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U-Pb zircon ages and petrogeochemistry and tectonic implications of gabbro and granite in southwest Lahad Datu area of Sabah, Malaysia

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Acta Oceanologica Sinica 2024年第2期43卷 94-110页

作者： Zhigang Zhao Wu Tang shixiang liu Huafeng Tang Pujun Wang Zhiwen Tian China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China College of Earth Sciences Jilin UniversityChangchun 130061China

The southwest Lahad Datu felsic rocks were previously thought to have formed in the late Triassic as part of the microcontinental crystalline *** on U-Pb ages,geochemistry,and the Hfisotopes of zircon from the southeastern Sabah gabbro and granite,in this study,the tectonic properties of the Sabah area during the Triassic were *** weighted average U-Pb zircon ages of the gabbro and granite samples were determined to be(230.9±2.5)Ma and(207.1±3.3)Ma,*** granite had SiO_(2) contents of 66.54%-79.47%,low TiO_(2) contents of 0.08%-0.3%,Al_(2)O_(3) contents of 10.97%-16.22%,Na_(2)O contents of 5.91 %-6.39%,and low K_(2)O contents of 0.15%-0.65%.The chondrite-normalized rare earth element(REE) patterns exhibit light REE enrichment,with right-sloping *** primitive mantle-normalized trace element spider diagrams exhibit Th,U,La,Sr,and Zr enrichment and Nb,Ta,P and Ti depletions,i.e.,the geochemical characteristics of typical island arc igneous *** tectonic discriminant diagram indicates that the granite is a volcanic arc *** Hf isotopic an alysis of gabbro zircon revealed that the zircons have ε_(Hf)(t)values of 12.08-16.24(mean of 14.32) and two-stage model ages(t_(DM2)) of 223-491 Ma(mean of 347 Ma).This indicates that the diagenetic magma of the gabbro was mainly derived from melting of newly formed crustal *** ophiolite in southeast Sabah has existed since the early Late *** crystalline basement granite in southeastern S abah was emplaced lasted from late Triassic to early *** on previous studies and global plate reconstruction models,it is speculated that the southeastern Sabah granite may have been formed in an island arc setting,i.e.,where the oceanic crust of the Paleo-Tethys Ocean collided with the oceanic crust of the Panthalassa Ocean.

关键词： Sabah early late Triassic ophiolite granite tectonic properties

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北极地区油气资源分布特征与开发利用分析

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极地研究 2024年第2期36卷 286-303页

作者：孙迪张厚和郝婧李春荣刘世翔蒋德鑫李易灿中海油研究总院有限责任公司北京100028

北极地区蕴藏着丰富的油气资源,对优化我国能源进口结构及有效分散石油进口风险具有重要意义。基于标普全球和美国地质调查局最新数据,本文开展了环北极主要国家油气勘探开发历程分析和北极地区油气资源时空分布特征分析。分析结果表明:... 详细信息

北极地区蕴藏着丰富的油气资源,对优化我国能源进口结构及有效分散石油进口风险具有重要意义。基于标普全球和美国地质调查局最新数据,本文开展了环北极主要国家油气勘探开发历程分析和北极地区油气资源时空分布特征分析。分析结果表明:(1)北极地区油气勘探开发工作主要在俄罗斯、美国、加拿大、挪威和丹麦五国开展,分为早期调查(至1963年)、陆上大发现和早期开发(1964-1976年)、海陆并进和快速上产(1977-1992年)、勘探低迷和开发高位徘徊(1993年至今)4个阶段。(2)北极地区已发现油气田519个,累计油气探明和控制可采储量474亿吨油当量,累计产量162亿吨油当量,待发现资源量1159亿吨油当量,呈现出油气构成不均、海陆分布不均、国别分布不均和层位分布不均的特点。基于对环北极国家油气开发利用情况和前景的综合考量,建议我国积极与俄罗斯开展天然气勘探开发合作,在夯实管道天然气开发建设进程的基础上,拓展液化天然气和北极航道基础设施建设合作领域。

关键词：油气资源分布特征开发利用俄罗斯北极地区

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Differences in the Tectonic Evolution of Basins in the CentralSouthern South China Sea and their Hydrocarbon Accumulation Conditions

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Acta Geologica Sinica(English Edition) 2021年第1期95卷 30-40页

作者： TANG Wu ZHAO Zhigang SONG Shuang WANG Yibo XIE Xiaojun liu shixiang CNOOC Research Institute Co. Ltd.Beijing 100028China

