检索结果-南通市图书馆

Granitic Magmatism in Eastern Tethys Domain(Western China) and their Geodynamic Implications

Acta Geologica Sinica(English Edition) 2022年第2期96卷 401-415页

作者： LAI Shaocong ZHU Renzhi QIN Jiangfeng zhao shaowei ZHU Yu State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi’an 710069China

Western China locates in the eastern section of the Tethys domain, granitic rocks in this region with variable formation ages and geochemistry record key information about the crust-mantle structure and thermal evolution during the convergent process of Tethys. In this study, we focus on some crucial granitic magmatism in the western Yangtze, Qinling orogen, and western Sanjiang tectonic belt, where magma sequence in the convergent orogenic belt can provide important information about the crust-mantle structure, thermal condition and melting regime that related to the evolution processes from Pre-to Neo-Tethys. At first, we show some features of Pre-Tethyan magmatism, such as Neoproterozoic magmatism(ca. 870–740 Ma) in the western margin of the Yangtze Block were induced by the assembly and breakup of the Rodinia supercontinent. The complication of voluminous Neoproterozoic igneous rocks indicated that the western Yangtze Block underwent the thermodynamic evolution from hot mantle-cold crust stage(ca. 870–850 Ma) to hot mantle and crust stage(ca. 850–740 Ma). The Neoproterozoic mantle sources beneath the western Yangtze Block were progressively metasomatized by subduction-related compositions from slab fluids(initial at ca. 870 Ma), sediment melts(initial at ca. 850 Ma), to oceanic slab melts(initial at ca. 825–820 Ma) during the persistent subduction process. Secondly, the early Paleozoic magmatism can be well related to three distinctive stages(variable interaction of mantle-crust to crustal melting to variable sources) from an Andeans-type continental margin to collision to extension in response to the evolution of ProtoTethys and final assembly of Gondwana continent. Thirdly, the Paleo-Tethys magmatism, Triassic granites in the Qinling orogenic display identical formation ages and Lu-Hf isotopic compositions with the related mafic enclaves, indicate a coeval melting event of lower continental crust and mantle lithosphere in the Triassic convergent process and a

关键词： granitic magmatism geodynamic western China eastern Tethys

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

Provenance Analysis of the Cenozoic Sedimentary Successions in the Ningnan Basin,NE Tibetan Plateau:Constraints on Sedimentological and Tectonomorphological Evolution

引用

Acta Geologica Sinica(English Edition) 2024年第6期98卷 1441-1460页

作者： zhao Xiaochen zhao shaowei LIU Chiyang WANG Jianqiang HUANG Lei NIU Yazhuo CHEN Yingtao DU Fangpeng PENG Heng FENG Zeyi DONG Yingchun College of Geology and Environment Xi’an University of Science and TechnologyXi’an 710054China Key Laboratory of Western China’s Mineral Resources and Geological Engineering Ministry of EducationChang’an UniversityXi’an 710054China School of Earth Science and Resources Chang’an UniversityXi’an 710054China State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityXi’an 710069China Key Laboratory for the Study of Focused Magmatism and Giant Ore Deposits Xi'an Center of Geological Survey(Northwest China Center of Geoscience Innovation)China Geological SurveyXi'an 710119China School of Petroleum Engineering and Environmental Engineering Yan'an UniversityYan'anShaanxi 716000China

The evolution and reforming history of the Cenozoic basins in the northeastern Tibetan Plateau(NETP)are significant for understanding the northeastward growth of the Tibetan *** sediments in these basins archived the spatial-temporal patterns of the surface uplift and deformation processes in response to remote effects of growth of the ***,we present an integrated provenance analysis of the Ningnan basin in the NETP to provide direct insights into the basin evolution and further constraints of the Tibetan Plateau’s northeastward *** this study,the Cenozoic strata(Sikouzi,Qingshuiying,Zhang’enpu and Ganhegou formations)in the Ningnan basin yield complex detrital zircon age distributions featured by predominant age populations at 200-360 Ma and 360-540 Ma with minor Precambrian *** zircon U-Pb ages indicate that the southwestern Ordos Block,the western Qinling orogenic belt,and the eastern Qilian orogenic belt are primary source ***,adjacent local paleo-uplifts(e.g.,Xihua,Nanhua,Xiangshan,Liupan Mts.)also provided minor volumes of *** addition,conglomerates and paleocurrent directions of the Sikouzi-Ganhegou formations exhibit an apparent change since the late Miocene,revealing an obvious provenance *** quantitatively determined mixing proportions of the surrounding source areas also reveals that the early source-to-sink system was replaced during the deposition of the Ganhegou *** with previous studies,we suggest that the formation of the Ningnan basin was controlled by normal faults in extension setting and experienced continued sediment accumulation during the Qingshuiying-Zhang’enpu period;since the late Miocene,the significant provenance shift reflects the obvious northeastward growth of the NETP and led to the extinction of the Ningnan basin.

