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Carboniferous integrative stratigraphy,biotas,and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年第4期67卷 1071-1106页

作者： keyi hu Xiangdong WANG Wenqi WANG Yingfan SONG Xunyan YE Lu LI Yukun SHI Sunrong YANG Ying LI State Key Laboratory for Mineral Deposits Research School of Earth Sciences and Engineering and Frontiers Science Center for Critical Earth Material CyclingNanjing UniversityNanjing 210023China

During the Carboniferous Period,the Qinghai-Tibetan Plateau and its surrounding areas were located in quite different paleogeographic positions with various sedimentary and biological *** is important to systematically compile and summarize the Carboniferous strata and biotas of the Qinghai-Tibetan Plateau and its surrounding areas,to establish an integrated stratigraphic framework for correlation,and to reconstruct the paleogeography for correctly understanding the breakup of the Gondwana Continent and the evolution of the Paleo-Tethys Ocean in the Late *** Carboniferous of the Qinghai-Tibetan Plateau and its surrounding areas can be subdivided into the Gondwanan,Cimmerian,and Tethyan *** Gondwanan-type Carboniferous are distributed in the North Himalayan,Kangmar-Lhunze,and Zanda-Zumba regions of the South Tibet Subprovince and northern India-Pakistan Area,where only the Mississippian is developed and the biota is of Gondwanan *** Cimmerian-type Carboniferous,which are found in the Baoshan,Tengchong,Coqen-Xainza,LhasaZayu,Nagqu-Biru,and South Qiangtang regions,as well as Shan-Thai and South Afghanistan-Pamir areas,also represent only the Mississippian strata,but their biota is characterized by mixed characters of European,South China,Australian,and North American *** Tethyan-type Carboniferous are distributed in the Tanggula Mountains,Hoh Xil-Bayanhar,ChamdoHengduanshan,Tiekelike,West Kunlun,Karakorum,East Kunlun-Central Qinling,and Qilian regions,where the Carboniferous succession is well developed,and the biota is of warm-water Tethyan *** biostratigraphical correlation of the Gondwanan-type and Cimmerian-type Carboniferous is based mainly on conodonts and additionally on brachiopods and rugose *** Mississippian of the Tethyan-type Carboniferous is correlated mainly by using rugose corals and brachiopods,whereas in the Pennsylvanian foraminifera(fusuline)and conodonts are regarded as primary fossil groups,subord

关键词： Qinghai-Tibetan Plateau Carboniferous Lithostratigraphy Biota Stratigraphic correlation

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B型舱VLEC设计关键技术研究

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中国造船 2024年第1期65卷 97-108页

作者：周清华胡可一上海交通大学船舶海洋与建筑工程学院上海200240 江南造船(集团)有限责任公司上海201913

以全球首艘设有IMO B型液货舱的99 000 m^(3) VLEC为研究对象,对其研发设计中的若干关键技术进行分析。对VLEC货物围护系统进行选型,运用CFD仿真和模型试验完成液货舱与船体匹配的VS-BOW线型开发,采用有限元分析技术完成液舱支撑系统受... 详细信息

以全球首艘设有IMO B型液货舱的99 000 m^(3) VLEC为研究对象,对其研发设计中的若干关键技术进行分析。对VLEC货物围护系统进行选型,运用CFD仿真和模型试验完成液货舱与船体匹配的VS-BOW线型开发,采用有限元分析技术完成液舱支撑系统受力分析和强度评估,应用水动力分析方法在频域上求解液舱晃荡与船体运动耦合效应,运用“先漏后破”设计理念和自主研发的泄漏计算程序评估液舱疲劳裂纹扩展与泄漏量,形成了具有自主知识产权的IMO B型舱BrilliancE货物围护系统,其安全性、可靠性和经济性已得到VLEC实船营运的验证。

关键词： VLEC B型舱线型开发液舱晃荡疲劳裂纹扩展泄漏分析

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Integrative Carboniferous stratigraphy, biotas and paleogeographical evolution of the Qinghai-Tibetan Plateau and its surrounding areas

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Science China Earth Sciences 2024年