To reveal the causes of differences in the hydrocarbon accumulation in continental marginal basins in the centralsouthern South China Sea,we used gravity-magnetic,seismic,drilling,and outcrop data to investigate the tectonic histories of the basins and explore how these tectonic events controlled the hydrocarbon accumulation conditions in these *** the subduction of the Cenozoic proto-South China Sea and the expansion of the new South China Sea,the continental margin basins in the central-southern South China Sea could be classified as one of three types of epicontinental basins:southern extensional-foreland basins,western extensional-strike slip basins,and central extensional-drift *** these basins have different tectonic and sedimentary histories,they also differ in their accumulated hydrocarbon *** the Cenozoic,the basin groups in the southern South China Sea generally progressed through three stages:faulting and subsidence from the late Eocene to the early Miocene,inversion and uplift in the middle Miocene,and subsidence since the late *** source rocks with marine-continental transitional facies dominated byⅡ-Ⅲkerogen largely developed in extremely thick Miocene sedimentary series with the filling characteristics being mainly deep-water deposits in the early stage and shallow water deposits in the late *** well-developed sandstone and carbonate reservoirs,this stratum has a strong hydrocarbon generation *** the Cenozoic,the basin groups in the western South China Sea also progressed through the three developmental stages discussed *** source rocks with lacustrine facies,marine-continental transitional facies,and terrigenous marine facies dominated byⅡ2-Ⅲkerogen largely developed in the relatively thick stratum with the filling characteristics being mainly lacustrine deposits in the early stage and marine deposits in the late *** a reservoir comprised of self-generated a

关键词： tectonic evolution hydrocarbon accumulation continental margin central-southern South China Sea proto-South China Sea

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生物炭添加对干旱胁迫下福建柏幼苗生理特性与土壤酶活性的影响

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福建农业学报 2024年第7期39卷 794-800页

作者：刘世祥蔡星吴文秀刘晓颖荣俊冬郑郁善陈礼光福建农林大学林学院福建福州350002

【目的】探究干旱胁迫下外源增施生物炭对福建柏苗木生理特性与土壤酶活性的影响。【方法】以一年生福建柏幼苗为试材,在土壤中分别添加20、50、80 g·kg^(-1)的玉米秸秆生物炭(T1、T2、T3),以不含生物炭处理为对照(CK),分析不同添加量... 详细信息

【目的】探究干旱胁迫下外源增施生物炭对福建柏苗木生理特性与土壤酶活性的影响。【方法】以一年生福建柏幼苗为试材,在土壤中分别添加20、50、80 g·kg^(-1)的玉米秸秆生物炭(T1、T2、T3),以不含生物炭处理为对照(CK),分析不同添加量生物炭对干旱胁迫下福建柏幼苗生长、渗透调节物质的积累及土壤酶活性的影响。【结果】(1)生物炭的施加显著提升了福建柏的生长及生物量积累(PT1>T3>CK,且以T2处理效果最佳。T2处理的可溶性糖、可溶性蛋白、脯氨酸含量与同期的CK相比增加了50.7%、127%、54.4%。(3)生物炭的施加显著提升了干旱胁迫下的土壤酶活性(PT1>T3>CK,且以T2处理最佳。【结论】干旱胁迫下施用50 g·kg^(-1)生物炭量的试验处理最有利于福建柏苗木生长、抗逆生理及土壤酶活性的提高,生物炭施用量过高时会对其产生抑制作用。

关键词：生物炭干旱胁迫福建柏土壤酶活性渗透调节

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Acyl-chloride functionalized graphene oxide chemically grafted with hindered phenol and its application in anti-degradation of polypropylene

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Progress in Natural Science:Materials International 2020年第3期30卷 328-336页

作者： Jialu Yao shixiang liu Yajiang Huang Shijie Ren Yadong Lv Miqiu Kong Guangxian Li College of Polymer Science and Engineering State Key Laboratory of Polymer Materials Engineering of China Sichuan University

In this study,graphene oxide (GO) nanosheets were first functionalized by the acyl-chloride reaction and then reacted with hindered phenol (HP) to obtain HP grafted GO (GO-g-HP).The GO-g-HP prepared under the optimized condition exhibited a high efficiency against both thermal and photo oxidation of isotactic polypropylene (iPP).GO-g-HP exhibited a much better anti-aging efficiency than that of HP and GO used individually or that of their physical *** outstanding anti-aging effect of GO-g-HP was attributed to the excellent synergistic effect produced between the chemically bonded GO and HP,which resulted in an improved oxygen barrier property of GO and excellent utilization of the free radical scavenging capability of GO and ***,thanks to the grafting of HP on GO,the physical loss of HP,which was one of the main shortcomings for traditional small molecular antioxidants,was largely *** is expected that the GO-g-HP prepared can well meet the requirement of long-term applications of polymers in some harsh service conditions.

