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Features and dynamic mechanisms of Cenozoic tectonic migration and its impact on the hydrocarbon accumulation in the northern South China Sea

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Acta Oceanologica Sinica 2015年第1期34卷 100-109页

作者： yin zhengxin CAI Zhourong WAN Zhifeng LYU Baofeng School of Marine Sciences Sun Yat-sen University Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes

The northern continental margin of the South China Sea （SCS） is located within the tectonic system of Southeast Asia, an area with a great deal of tectonic migration due to the regional tectonic movements. The available geological and geophysical data of the area are comprehensively analyzed in order to demonstrate the typical migration patterns of the Cenozoic tectonics in the northern SCS caused by the episodes of the Cenozoic tectonic movement. Furthermore, the lateral variation characteristics of the strata and the differ- ent evolution patterns of the main basins＇ features are assessed. It primarily focus on：（1） the Cenozoic epi- sodic rifting from north to south in the continental margin of the northern SCS; （2） the rifting and depression time of the main basins progressively become younger as one goes from north to south, signifying that the migration of both the tectonics and the sediments within the northern SCS travelled from north to south during the Cenozoic; and （3） the lateral tectonic migration on the direction of EW is not regular in total, but in some local areas the trending of the tectonic migration is from west to east. The analysis of the tectonic migration features of the northern SCS, in combination with the regional tectonic evolution background, indicates that the observed remote lagging effect, resulted from the India-Eurasia plate collision, is the main dynamic mechanism involved in the tectonic migration within the northern SCS. The tectonic migration has significant influence on both the organization of petroleum deposits and on the hydrocarbon accumulation within the basins in the northern SCS; comprehensive understanding of this dynamic system is of great reference value in predicting the hydrocarbon accumulation and has the potential to have an enormous impact in discovering new deep reservoirs for the future oil-gas exploration.

关键词： tectonic migration Cenozoic hydrocarbon accumulation northern South China Sea

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Tectonic unit divisions based on block tectonics theory in the South China Sea and its adjacent areas

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Acta Oceanologica Sinica 2021年第9期40卷 33-42页

作者： zhengxin yin Zhourong Cai Cheng Zhang Xiaofeng Huang Qianru Huang Liang Chen South China Sea Marine Survey and Technology Center State Oceanic AdministrationGuangzhou 510275China School of Marine Sciences Sun Yat-sen UniversityZhuhai 519082China Southern Laboratory of Ocean Science and Engineering(Zhuhai) Zhuhai 519082China Key Laboratory of Marine Environmental Survey Technology and Application Ministry of Natural ResourcesGuangzhou 510275China

Identifying distinct tectonic units is key to understanding the geotectonic framework and distribution law of oil and gas *** South China Sea and its adjacent areas have undergone complex tectonic evolution processes,and the division of tectonic units is *** by block tectonics theory,this study divide the South China Sea and its adjacent areas into several distinguished tectonic units relying on known boundary markers such as sutures(ophiolite belts),subduction-collision zones,orogenic belts,and deep *** work suggests that the study area is occupied by nine stable blocks(West Burma Block,Sibumasu Block,LanpingSimao Block,Indochina Block,Yangtze Block,Cathaysian Block,Qiongnan Block,Nansha Block,and Northwest Sulu Block),two suture zones(Majiang suture zone and Southeast Yangtze suture zone),two accretionary zones(Sarawak-Sulu accretionary zone and East Sulawesi accretionary zone),one subduction-collision zone(RakhineJava-Timor subduction-collision zone),one ramp zone(Philippine islands ramp zone),and six small oceanic marginal sea basins(South China Sea Basin,Sulu Sea Basin,Sulawesi Sea Basin,Banda Sea Basin,Makassar Basin,and Andaman Sea Basin).This division reflects the tectonic activities,crustal structural properties,and evolutionary records of each evaluated tectonic *** is of great theoretical and practical importance to understand the tectonic framework to support the exploration of oil and gas resources in the South China Sea and its adjacent areas.

关键词： South China Sea block tectonics tectonic units suture zone

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Numerical investigation on the flow characteristics of a reverse-polarity plasma torch by two-temperature thermal non-equilibrium modelling

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Plasma Science and Technology 2021年第9期23卷 86-101页

作者： zhengxin yin Deping YU Yana WEN Qingbo ZHANG Jier QIU Shengyuan YANG School of Mechanical Engineering.Sichuan University Chengdu 610065People's Republic of China