During the Carboniferous Period, the Qinghai-Tibetan Plateau and its surrounding areas were located in quite different paleogeographic positions with various sedimentary and biological types. It is important to systematically compile and summarize the Carboniferous strata and biotas of the Qinghai-Tibetan Plateau and its surrounding areas, to establish an integrated stratigraphic framework for correlation, and to reconstruct the paleogeography for correctly understanding the breakup of the Gondwana Continent and the evolution of the Paleo-Tethys Ocean in the Late Paleozoic. The Carboniferous of the Qinghai-Tibetan Plateau and its surrounding areas can be subdivided into the Gondwanan, Cimmerian, and Tethyan types. The Gondwanan-type Carboniferous are distributed in the North Himalayan, Kangmar-Lhunze, and Zanda-Zumba regions of the South Tibet Subprovince and northern India-Pakistan Area, where only the Mississippian is developed and the biota is of Gondwanan affinity. The Cimmerian-type Carboniferous, which are found in the Baoshan, Tengchong, Coqen-Xainza, LhasaZayu, Nagqu-Biru, and South Qiangtang regions, as well as Shan-Thai and South Afghanistan-Pamir areas, also represent only the Mississippian strata, but their biota is characterized by mixed characters of European, South China, Australian, and North American types. The Tethyan-type Carboniferous are distributed in the Tanggula Mountains, Hoh Xil-Bayanhar, ChamdoHengduanshan, Tiekelike, West Kunlun, Karakorum, East Kunlun-Central Qinling, and Qilian regions, where the Carboniferous succession is well developed, and the biota is of warm-water Tethyan affinity. The biostratigraphical correlation of the Gondwanan-type and Cimmerian-type Carboniferous is based mainly on conodonts and additionally on brachiopods and rugose corals. The Mississippian of the Tethyan-type Carboniferous is correlated mainly by using rugose corals and brachiopods,whereas in the Pennsylvanian foraminifera(fusuline) and conodonts are reg

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莫迪政府“领导型大国”战略与外交政策调整分析

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南亚研究季刊 2024年第2期 42-62,157页

作者：胡可怡曹德军中国人民大学国际关系学院

2014年以来,莫迪政府积极调整印度的外交实践,争做全球议程的制定者,既展现出对既有议程的延续与拓展,也愈发强调以自身利益为基准,行为模式更为务实自信,冒险主义和民族主义色彩更加显著。“领导型大国”战略的本质在于提升印度的全球... 详细信息

2014年以来,莫迪政府积极调整印度的外交实践,争做全球议程的制定者,既展现出对既有议程的延续与拓展,也愈发强调以自身利益为基准,行为模式更为务实自信,冒险主义和民族主义色彩更加显著。“领导型大国”战略的本质在于提升印度的全球“战略塑造能力”,包括抛弃“疑美主义”束缚;背靠“邻国优先”政策以重整区域主义;积极构建域外伙伴关系网络;重视对软实力资源的挖掘。这些政策调整提升了印度的全球大国地位,但国内发展障碍、大国地缘竞争等因素对其“领导型大国”愿景也产生显著冲击。另外,印美关系的潜在分歧与中印关系的不确定性,都将增加印度外交的战略压力。

关键词：领导型大国莫迪政府邻国优先印度教民族主义

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华南石炭纪中期白云岩地层分布及其形成模式

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地质学报 2024年第2期98卷 346-362页

作者：宋英凡王向东李莹史宇坤胡科毅黄兴盛青怡要乐内生金属矿床成矿机制研究国家重点实验室关键地球物质循环前沿科学中心南京大学地球科学与工程学院江苏南京210023 现代古生物学和地层学国家重点实验室中国科学院南京地质古生物研究所江苏南京210008

石炭纪是地质演化历史上重要的时期,发生了全球规模的海西造山运动,晚古生代大冰期(LPIA)达到峰值,全球海平面频繁波动,导致古气候和古环境的剧烈变化。在华南,石炭纪中期,浅水碳酸盐岩台地相区广泛发育一套白云岩沉积。本文系统总结华... 详细信息