关键词： Graphene oxide Hindered phenols Polypropylene Thermal oxidation Photo oxidation

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Hydrocarbon accumulation in the deep waters of South China Sea controlled by the tectonic cycles of marginal sea basins

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Petroleum Research 2016年第1期1卷 39-52页

作者： Gongcheng Zhang Hongjun Qu shixiang liu Xiaojun Xie Zhao Zhao Huailei Shen CNOOC Research Institute Beijing 100028China Department of Geology Northwest UniversityXi’an 710069China

The tectonic cycle of the marginal sea basins in South China Sea(SCS)includes two cycles,i.e.,the formation and contraction of Palaeo-SCS and *** northern part of SCS is a rift basin on a passive continental margin,while the the Nansha Block is a drifting rift *** southern part is a compound compressional basin on an active continental margin;the western part is a shear-extensional basin on a transform continental margin;the eastern part is an accretionary wedge basin on a subduction continental *** deep-water basins are mainly distributed on the continental slope and the the Nansha *** are three sets of source rocks in the deep-water areas of the northern continental margin in SCS,i.e.,Eocene terrestrial facies,early Oligocene transitional facies and late Oligocene marine facies.A set of Late Cretaceous-Early Oligocene terrestrial marine facies source rocks are developed in the drift-rift basin of *** sets of Oligocene,early Miocene and Mid-Miocene marine-terrestrial transitional facies source rocks are developed in the deep-water areas of both the southern and western continental margins of *** sets of reservoirs developed in the northern deep waters of SCS are dominated by deep sea *** sets of reservoirs developed in the the Nansha Block are dominated by delta and biogenic *** southern part of SCS is dominated by deep sea fan and biogenic *** of large channels and other clastic facies were developed in front of the estuaries,while biogenic reef bank was formed in the uplift *** hydrocarbon accumulation assemblages are mainly presented as Oligocene-Pliocene in the deep waters on the northern continental margin of SCS,Eocene-Lower Oligocene in the the Nansha Block,Oligocene-Pliocene and Oligocene-Miocene in the deep waters on the southern and western continental margin of SCS,*** major hydrocarbon reservoir types in the deep waters of SCS are related to structural traps,deep water fans

关键词： tectonic cycles,marginal sea basins deep water area reservoir assemblages South China Sea

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The gradual subduction-collision evolution model of Proto-South China Sea and its control on oil and gas

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Acta Oceanologica Sinica 2023年第3期42卷 123-137页

作者： Xiaojun Xie Wu Tang Gongcheng Zhang Zhigang Zhao Shuang Song shixiang liu Yibo Wang Jia Guo China National Offshore Oil Corporation(CNOOC)Research Institute Co. Ltd.Beijing 100028China

This study involved outcrop,drilling,seismic,gravity,and magnetic data to systematically document the geological records of the subduction process of Proto-South China Sea(PSCS)and establish its evolution *** results indicate that a series of arc-shaped ophiolite belts and calcalkaline magmatic rocks are developed in northern Borneo,both of which have the characteristics of gradually changing younger from west to east,and are direct signs of subduction and collision of *** the same time,the subduction of PSCS led to the formation of three accretion zones from the south to the north in Borneo,the Kuching belt,Sibu belt,and Miri *** sedimentary formation of northern Borneo is characterized by a three-layer structure,with the oceanic basement at the bottom,overlying the deep-sea flysch deposits of the Rajang–Crocker group,and the molasse sedimentary sequence that is dominated by river-delta and shallow marine facies at the top,recording the whole subduction–collision–orogeny process of ***,seismic reflection and tomography also confirmed the subduction and collision of *** on the geological records of the subduction and collision of PSCS,combined with the comprehensive analysis of segmented expansion and key tectonic events in the South China Sea,we establish the“gradual”subduction-collision evolution model of *** the late Eocene to middle Miocene,the Zengmu,Nansha,and Liyue–Palawan blocks were separated by West Baram Line and Balabac Fault,which collided with the Borneo block and Kagayan Ridge successively from the west to the east,forming several foreland basin systems,and PSCS subducted and closed from the west to the *** subduction and extinction of PSCS controlled the oil and gas distribution pattern of southern South China Sea(SSCS)mainly in three ***,the“gradual”closure process of PSCS led to the continuous development of many large deltas in ***,the deltas formed during the subduction–collision of PS