A two-temperature(2 T)thermal non-equilibrium model is developed to address the thermal nonequilibrium phenomenon that inevitably exists in the reverse-polarity plasma torch(RPT)and applied to numerically investigate the plasma flow characteristics inside and outside the ***,a detailed comparison of the results of the 2 T model with those of the local thermal equilibrium(LTE)model is ***,the temperature of the plasma jet generated by a RPT and the RPT’s voltage are experimentally measured to compare and validate the result obtained by different *** differences of the measured excitation temperature and the arc voltage between the 2 T model and experimental measurement are less than 13%and 8%,respectively,in all operating cases,validating the effectiveness of the 2 T *** LTE model overestimates the velocity and temperature distribution of the RPT and its plasma jet,showing that thermal non-equilibrium phenomena cannot be neglected in the numerical modelling of the *** other common hot cathode plasma torches,the thermal non-equilibrium phenomenon is found even in the arc core of the RPT,due to the strong cooling effect caused by the big gas flow rate.

关键词： optical emission spectroscopy reverse-polarity plasma torch temperature measurement two-temperature thermal non-equilibrium modelling

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Tectonic Evolution of the Meso-Tethys in the Western Segment of Bangonghu-Nujiang Suture Zone: Insights from Geochemistry and Geochronology of the Lagkor Tso Ophiolite

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Acta Geologica Sinica(English Edition) 2015年第2期89卷 369-388页

作者： YUAN Yajuan yin zhengxin LIU Weiliang HUANG Qiangtai LI Jianfeng LIU Hongfei WAN Zhifeng CAI Zhourong XIA Bin School of Marine Sciences Sun Yat-sen University Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes Guangzhou Institute of Geochemistry Chinese Academy of Sciences Xizang Geological Survey

The subduction of the Bangonghu-Nujiang Meso-Tethys and the collision between the Lhasa and Qiangtang blocks were important events in the growth of the Tibetan crust. However, the timing of collision initiation and closure timing, as well as nature and structure of the Bangonghu ocean basin, are still poorly constrained. The Lagkor Tso ophiolite, located in the south of Gerze County, Tibet, is one of the most completed ophiolites preserved in the southern side of the Bangonghu- Nujiang suture zone. This study discussed the tectonic evolution of the Bangonghu-Nujiang suture zone as revealed by the Lagkor Tso ophiolite investigated by field investigations, petrology, geochemistry, geochronology and tectonic analysis methods. We present new LA-ICP-MS zircon U-Pb and 39Ar/4~Ar ages for the Lagkor Tso ophiolite, in addition to geochemical and platinum-group element （PGE） data presented for the Lagkor Tso ophiolite in Tibet. It is suggested that the ancient Lagkor Tso oceanic basin split in Middle Jurassic （161.2 ± 2.7 Ma - 165.4 ± 3.5 Ma）, and experienced a second tectonic emplacement during the Early Cretaceous （137.90 ± 6.39 Ma）. The Lagkor Tso ophiolite likely developed in an independent suture zone. The Bangonghu-Nujiang ocean subducted southwards, and the dehydration of the subducting oceanic crust materials caused partial melting of the continental mantle wedge, which formed the second-order expanding center of the obduction dish. This led to inter-arc expansion, followed by the formation of inter-arc and back-arc basins with island arc features, which are represented by ophiolites around the Shiquanhe-Lagkor Tso -Yongzhu region. The tectonic environment presently can be considered to be similar to that of the current Western Pacific, in which a large number of island arc-ocean basin systems are developed.

关键词： ophiolite geochemistry geochronology inter-arc basin Lagkor Tso Bangonghu-Nujiangsuture zone

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Zircon U-Pb Geochronology and Hf Isotopic Constraints on Petrogenesis of Plagiogranite from the Cuomuqu Ophiolite,Bangong Lake Area,North Tibet

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Acta Geologica Sinica(English Edition) 2015年第2期89卷 418-440页

作者： yin zhengxin YUAN Yajuan Lü Baofeng CAI Zhourong ZHENG Hao HUANG Qiangtai XIA Bin ZHONG Yun XIA Zhongyu SHI Xiaolong GUAN Yao School of Marine Sciences Sun Yat-sen University Key Laboratory of Offshore Oil Exploration and Development of Guangdong Higher Education Institutes Guangdong Provincial Key Laboratory of Marine Resources and Coastal Engineering

Field observation, geochemical signatures and zircon Hf isotope data indicate that Cuomuqu ophiolite in the Bangonghu area was formed in a back-arc basin （BAB） above a supra- subduction zone （SSZ）. Zircon U-Pb dating of the diabase from the Cuomuqu massif yielded an age of 164.3±1.9 Ma, thus indicating that the ophiolite complex was formed in the Middle Jurassic during back-arc extension of the mature Bangonghu-Nujiang Ocean. The zircon εHf（t） and TDMC values of the plagiogranite are similar to the εHf（t） and TDM of the diabase, respectively. The mode of occurrence of plagiogranites and their bulk-rock and Hf isotope characteristics indicate that they were derived from the mantle, associated with the surrounding gabbro and diabase, and were formed by partial melting of altered and hydrated mafic rocks under shear conditions during lateral drifting of the oceanic crust. The zircon U-Pb age of the plagiogranite is 156.4±1.4 Ma, and it is 7.9 Ma younger than the hosting diabase. In this study, zircon chronological and Hf isotopic data were tentatively analyzed to determine the genesis of plagiogranites in the Cuomuqu ophiolite complex.

