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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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渤海湾盆地莱州湾凹陷南斜坡中生界火山岩相模式和储层特征

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地质学报 2024年第6期98卷 1814-1828页

作者：王海峰户景松邹明倬何明薇王庶丞唐华风中海油研究总院有限责任公司北京100028 吉林大学地球科学学院吉林长春130061

精细岩相模式是油气藏研究的重要基础,为储层预测和评价提供合理的约束。目前火山岩还缺少微相尺度的相模式。参照的5相15亚相分类方案,在莱州湾凹陷南斜坡中生界火山地层中建立了相—亚相—微相划分方案,识别出3相4亚相10微相。具体为... 详细信息

精细岩相模式是油气藏研究的重要基础,为储层预测和评价提供合理的约束。目前火山岩还缺少微相尺度的相模式。参照的5相15亚相分类方案,在莱州湾凹陷南斜坡中生界火山地层中建立了相—亚相—微相划分方案,识别出3相4亚相10微相。具体为爆发相的热碎屑流亚相和热基浪亚相,细分为火山口-近火山口、近源和远源微相。喷溢相熔岩流亚相,细分为简单熔岩流和碎屑堆积微相。火山-沉积相崩塌再搬运堆积亚相,细分为再搬运块状堆积和基质堆积微相。钻井揭示研究区的亚相占比从高到低的顺序为爆发相热基浪亚相、喷溢相熔岩流亚相、爆发相热碎屑流亚相和火山-沉积相崩塌再搬运堆积亚相。火山地层具有复杂岩相叠置关系,亚相单元横向延伸范围有限、对比难度大。储层孔渗条件由好到差的顺序为热基浪亚相、热碎屑流亚相、熔岩流亚相和崩塌再搬运堆积亚相。热基浪亚相近源微相、热碎屑流亚相近源微相、熔岩流亚相简单熔岩流微相上部、崩塌再搬运亚相块状堆积微相的储层较好;其中,热基浪亚相近源微相储层条件为最优。本研究可为火山岩储层预测和评价提供地质依据。

关键词：火山岩相相模式火山岩储层中生界渤海湾盆地

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基于岩浆汇聚区和上升通道特征的火山岩分布规律——以松辽盆地长岭断陷下白垩统营城组为例

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吉林大学学报（地球科学版） 2024年第2期54卷 429-446页

作者：胡佳王丽丽王立贤韩昊天陶鹏唐华风中国石油吉林油田分公司地球物理勘探研究院吉林松原138000 吉林大学地球科学学院长春130061

关于断陷尺度火山岩充填规律的全面认识,需要从深部岩浆汇聚区开始,到输导体系,再到其喷发分散,进行统一分析;但在研究过程中往往还是以单项分析为主,导致火山岩分布规律的认识不够全面。为了深入分析断陷盆地火山岩分布的规律,利用钻... 详细信息

关于断陷尺度火山岩充填规律的全面认识,需要从深部岩浆汇聚区开始,到输导体系,再到其喷发分散,进行统一分析;但在研究过程中往往还是以单项分析为主,导致火山岩分布规律的认识不够全面。为了深入分析断陷盆地火山岩分布的规律,利用钻井、地震资料和已有的深部结构研究成果,开展松辽盆地长岭断陷下白垩统营城组火山岩岩浆汇聚区和上升通道对火山岩分布特征的控制作用分析。取得如下认识:营城组火山岩在平面上呈现东西分带和南北分块的特征,在中央洼陷带集中分布;水平断距是火山岩是否发育的敏感参数,垂直断距对火山岩厚度影响更显著;断裂仅是火山岩发育的必要条件,非充分条件;火山岩分布还受软流圈上拱和地壳伸展减薄区域的约束;断陷盆地火山岩充填往往与沉降中心对应,当火山岩体积较小时烃源岩可以与火山岩组成好的生储组合,而当火山岩体积过大时会显著减少细粒沉积岩的沉积空间,不利于烃源岩在空间上延伸。

关键词：火山岩分布规律控制因素营城组白垩系松辽盆地

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Tectonic Evolution and Key Geological Issues of the ProtoSouth China Sea

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Acta Geologica Sinica(English Edition) 2021年第1期95卷 77-90页

作者： TIAN Zhiwen tang Wu WANG Pujun ZHAO Zhigang SUN Xiaomeng tang huafeng Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Land and ResourcesChangchun 130061China College of Earth Sciences Jilin UniversityChangchun 130061China CNOOC Research Institute Co. Ltd.Beijing 100028China