关键词： Proto-South China Sea gradual subduction-collision evolution model oil and gas distribution southern South China Sea Borneo

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The geological characteristics of the large-and medium-sized gas fields in the South China Sea

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Acta Oceanologica Sinica 2021年第2期40卷 1-12页

作者： Gongcheng Zhang Dongdong Wang Lei Lan shixiang liu Long Su Long Wang Wu Tang Jia Guo Rui Sun College of Earth Science and Engineering Shandong University of Science and TechnologyQingdao 266590China CNOOC Research Institute Co. Ltd.Beijing 100028China Northwest Institute of Eco-Environment and Resources Chinese Academy of SciencesLanzhou 730000China Key Laboratory of Petroleum Resources Gansu ProvinceLanzhou 730000China

By the end of 2019,more than 220 gas fields had been discovered in the South China *** order to accurately determine the geological characteristics of the large-and medium-sized gas fields in the South China Sea,this study conducted a comprehensive examination of the gas *** on the abundant available geologic and geochemical data,the distribution and key controlling factors of the hydrocarbon accumulation in the South China Sea were *** geological and geochemical features of the gas fields were as follows:(1)the gas fields were distributed similar to beads in the shape of a"C"along the northern,western,and southern continental margins;(2)the natural gas in the region was determined to be composed of higher amounts of alkane gas and less CO2;(3)the majority of the alkane gas was observed to be coal-type gas;(4)the gas reservoir types included structural reservoirs,lithologic reservoirs,and stratigraphic reservoirs,respectively;(5)the reservoir ages were mainly Oligocene,Miocene,and Pliocene,while the lithology was mainly organic reef,with some sandstone deposits;and(6)the main hydrocarbon accumulation period for the region was determined to be the late Pliocene-Quaternary *** addition,the main controlling factors of the gas reservoirs were confirmed to have been the development of coal measures,sufficient thermal evolution,and favorable migration and accumulation conditions.

关键词： coal-type gas coal measures thermal evolution hydrocarbon traps organic reefs South China Sea

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献血者HBVs基因变异的生物信息学分析

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中国输血杂志 2024年第8期37卷 933-939页

作者：范加诚李青陈秀丽刘世香陈烨泰安市中心血站山东泰安271000

目的分析HBV DNA+/HBsAg-献血者的传染性指标、S区基因序列突变情况及生物信息学特征变化。方法通过PCR方法筛查出1份HBV DNA+/HBsAg-的标本,应用酶联免疫和化学发光方法检测该标本乙肝病毒5项指标,对该标本HBVs区基因片段测序并分析变... 详细信息

目的分析HBV DNA+/HBsAg-献血者的传染性指标、S区基因序列突变情况及生物信息学特征变化。方法通过PCR方法筛查出1份HBV DNA+/HBsAg-的标本,应用酶联免疫和化学发光方法检测该标本乙肝病毒5项指标,对该标本HBVs区基因片段测序并分析变异情况,应用分析软件对所测序列进行生物信息学分析。结果该标本HBV DNA+、HBsAg-、HBsAb+、HBeAg+、HBeAb-、HBcAb+;HBVs区基因序列内发生氨基酸单位点突变(P151L),空间结构发生改变。结论HBVs区基因序列空间结构改变,可能是导致检测结果出现血清学HBsAg-/HBsAb+/HBV DNA+的原因。

关键词： HBV OBI s基因献血者生物信息学

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RAPID THERMAL ANNEALING OF As ION IMPLANTED SILICON

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中国科学院研究生院学报 1989年第1期6卷 61-63页

作者： liu shixiang liu Xuejun Shi Wanquan (Graduate School,USTC,Academia Sinica)

As ion implanted damage of silicon was removed by Rapid ThermalAnnealing(RTA)using Model KST-1 RTA *** ofdamage and dopant redistribution were investigated by RutherfordBackscattering Spectra(RBS)and Extended *** resi... 详细信息

关键词： implanted RAPID annealing dopant removed redistribution heating wafer Rutherford negligible

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