石炭纪是地质演化历史上重要的时期,发生了全球规模的海西造山运动,晚古生代大冰期(LPIA)达到峰值,全球海平面频繁波动,导致古气候和古环境的剧烈变化。在华南,石炭纪中期,浅水碳酸盐岩台地相区广泛发育一套白云岩沉积。本文系统总结华南3个主要碳酸盐台地内白云岩的厚度及时代,识别出白云岩时空分布的差异性。结合石炭纪中期全球气候环境特征,认为冰期兴盛引发了全球海平面下降,导致华南各沉积盆地形成利于白云岩化的环境,白云岩得以发育。而白云岩时空分布的差异性可能与各沉积盆地独特的构造演化以及不同成岩模式有关。中下扬子碳酸盐岩台地白云岩的形成模式主要为萨勃哈模式和成岩早期浅埋藏的渗透回流模式,形成相对较薄的白云岩沉积;中南部和西南部碳酸盐岩台地白云岩的形成模式为渗透回流模式,成岩规模较大,沉积较厚。

关键词：石炭纪中期白云岩时空分布古环境白云岩化模式

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A Potential Global Standard Stratotype-Section and Point of the Moscovian Stage(Carboniferous)

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Acta Geologica Sinica(English Edition) 2011年第2期85卷 366-372页

作者： WANG Xiangdong QI Yuping Lance LAMBERT WANG Zhihao WANG Yue hu keyi LIN Wei CHEN Bo State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontologythe Chinese Academy of Sciences Nanjing Jiangsu 210008 China Department of Geological Sciences University of Texas at San Antonio San Antonio Texas 78249-0663 USA

Conodonts and fusulinids are the two most widely used biotic groups for subdividing and correlating Bashkirian and Moscovian strata. The definition of the base of the Global Moscovian Stage is undecided because there are many disagreements among existing boundary definition proposals,each of which has disadvantages. Declinognathodus donetzianus is easily recognized but somewhat limited in its paleogeographic distribution. Idiognathoides postsulcatus is slightly more widespread, but it is less easily identified and its occurrences may be diachronous from region to region. Diplognathodus ellesmerensis is easily recognized and even more widespread, but it is usually rare and its ancestry is not adequately known. The Naqing Section of South Guizhou, South China contains diverse conodont evolutionary lineages among different taxa, including Idiognathoides, Idiognathodus, Diplognathodus,Neognathodus, Gondolella and Mesogondolella. There are numerous transitional forms in almost every lineage of the Naqing section, which shows that the prospects for South China to play a critical role in determining the basal Moscovian Stage definition are good.

关键词： Bashkirian-Moscovian Boundary Global Standard Stratotype-Section and Point conodont fusulinid the Naqing Section of South Guizhou China

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Ammonia Fuel Ship Looks Near,But a Bit Far Further Ahead

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船舶经济贸易 2022年第2期 64-67页

作者： hu keyi CSSC Jiangnan Shipbuilding

It is not an easy task for ammonia fuel powered ship to truly achieve engineering approach and rommerrialization,as there is still a lot of work to he clone around the research and development and application of ammonia fuel power units,the innovation of containment systems,and the revision of regulations for ammonia as a marine fuel.

关键词： ammonia Ammonia truly

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Carboniferous integrative stratigraphy and timescale of China

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Science China Earth Sciences 2019年第1期62卷 135-153页

作者： Xiangdong WANG keyi hu Wenkun QIE Qingyi SHENG Bo CHEN Wei LIN Le YAO Qiulai WANG Yuping QI Jitao CHEN Zhuoting LIAO Junjun SONG CAS Key Laboratory of Economic Stratigraphy and Palaeogeography Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences Center for Research and Education on Biological Evolution and Environment Nanjing University Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology Chinese Academy of Sciences