There are numerous controversies surrounding the tectonic properties and evolution of the Proto-South China Sea(PSCS).By combining data from previously published works with our geological and paleontological observations of the South China Sea(SCS),we propose that the PSCS should be analyzed within two separate contexts:its paleogeographic location and the history of its oceanic *** respect to its paleogeographic location,the tectonic properties of the PSCS vary widely from the Triassic to the mid-Late *** the Triassic,the Paleo-Tethys and the Paleo-Pacific Oceans were the major causes of tectonic changes in the SCS,while the PCSC may have been a remnant sea residing upon Tethys or Paleo-Pacific oceanic *** the Jurassic,the Meso-Tethys and the Paleo-Pacific oceans joined,creating a PSCS back-arc basin consisting of Meso-Tethys and/or Paleo-Pacific oceanic *** the Early Cretaceous to the midLate Cretaceous,the Paleo-Pacific Ocean was the main tectonic body affecting the SCS;the PSCS may have been a marginal sea or a back-arc basin with Paleo-Pacific oceanic *** respect to its oceanic crust,due to the subduction and retreat of the Paleo-Pacific plate in Southeast Asia at the end of the Late Cretaceous,the SCS probably produced new oceanic crust,which allowed the PSCS to formally *** this time,the PSCS was most likely a combination of a new marginal sea and a remnant sea;its oceanic crust,which eventually subducted and became extinct,consisted of both new oceanic crust and remnant oceanic crust from the Paleo-Pacific *** the present day,the remnant PSCS oceanic crust is located in the southwestern Nansha Trough.

关键词： tectonic evolution paleogeographic location new oceanic crust Proto-South China Sea

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Types and Characteristics of Volcanostratigraphic Boundaries and Their Oil-Gas Reservoir Significance

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Acta Geologica Sinica(English Edition) 2015年第1期89卷 163-174页

作者： tang huafeng Phiri CRYTON GAO Youfeng HUANG Yulong BIAN Weihua College of Earth Sciences Jilin University

Just like in sedimentary stratigraphy, the factor for constructing volcanostratigraphic volcanostratigraphic boundary is an important framework. The fundamental factor of volcanostratigraphic boundaries is to classify the types and define their characteristics. Based on field investigation and cross-wells section analysis of Mesozoic volcanostratigraphy in NE China, 5 types of volcanostratigraphic boundaries have been recognized, namely eruptive conformity boundary （ECB）, eruptive unconformity boundary （EUB）, eruptive interval unconformity boundary （EIUB）, tectonic unconformity boundary （TUB） and intrusive contacts boundary （ICB）. Except ICB, the unconformity boundaries can be divided into angular unconformity and paraconformity. The time spans and signs of these boundaries are analyzed by using age data of some volcanic fields that have been published. The time spans of ECB and EUB are from several minutes to years. In lava flows, cooling crust is distributed above and below ECB and EUB; in pyroclastic flows, airfalls and lahars, a fine layer below these boundaries has no discernable erosion at every part of the boundary. EUB may be curved or cross curved and jagged. The scale of ECB/EUB is dependent on the scale of lava flow or pyroclastic flows. The time span of EIUB is from decades to thousands of years. There is also weathered crust under EIUB and sedimentary rock beds overlie EIUB. In most instances, weathered crust and thin sedimentary beds are associated with each other laterally. The boundary is a smooth curved plane. The scale of EIUB is dependent on the scale of the volcano or volcano groups. The characteristics of TUB are similar to EIUB＇s. The time interval of TUB is from tens of thousands to millions of years. The scale of TUB depends on the scale of the basin or volcanic field. Both the lab data and logging data of wells in the Songliao Basin reveal that the porosity is greatly related to the boundaries in the lava flows. There is a high-porosity belt

关键词： volcanostratigraphy unconformity boundary geological characteristics northeast part ofChina volcanic rocks

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Characteristics of the Density and Magnetic Susceptibility of Rocks in Northern Borneo and their Constraints on the Lithologic Identification of the Mesozoic Rocks in the Southern South China Sea

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Acta Geologica Sinica(English Edition) 2021年第1期95卷 280-293页

作者： tang huafeng ZHAO Zhigang TIAN Zhiwen LU Baoliang tang Wu HE Kailun ZHU Chenxi WANG Pujun Key Laboratory of Mineral Resources Evaluation of Northeast Asia Ministry of Natural ResourcesChangchun 130061China CNOOC Research Institute Co. Ltd.Beijing 100028China College of Earth Sciences Jilin UniversityChangchun 130061China College of Geological Engineering and Geomatics Chang'an UniversityXi'an 710054China

