Dequan Wang Hui Zheng Jie Li Huayong Chen Key Laboratory of Mineralogy and Metallogeny Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China CAS Center for Excellence in Deep Earth Science Guangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China Guangdong Provincial Key Laboratory of Mineral Physics and Materials Guangzhou 510640China State Key Laboratory of Isotope Geochemistry Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China geological Party No.214 Sino Shaanxi Nuclear Industry GroupXi'an 710100China Sino Shaanxi nuclear industry group Xi'an 710100China

The Huayangchuan ore belt is located in the western segment of Xiaoqinling Orogen in the southern margin of the North China Craton(NCC),and hosts voluminous magmatism and significant U-REE-Mo-Cu-Fe polymetallic ***,geochronological framework of the various mineralization phases in this region is poorly ***,we present new Re-Os isochron ages on magnetite from the Caotan Fe deposit(2 675 ± 410 Ma,MSWD = 0.55),and on pyrite from the Jialu REE deposit(2 127 ± 280 Ma,MSWD = 1.9) and Yuejiawa Cu deposit(418 ± 23 Ma,MSWD =11.5),and Re-Os weighted average model age on pyrite from the Taoyuan Mo-U deposit(235 ± 14 Ma,MSWD = 0.17).These ages,combined with regional geology and mineralization ages from other deposits,suggest that mineralization in the Huayangchuan ore belt lasted from the Neoarchean to the Late *** mineralization corresponds to regional tectono-magmatic events,including the Neoarchean alkali magmatism(REE mineralization),Paleoproterozoic plagioclase-amphibolite emplacement(Fe mineralization),Paleoproterozoic pegmatite magmatism(U mineralization),Paleozoic Shangdan oceanic slab subduction-related arc magmatism(Cu mineralization),Early Mesozoic Paleo-Tethys Ocean subduction-related arc magmatism(Mo-U mineralization),and Late Mesozoic Paleo-Pacific oceanic plate subduction direction change-related Mo(-Pb) *** proposed that the Huayangchuan ore belt has undergone prolonged metallogenic evolution,and the magmatism and associated mineralization were controlled by regional geodynamic events.

关键词： Re-Os dating U-REE-Mo-Cu-Fe mineralization Huayangchuan ore belt extra-long metallogenic history Qinling Orogen geochemistry

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Exhumation History and Exploration Potential of Gold Deposits in the NE Jiaodong Peninsula,North China:Evidence from Apatite and Zircon Fission Track Thermochronology

引用

Journal of Earth Science 2023年第3期34卷 776-789页

作者： Yuanlin Chen Huan Li Chaoyang Zheng Safiyanu Muhammad Elatikpo Liu’an Duan Bo Feng Dadou Li Rehan Khan Key Laboratory of Metallogenic Prediction of Nonferrous Metals and geological Environment Monitoring Ministry of EducationSchool of Geosciences and Info-PhysicsCentral South UniversityChangsha 410083China College of Resources and Environmental Engineering Guizhou UniversityGuiyang 550025China Department of Geology Ahmadu Bello University ZariaNigeria Yantai geological Survey Center of Coastal Zone China Geological SurveyYantai 264004China Xintai Gold and Mining industry Co.Ltd Yantai 265147China No.1 Institute of Geology and Mineral Resources of Shangdong province Jinan 250100China

As the most important gold producer in China,the Northwest Jiaodong Peninsula is famous for its large gold *** recent years,the discovery of gold mineralization has reached a depth of 4000 m below the surface in this *** has attracted significant interest from explorers about the prospecting potential at greater ***,the current deep drilling shows that the prospecting effect in the west portion is better than the region to the *** it imply that there is a difference in prospecting potential between the east and the west?This paper seeks to address the issue through fission track thermochronology on apatite and zircon to reveal the temperature-time evolution relationship of rock mass and to inverts their thermal evolution *** addition,this study analyzes the transformation of ore deposits after mineralization,quantitatively calculates the uplift-erosion rate of rock mass,and summarizes the preservation law of ore *** on the thermal history simulation of the apatite fission track,our results show that the Guocheng gold belt has experienced three stages of thermal evolution:108-74,74-27,and 27-0 *** uplift and cooling processes of the threestage tectonic uplift events are the results of multi-stage Pacific plate *** calculated total denudation depth of the gold deposit in the Guocheng gold belt from Cretaceous to the present is about 3.4-5.3 *** metallogenic depth of the ore body in the gold belt is 5.6-8.0 km,which indicates that the ore body in the Guocheng gold belt has suffered a significant degree of *** is speculated that the location with less denudation in the southwest has greater prospecting *** results quantitatively identify the uplift and denudation of the deposit after mineralization,which provides a new theoretical reference for regional mineralization,deep prospecting and exploration.

关键词： Queshan pluton Muniushan pluton thermal history simulation apatite zircon exhumation magnitude exploration potential gold deposits Guocheng gold belt

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Petrogenesis Significance of Chromian Spinels from Northeastern Jiangxi province Ophiolite(NEJXO), China: Paleogeodynamic Implications

引用

Acta Geologica Sinica(English Edition) 2015年第A02期89卷 18-19页

作者： GUO Guolin FAN Xiujun YANG Jingsui LIU Xiaodong ZHANG Yong ZHOU Wenting Fundamental Science on Radioactive Geology and Exploration Technology Laboratory East China Institute ofTechnology Nanchang Jiangxi 330013 China geological Survey of Jiangxi province Nanchang Jiangxi 330030 China CARMA State Key Laboratory of Continental Tectonic and Dynamics Institute of Geology Chinese Academy ofGeological Sciences Beijing 10003 7 China Team 209 of Yunnan nuclear industry Kunming Yunnan 650000 China

The northeastern Jiangxi province ophiolite is located in the SE margin of the Yangtze Block, along the Zhangshudun （Yiyang） Xingangshan （Dexing）, ophiolite belt extending northeast for about 100kin （Zhou, 1989; Li et al., 1997）. The original sequence of the NE Jiangxi ophiolite suite has been structurally disrupted and enclosed by a strongly foliated flysch sequence. Most of the dismembered peridotites of NEJXO are highly serpentinized, requiring care in applying petrochemistry and geochemistry to distinguish their tectonic setting,

关键词： RESEARCH Chromium Magmatism Fugacity Olivine Peridotite Petrogenesis Spinel group

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

geological characteristics and ore-controlling structure of a Uranium deposit in Wulan County,Qinghai province

Geological characteristics and ore-controlling structure of ...

引用

第三届全国青年地质大会

作者： Wei Li Qing Chen No.203 Research Institute of nuclear industry

1 General geology The uranium deposit is located in the northeastern margin of the Qaidam basin and belongs to the eastern margin of the remnant belt of the northern margin of the Qaidam basin,and to the southern margin of the Tuomuoerrite ophiolite melange *** exposure strata in the area are the Dakendaban group of lower Proterozoic and the Tanjianshan group of *** Tanjianshan group of Ordovi-

关键词：

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：