关键词： provenance detrital zircon geochronology Cenozoic Ningnan basin northeastern Tibetan Plateau

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 Early Paleozoic Garnet Amphibolite in the Wenquan Complex,Northern Margin of the Yili Block,NW China

引用

Acta Geologica Sinica(English Edition) 2021年第2期95卷 696-698页

作者： CHEN Youxin CHENG Kaikai PEI Xianzhi WANG Meng zhao shaowei LI Zuochen LI Ruibao PEI Lei GAO feng Key Laboratory of Western China's Mineral Resources and Geological Engineering Ministry of EducationSchool of Earth Science and ResourcesChang'an UniversityXi'an 710054China Mechanical Engineering Institute Xi'an Shiyou UniversityXi'an 710065China

Objective High-pressure(HP)and ultrahigh-pressure(UHP)minerals tend to be preserved in mafic and ultramafic metamorphic rocks(*** and garnet amphibolite)rather than felsic ***,HP and UHP rocks are thought to be formed as a result of the tectonic burial or subduction of oceanic crust or thicked continental lithosphere to depths corresponding to the eclogite facies metamorphism,followed by fast uplift(Ernst et al.,2007).

关键词： uplift depths thick

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

Acoustic Prediction and Risk Evaluation of Shallow Gas in Deep-Water Areas

引用

Journal of Ocean University of China 2022年第5期21卷 1147-1153页

作者： YANG Jin WU Shiguo TONG Gang WANG Huanhuan GUO Yongbin ZHANG Weiguo zhao shaowei SONG Yu YIN Qishuai XU Fei College of Safety and Ocean Engineering China University of Petroleum(BeijingBeijing 102249China Institute of Deep-Sea Science and Engineering Chinese Academy of SciencesSanya 572000China CNOOC Research Institute Beijing 100028China CNOOC China Limited Shenzhen Branch Shenzhen 518000China CNOOC China Limited Beijing 100010China

Shallow gas is a potential risk in deep-water drilling that must not be ignored,as it may cause major safety problems,such as well kicks and ***,the pre-drilling prediction of shallow gas is *** this reason,this paper conducted deep-water shallow gas acoustic simulation experiments based on the characteristics of deep-water shallow soil properties and the theory of sound wave speed *** results indicate that the propagation speed of sound waves in shallow gas increases with an in-crease in pressure and decreases with increasing *** and sound wave speed are basically functions of the power *** with the theory of sound wave propagation in a saturated medium,this paper establishes a multivariate functional relationship between sound wave speed and formation pressure and *** numerical simulation method is adopted to simulate shal-low gas eruptions under different pressure *** gas pressure coefficients that fall within the ranges of 1.0-1.1,1.1-1.2,and exceeding 1.2 are defined as low-,medium-,and high-risk,respectively,based on actual *** risk assessment me-thod has been successfully applied to more than 20 deep-water wells in the South China Sea,with a prediction accuracy of over 90%.