Based on the volume magnetic susceptibility and specific gravity measurements and mineral and lithologic identification results for 540 samples,the rock type,density,and magnetic susceptibility of rocks from northern Borneo were analyzed,and the applicability of gravity and magnetic data to the lithologic identification of the Mesozoic strata in the southern South China Sea was assessed *** results show that there are 3 types and 25 subtypes of rocks in northern Borneo,mainly intermediate-mafic igneous rocks and exogenous clastic sedimentary rocks,with small amounts of endogenous sedimentary rocks,felsic igneous rocks,and metamorphic *** rocks that are very strongly-strongly magnetic and have high-medium densities are mostly igneous rocks,tuffaceous sandstones,and their metamorphic *** rocks that are weakly magnetic-non-magnetic and have medium-very low densities are mostly conglomerates,sandstones,siltstones,mudstones,and *** rocks that are weakly magnetic-diamagnetic and have highmedium densities are mostly limestones and siliceous *** Cenozoic rocks are characterized by low densities and medium susceptibilities;the Mesozoic rocks are characterized by medium densities and medium-high susceptibilities;and the pre-Mesozoic rocks are characterized by high densities and low *** on these results and the distribution characteristics of the various rock types,it was found that the pre-Mesozoic rocks produce weak regional gravity anomalies;the Mesozoic sedimentary rocks produce negative regional gravity anomalies;whereas the Mesozoic igneous rocks produce positive regional gravity anomalies;and the Cenozoic igneous rocks produce positive regional gravity *** regional high magnetic anomalies in the southern part of the South China Sea originate from the Mesozoic mafic igneous rocks and their metamorphic equivalents;and the regional medium magnetic anomalies may be produced by the felsic igneous rocks and their

关键词： density magnetic susceptibility Mesozoic Borneo South China Sea

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断陷盆地火山地层构成要素特征及地质意义:以吉林省九台全取心井下白垩统营城组为例

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地球科学 2024年第1期49卷 155-173页

作者：户景松唐华风余雪英黄玉龙王璞珺高有峰吉林大学地球科学学院吉林长春130061 吉林大学自然资源部东北亚矿产资源评价重点实验室吉林长春130061 中国石油长庆油田分公司勘探开发研究院陕西西安745100

火山地层具有特殊的时空属性和地质记录特征,但在盆地充填分析时未引起足够重视.为进一步明确火山地层的地质属性,利用松辽盆地下白垩统营城组全取心浅钻井(营一D1和营三D1井)资料开展火山地层构成要素特征及地质意义研究.营一D1井营城... 详细信息

火山地层具有特殊的时空属性和地质记录特征,但在盆地充填分析时未引起足够重视.为进一步明确火山地层的地质属性,利用松辽盆地下白垩统营城组全取心浅钻井(营一D1和营三D1井)资料开展火山地层构成要素特征及地质意义研究.营一D1井营城组一段和营三D1井营城组三段火山地层分别识别出3个和2个喷发间断不整合界面、10个和8个喷发整合/不整合界面.根据喷发间断不整合界面属性可知,营一D1井和营三D1井火山地层可分别划分为4个和3个火山机构,稀土和微量元素对火山机构有较好的响应.堆积单元有简单熔岩流、辫状熔岩流、穹丘、热碎屑流、热基浪和火山泥石流6类,熔岩类单元喷发时的火山气体排放强度弱于火山碎屑岩类单元.火山地层具有建造时间短暂和间断时间长久的时间属性,火山地层的建造速率不能简单地利用地层厚度和测试的顶底时间差来计算.

关键词：火山地层营城组堆积单元温室气体松辽盆地石油地质

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Filling Pattern of Volcanostratigraphy of Cenozoic Volcanic Rocks in the Changbaishan Area and Possible Future Eruptions

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Acta Geologica Sinica(English Edition) 2017年第5期91卷 1717-1732页

作者： tang huafeng KONG Tan WU Chengzhi WANG Pujun PENG Xu GAO Youfeng College of Earth Sciences Jilin University Changchun 130061 Jilin China Changbaishan Volcano Observatory Antu 133600 Jilin China

The Cenozoic volcanostratigraphy in the Changbaishan area had complex building ***-two eruption periods have been determined from the Wangtian＇e, Touxi, and Changbaishan volcanoes. The complex volcanostratigraphy of the Changbaishan area can be divided into four types of filling patterns from bottom to top. They are lava flows filling in valleys（LFFV）, lava flows filling in platform（LFFP）, lava flows formed the cone（LFFC）, and pyroclastic Flow filling in crater or valleys（PFFC/V）. LFFV has been divided into four layers and terminates as a lateral overlap. The topography of LFFV, which is controlled by the landform, is lens shaped with a wide flat top and narrow *** has been divided into three layers and terminates as a lateral downlap. The topography of LFFP is sheet and tabular shaped with a narrow top and wide bottom. It has large width to thickness ratio. It was built by multiple eruptive centers distributed along the fissure. The topography of LFFC, which is located above the LFFP, has a hummocky shape with a narrow sloping top and a wide flat bottom. It terminates as a later downlap or backstepping. It has large width to thickness ratio. It was built by a single eruptive center. The topography of PFFC/V, which located above the LFFC, LFFP, or valley, has the shape of fan and terminates as a lateral downlap or overlap. It has a small width to thickness ratio and was built by a single eruptive center. The filling pattern is controlled by temperature, SiO_2 content,volatile content, magma volume, and the paleolandform. In the short term, the eruptive production of the Changbaishan area is comenditic ash or pumice of a Plinian type eruption. The eruptive volume in future should be smaller than that of the Baguamiao period, and the filling pattern should be PFFC/V,which may cause huge damage to adjacent areas.