The Carboniferous period lasted about 60 Myr, from ～358.9 Ma to ～298.9 Ma. According to the International Commission on Stratigraphy, the Carboniferous System is subdivided into two subsystems, i.e., Mississippian and Pennsylvanian, including 6 series and 7 stages. The Global Stratotype Sections and Points(GSSPs) of three stages have been ratified, the Tournaisian, Visean, and Bashkirian stages. The GSSPs of the remaining four stages(i.e., the Serpukhovian, Moscovian,Kasimovian, and Gzhelian) have not been ratified so far. This paper outlines Carboniferous stratigraphic subdivision and correlation on the basis of detailed biostratigraphy mainly from South China, and summarizes the Carboniferous chronostratigraphic framework of China. High-resolution biostratigraphic study reveals 37 conodont zones, 24 foraminiferal(including fusulinid) zones, 13 ammonoid zones, 10 brachiopod zones, and 10 rugose coral zones in the Carboniferous of China. The biostratigraphic framework based on these biozones warrants the precise correlation of regional stratigraphy of China(including2 subsystems, 4 series, and 8 stages) to that of the other regions globally. Meanwhile, the Carboniferous chemo-, sequence-,cyclo-, and event-stratigraphy of China have been intensively studied and can also be correlated worldwide. Future studies on the Carboniferous in China should focus on(1) the correlation between shallow-and deep-water facies and between marine and continental facies,(2) high-resolution astronomical cyclostratigraphy, and(3) paleoenvironment and paleoclimate analysis based on geochemical proxies such as strontium and oxygen isotopes, as well as stomatal indices of fossil plants.

关键词： Carboniferous Chronostratigraphy Biostratigraphy Chemostratigraphy Event stratigraphy Stratotype Stratigraphic correlation

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中国首艘VLGC的设计和建造

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中国造船 2014年第4期55卷 132-139页

作者：胡可一李小灵江南造船(集团)有限责任公司上海201913

通过对我国造船业首次涉足的VLGC船型的设计建造关键点进行识别,并运用先进的船舶研发设计手段和工具开展了相关研究工作。运用CFD辅助开展了船型的船体线型开发、优化,完成了复杂的破舱稳性分析;自行开发船体结构温度场分析软件和菱形... 详细信息

通过对我国造船业首次涉足的VLGC船型的设计建造关键点进行识别,并运用先进的船舶研发设计手段和工具开展了相关研究工作。运用CFD辅助开展了船型的船体线型开发、优化,完成了复杂的破舱稳性分析;自行开发船体结构温度场分析软件和菱形独立液舱强度分析软件,对菱形独立液舱的晃荡载荷及结构强度进行了评估,对菱形独立液舱支撑系统的作用原理进行了研究;利用FEM软件完成了船体+液舱+支撑的综合直接强度分析,对于液货系统及机电系统也进行了全方位的研究。由于VLGC建造的难度远大于设计的难度,因而在承接订单前开展了大量的建造研究工作,并在建造过程中通过建造了实际尺度的模拟舱从而系统地掌握了VLGC设计建造的关键技术。最终,成功地完成了83 000 m3 VLGC的设计建造技术研究,并相继获得了多批建造订单。

关键词： VLGC 设计建造

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37500m^3乙烯运输船C型罐的层压木受力分析

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中国造船 2018年第2期59卷 140-148页

作者：周清华胡可一陈兵江南造船(集团)有限责任公司上海201913

在设置有Type C双耳型液罐的液化气体运输船的研制中,液货舱支撑系统的设计和建造是一项关键技术。基于37500m3乙烯运输船层压木裂纹的监测数据,通过数值计算分析层压木本体在航行和下水两种状态下产生裂纹的原因及其影响。采用三维势... 详细信息

在设置有Type C双耳型液罐的液化气体运输船的研制中,液货舱支撑系统的设计和建造是一项关键技术。基于37500m3乙烯运输船层压木裂纹的监测数据,通过数值计算分析层压木本体在航行和下水两种状态下产生裂纹的原因及其影响。采用三维势流理论计算舱段模型在等效设计波载荷作用下的鞍座应力和层压木受力,并提出了一种适用于载船浮箱下水计算的混合模型分析方法。计算结果可为该支撑系统的优化设计提供技术支撑。

关键词：船舶、舰船工程乙烯运输船层压木裂纹 C型罐波浪载荷载船浮箱下水

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