关键词： shallow gas acoustic simulation experiment sound wave speed pressure coefficient risk evaluation

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

New Discovery of Neocalamites from the Upper Triassic Daheba Formation in West Qinling, Northwest China

引用

Acta Geologica Sinica(English Edition) 2019年第3期93卷 756-762页

作者： LI Zuochen PEI Xianzhi WEI Liyong GUO Junfeng XIAO Liang LI Ruibao PEI Lei zhao Wenchuan WANG Meng CHEN Youxin LIU Chengjun zhao shaowei GAO Feng SHAO Jiakun Qin Li zhao Changcun ZHANG Zhen Key Laboratory of Western China's Mineral Resources and Geological Engineering Ministry of EducationFaculty of Earth Science and ResourcesChang'an UniversityXi'an 710054ShaanxiChina Department of Geosciences Eberhard Karls University TubingenTubingen 72074Baden-WiirttembergGermany No.5 Gold Geological Party of CAPF Xi'an 710100ShaanxiChina

Objective Neocalamites is a common plant fossil from the Triassic to the Middle Jurassic. Neocalamites fossils are commonly found in coal-bearing sedimentary rocks of Rhaetian stage from South China and the Yanchang Group from North China(Mei and Liu, 2017). Moreover, the fossils also distribute in the Late Triassic such as the Babaoshan Group in Dulan and Darigemole Group in Gangcha of Qinghai Province, the Haojiagou Formation in Turpan and the Taliqike Formation in Kuche of ***,Neocalamites fossils are also found in the Early and Middle Jurassic strata of North China.

关键词： Neocalamites Triassic Daheba 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

陆缘弧岩浆寂静期花岗质岩浆成因:以青藏高原东南缘腾冲地块晚白垩世花岗岩为例

引用

岩石学报 2025年第1期41卷 91-111页

作者：赵少伟方肖雨文泰赖绍聪裴先治李佐臣长安大学地球科学与资源学院西安710054 大陆动力学国家重点实验室西北大学地质学系西安710069

陆缘弧岩浆活动常具有幕式特征,展现出弧岩浆爆发和寂静交替的现象。虽然对其律动特征广泛研究,但目前对于岩浆寂静期的岩浆成因机制了解较少。本文通过对比新特提斯洋俯冲相关的陆缘弧岩浆分布特征,以新特提斯洋俯冲过程中陆源弧岩浆... 详细信息

陆缘弧岩浆活动常具有幕式特征,展现出弧岩浆爆发和寂静交替的现象。虽然对其律动特征广泛研究,但目前对于岩浆寂静期的岩浆成因机制了解较少。本文通过对比新特提斯洋俯冲相关的陆缘弧岩浆分布特征,以新特提斯洋俯冲过程中陆源弧岩浆寂静期的腾冲地块晚白垩世花岗质岩石为研究对象,探讨其形成过程,为寂静期岩浆的成因动力学机制提供重要约束。腾冲地块户撒地区二长花岗岩锆石U-Pb年龄为73Ma,形成于新特提斯洋俯冲陆缘弧晚白垩世(85~65Ma)的岩浆寂静期,为准铝质-弱过铝质和钙碱质花岗岩,具有富集的Nd-Hf同位素,其源岩为高黎贡山群正变质片麻岩。通过区域对比,晚白垩世(85~65Ma)新特提斯洋低角度俯冲相关的陆源弧应为挤压环境,腾冲地块同期花岗岩类应形成于加厚地壳背景下。通过与爆发期(55~50Ma)岩石组合、地化特征、锆饱和温度和斜长石环带特征的对比,本文认为腾冲地块晚白垩世花岗岩类是加厚地壳长期热积累诱发的下地壳片麻岩部分熔融的结果。因此,在幔源岩浆低通量的陆缘弧寂静期,通过加厚地壳长期热积累可以在陆缘弧局部形成长英质岩浆。

关键词：岩浆寂静期腾冲地块晚白垩世花岗岩

来源：

维普期刊数据库博看期刊

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

Recovery of molybdenum，phosphorus and arsenic from leaching solution ofmolybdenum residues by solvent extraction with primary amine and tributylphosphate

引用

Journal of Environmental Sciences 1995年第4期7卷 468-477页

作者： zhao Youcai, Chen shaowei, Xu Dimin(National Laboratory of Pollution Control and Reclamation, School of Environmental Engineering , Tongji University, Shanghai 200092,China)Lin Ming(Institute of Applied Technology, Tongji University, Shanghai 200092, National Lab of Pollution Control Tongji University Shanghai 200092 China