关键词： Volcanostratigraphy,filling pattern,formation mechanism,prediction of volcanic eruption Changbaishan

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Reassessment of the Distribution of Mantle CO_(2) in the Bohai Sea,China:The Perspective from the Source and Pathway System

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Acta Geologica Sinica(English Edition) 2022年第1期96卷 337-347页

作者： tang huafeng GUO Tianchan WU Keqiang LIU Zilin XU Jianyong LU Baoliang WANG Pujun Key Laboratory for Evolution of Past Life and Environment in Northeast Asia Jilin UniversityChangchun 130061China Key Laboratory of Mineral Resources Evaluation in Northeast Asia Ministry of Natural ResourcesChangchun 130061China College of Earth Sciences Jilin UniversityChangchun 130061China CNOOC Research Institute Beijing 100028China Institute of Gravity and Magnetic Technology Chang’an UniversityXi’an 710054China

Research on the distribution of mantle CO_(2)should involve comprehensive analysis from CO_(2)source to *** crust-mantle pathway system is the key controlling factor of the distribution of mantle CO_(2),but has received little *** pathway system and controlling factors of CO_(2)distribution in the Bohai Sea are analyzed using data on fault styles and information on the mantle and *** relation between volcanic rocks and the distribution of mantle CO_(2)is reassessed using age data for CO_(2)*** distribution of mantle CO_(2)is controlled by uplift of the asthenosphere and upper mantle,magma conduits in the mantle and fault systems in the *** regions of the asthenosphere are accumulation areas for CO_(2).The area with uplift of the Moho exhibits accumulation of mantle CO_(2)at ***_(2)was mainly derived from vertical migration through the upper mantle and lower *** fault style in the upper crust controls the distance of horizontal migration and the locations of CO_(2)*** distribution of mantle CO_(2)and volcanic rocks are not the same,but both probably followed the same pathways *** CO_(2)in the Bohai Sea is concentrated in the Bozhong sag and the surrounding area,particularly in a trap that formed before 5.1 Ma and is connected to crustal faults(the Bozhang faults)and lithospheric faults(the Tanlu faults).

关键词： mantle CO_(2) source area pathway system fault Moho Bohai Sea

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Formation mechanism of high-quality reservoirs of Lower Cretaceous volcaniclastic sedimentary rocks in Songliao Basin

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Petroleum Research 2017年第2期2卷 186-198页

作者： huafeng tang Tan Kong Xiang Liu Di Yang Hongyu Huo Yulong Huang College of Earth Science Jilin UniversityJilin 130061China Exploration and Development Institute of PetroChina Jilin Oilfield Company Jilin 138000China

High abundance gas reservoirs were discovered in the volcaniclastic sedimentary rocks of Wangfu faulted depression in Songliao Basin,but the distribution pattern and formation mechanism of this type of high-quality reservoirs were not *** the Shahezi Formation of Well Block CS6 in Wangfu faulted depression,the void space type,reservoir property,pore throat and pore diameters were studied by means of the casting thin section,helium intrusion porosimetry,mercury intrusion porosimetry(MIP)and nuclear magnetic resonance(NMR)methods,moreover,formation mechanism and main controlling factors of the high-quality reservoirs were *** showed that lithology of high-quality reservoirs consisted of the volcaniclastic sedimentary agglomerate and the volcaniclastic sedimentary breccia,and exhibited the coarsening-upward ***,three types(seven subtypes)of void spaces were identified,among which the intragranular vesicles with primary abundant pores were uniquely developed in the high-quality reservoirs of volcaniclastic sedimentary rocks,indicating this high-quality reservoir belonged to the large-pore and small-throat reservoir;porosity and permeability of volcaniclastic sedimentary agglomerate were slightly higher than those of volcaniclastic sedimentary breccia,and both were significantly higher than those of sedimentary rock in the Shahezi Formation,the porosity was closely related with the burial *** mechanisms of reservoirs in the volcaniclastic sedimentary rocks were release of volatile matters in parent rocks,grain support,dissolution and tectonic modification,among which the former two were the main controlling *** high-quality reservoirs over the study area were mainly distributed in the central part of the fan of volcaniclastic sedimentary rocks,among which the grain-supported,coarse-grained volcaniclastic sedimentary rocks with high content of intragranular vesicular detritus and burial depth less than 3000 m

关键词： Volcaniclastic sedimentary rocks High-quality reservoirs Void space Formation mechanism Shahezi Formation Songliao Basin

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