关键词： Bangonghu-Nujiang suture zone ophiolite plagiogranite zircon U-Pb dating zircon Hf isotope tectonic setting

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“中布容事件”时南极底层流在马里亚纳海沟南部的沉积记录

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沉积学报 2023年第4期41卷 1002-1010页

作者：陈亮刘紫荆殷征欣唐盟国家海洋局南海调查技术中心广州510300 自然资源部海洋环境探测技术与应用重点实验室广州510300

对马里亚纳海沟南部的柱状样品进行了涂片粒度、岩心扫描(XRF)、古地磁及磁化率各向异性分析。古地磁分析结果表明,该柱底部507 cm处发生了倒转事件(B/M界限),表明该柱至少记录了78万年以来的沉积环境演变,通过对古地磁相对强度及倾角... 详细信息

对马里亚纳海沟南部的柱状样品进行了涂片粒度、岩心扫描(XRF)、古地磁及磁化率各向异性分析。古地磁分析结果表明,该柱底部507 cm处发生了倒转事件(B/M界限),表明该柱至少记录了78万年以来的沉积环境演变,通过对古地磁相对强度及倾角长期变化分析建立了该柱布容时期以来年代框架。涂片粒度分析及XRF扫描结果均显示,该柱样沉积物类型自底部到顶部发生了根本性转变,底部以代表陆源输入的远洋黏土为主,上部以代表生源作用的硅质软泥为主,分析认为造成这种变化的主要原因在于中布容事件(MBE)时南极底层水(AABW)对该区域的影响。结合沉积物类型、磁化率各向异性及古地磁年代学分析,认为中布容事件对该柱样所在区域的影响始于约553 ka,南极底层流开始影响该区域,沉积物类型由陆源向生源转变;到约417 ka时,沉积物类型主要成分已完成由陆源向生源转变,之后,南极底层流进一步增强;到约336 ka时,沉积物类型几乎全由硅质软泥主导,且之后不再发生较大变化,表明MBE对该区域影响的结束。

关键词：中布容事件南极底层流马里亚纳海沟南部深海沉积

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西太平洋卡罗琳海域沉积速率:来自3种测年方法的限定

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海洋学报 2022年第6期44卷 80-88页

作者：陈亮殷征欣刘紫荆唐盟国家海洋局南海调查技术中心广东广州510300 自然资源部海洋环境探测技术与应用重点实验室广东广州510300

为了更好地认识西太平洋暖池区北部卡罗琳海域沉积速率的变化,利用放射性碳测试(14C)、氧同位素及古地磁方法对采自西太平洋卡罗琳地区一根长217 cm的柱状样开展了综合年代学分析。14C数据获取了样品上部44.3 ka BP以来的年代数据,在此... 详细信息

为了更好地认识西太平洋暖池区北部卡罗琳海域沉积速率的变化,利用放射性碳测试(14C)、氧同位素及古地磁方法对采自西太平洋卡罗琳地区一根长217 cm的柱状样开展了综合年代学分析。14C数据获取了样品上部44.3 ka BP以来的年代数据,在此基础上利用氧同位素及古地磁相对强度数据建立了该柱125 cm至表层的年代框架,对应为MIS4期(约8万年)以来的沉积。进一步分析发现本柱在126~127 cm处存在明显沉积间断,虽然该处已超出^(14)C测年范围,但古地磁测试结果表明该柱位于布容正极性时期,同时古地磁强度与氧同位素的变化关系为沉积间断以下年代数据获取提供了可信的证据,表明该阶段对应距今13万年至18万年时期。本柱沉积速率在沉积间断前后均较为一致,为1~2 cm/ka。同时对比不同方法获取的沉积速率之间差异后,发现个别层位可能由于较高的有孔虫破壳率,导致14C值存在较大偏差。

关键词： ^(14)C 氧同位素古地磁沉积速率西太平洋

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南海北部新生代构造演化序列及其油气成藏意义

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地质学报 2012年第8期86卷 1249-1261页

作者：吕宝凤殷征欣蔡周荣万志峰中山大学海洋学院广东普通高校海洋石油勘探开发重点实验室广州510006

本文从构造地质学的基本理论出发,在综合分析板块作用、壳幔作用、岩浆热事件、构造变形、沉积作用等地质作用特点及其相互印证与制约关系的基础上,梳理了南海北部新生代主要构造事件和构造演化序列,提出受欧亚、印澳、太平洋3大板块的... 详细信息