Ｒｅｃｏｖｅｒｙｏｆｍｏｌｙｂｄｅｎｕｍ，ｐｈｏｓｐｈｏｒｕｓａｎｄａｒｓｅｎｉｃｆｒｏｍｌｅａｃｈｉｎｇｓｏｌｕｔｉｏｎｏｆｍｏｌｙｂｄｅｎｕｍｒｅｓｉｄｕｅｓｂｙｓｏｌｖｅｎｔｅｘｔｒａｃｔｉｏｎｗｉｔｈｐｒｉｍ... 详细信息

Ｒｅｃｏｖｅｒｙｏｆｍｏｌｙｂｄｅｎｕｍ，ｐｈｏｓｐｈｏｒｕｓａｎｄａｒｓｅｎｉｃｆｒｏｍｌｅａｃｈｉｎｇｓｏｌｕｔｉｏｎｏｆｍｏｌｙｂｄｅｎｕｍｒｅｓｉｄｕｅｓｂｙｓｏｌｖｅｎｔｅｘｔｒａｃｔｉｏｎｗｉｔｈｐｒｉｍａｒｙａｍｉｎｅａｎｄｔｒｉｂｕｔ...

关键词： molybdenum arsenic phosphorus solvent extraction molybdenum residues.

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

Oligomer-specific single chain variable fragment antibody attenuates memory deficits and brain amyloid burden in Alzheimer disease transgenic mice

引用

中国药理通讯 2013年第2期30卷 35-37页

作者： Min zhao shaowei Wang Yajing Su Weiwei Zhou Xiaolin Yu Ruitian Liu National Key Laboratory of Biochemical Engineering Institute of Process Engineering Chinese Academy of Sciences

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

端柱配置HRB600箍筋剪力墙的抗震性能试验研究

引用

建筑结构 2019年第13期49卷 93-97,113页

作者：赵少伟刘坤河北工业大学土木与交通学院天津300401 河北省土木工程技术研究中心天津300401 天津深城建筑检测有限公司天津300143

为了研究HRB600高强箍筋用于剪力墙边缘约束构件(端柱)对剪力墙抗震性能的影响,对4片端柱配有HRB600高强箍筋的混凝土剪力墙进行拟静力试验,研究了各试件的破坏形态、滞回曲线、骨架曲线、承载能力、延性、变形能力、刚度退化、耗能能... 详细信息

为了研究HRB600高强箍筋用于剪力墙边缘约束构件(端柱)对剪力墙抗震性能的影响,对4片端柱配有HRB600高强箍筋的混凝土剪力墙进行拟静力试验,研究了各试件的破坏形态、滞回曲线、骨架曲线、承载能力、延性、变形能力、刚度退化、耗能能力及顶点位移角等。结果表明,随着剪跨比的降低,剪力墙由弯曲破坏向弯剪破坏转变,承载力和早期刚度有所提高,但变形能力和耗能能力降低;对于高剪跨比的试件,端柱配置HRB600箍筋对剪力墙的承载力、延性和耗能能力有一定提高。对于低剪跨比的试件,端柱配置HRB600箍筋不能提高其抗震性能;用顶点位移角限值作为端柱配有HRB600高强箍筋的剪力墙的性能指标,可以较好地反映其性能水平与损伤程度之间的关系。

关键词：剪力墙 HRB600钢筋约束端柱抗震性能

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

Seismic Behavior of Frame with Specially Shaped Columns Subjected to Cyclic Load

引用

Transactions of Tianjin University 2007年第5期13卷 340-343页

作者：王铁成李新华赵少伟 School of Civil Engineering Tianjin University

In order to study the seismic behavior of frame with specially shaped columns,the hysteretic curve was analyzed based on a quasi-static test of a two-span,three-story frame with specially shaped *** top layer framework curve and the corresponding resilience model were obtained from the hysteretic *** the stiffness and strength degeneration were also *** results indicated that the stiffness degeneration is not obvious,thus the frame with specially shaped columns has high earthquake-resistant *** resilience model calculated from the test can provide reference for design and nonlinear finite element analysis.

关键词： vspecially shaped columns frame hysteretic behavior resilience

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

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：