本文从构造地质学的基本理论出发,在综合分析板块作用、壳幔作用、岩浆热事件、构造变形、沉积作用等地质作用特点及其相互印证与制约关系的基础上,梳理了南海北部新生代主要构造事件和构造演化序列,提出受欧亚、印澳、太平洋3大板块的共同影响,南海北部新生代主要构造运动划分为礼乐运动、西卫运动一幕、西卫运动二幕、南海运动、南沙运动5次较为合适。其中礼乐运动使南海北部进入裂陷发展阶段,并产生NE走向小型断陷;西卫运动一幕使断陷进一步扩展;西卫运动二幕使南海北部由断陷向断坳转变,断陷走向向NEE向转变;南海运动使南海北部进入坳陷发展阶段;南沙运动使南海北部进入差异性区域沉降阶段,构造格局基本形成。南海北部这种构造演化序列造就了前古近系、古近系、新近系3层含油气结构层系及始新统湖相、渐新统湖相—湖沼相及海陆过渡相和中新统海相3套烃源岩,围绕3套烃源岩可形成"上生下储上盖"、"自生自储自盖"与"下生上储上盖"3类成藏组合和背斜、古潜山、地层-岩性等多种类型的油气藏及其复式油气聚集带。

关键词：南海北部新生代构造演化序列油气成藏要素复式油气聚集带

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中建南盆地后扩张期T_(5)和T_(3)不整合面的发育特征及对南海科学钻探的意义

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地质学报 2022年第8期96卷 2822-2832页

作者：王伟平姚永坚蔡周荣殷征欣朱荣伟尉建功鞠东自然资源部海洋环境探测技术与应用重点实验室国家海洋局南海调查技术中心广东广州510300 南方海洋科学与工程广东省实验室(广州) 广东广州511458 自然资源部海底矿产资源重点实验室中国地质调查局广州海洋地质调查局广东广州510075 中山大学海洋科学学院广东珠海519082

中建南盆地是位于南海西部陆缘的一个走滑拉张型盆地,具有南海北部张裂和西部走滑的双重构造特征,盆地发育新生界多个区域不整合面,对于研究盆地的沉积-构造演化史、油气资源以及南海的形成过程都具有重要意义。本文通过收集越南钻井约... 详细信息

中建南盆地是位于南海西部陆缘的一个走滑拉张型盆地,具有南海北部张裂和西部走滑的双重构造特征,盆地发育新生界多个区域不整合面,对于研究盆地的沉积-构造演化史、油气资源以及南海的形成过程都具有重要意义。本文通过收集越南钻井约束,对广州海洋地质调查局的深反射地震剖面进行了重新解译,标定南海扩张结束后(中中新世以来)T_(5)和T_(3)两个区域不整合面的地质属性,结合区域构造运动分析,认为:T_(5)不整合面形成于南海海底扩张停止时期的碰撞不整合面,对应于红河-南海西缘断裂带从左旋运动到右旋运动的过渡期,时代为15 Ma,地震剖面揭示该界面总体的构造活动不强烈,推测沙巴造山运动在中建南盆地的响应已大幅减弱。T_(3)不整合面对应于区域性重要板块重组事件和全球海平面快速下降的构造转换面,与红河-南海西缘断裂带右旋走滑密切相关,时代为11.6 Ma,地震剖面显示该界面具有明显的剥蚀削截特征,同时是南海西部大规模碳酸盐岩、水道和扇体开始发育的重要时期,推测为南沙运动或万安运动在盆地内强烈作用的结果。研究表明,南海后扩张期表现出强烈构造活动及沉积响应的差异,通过未来大洋钻探,可明确南海西部T_(5)、T_(3)两个区域不整合面的空间变化特征和区域动力学环境,为认识南海西缘断裂带对西部沉积盆地群成因机制以及油气分布的控制作用提供依据。

关键词：中建南盆地南海不整合面构造演化科学钻探

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融媒体背景下襄阳地方文化类文创品牌构建策略研究

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艺术科技 2022年第11期35卷 170-172,176页

作者：向菲殷政鑫湖北工业大学艺术设计学院湖北武汉430068

融媒体时代,品牌传播呈现出全新的特征,具体表现为碎片化传播、精准化传播等。在此背景下,地方文创品牌发展也面临着全新的机遇与挑战。文章以襄阳地方文化类文创品牌为例,研究融媒体背景下地方文化类文创品牌的构建。

关键词：融媒体地方文化文创品牌

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