检索结果-南通市图书馆

Lower Boundary of the marine Pleistocene in Northern Shelf of the South china Sea

Acta Geologica Sinica(English Edition) 1991年第4期65卷 427-439,460页

作者： Wang Pinxian Xia Lunyu Wang Lujiang cheng xinrong department of marine geology, tongji university, Shanghai 200092,china research institute,{3., zhanjiang, guangdong 524057, china 1 1) department of marine geology Tongji University Shanghai 200092 China 2 2) research institute Nanhai West Oil Corporation Zhanjiang Guangdong 524057 China

A marine stratigraphic sequence across the Pliocene / Pleistocene boundary has been found in the north-ern continental shelf of the South china Sea. The marine Quaternary deposits in the Yinggehai Basin may ex-ceed 2,000 m in thickness, probably providing the best section for studying the lower boundary of the marinePleistocene in South china. The vertical succession with planktonic foraminifers and nannofossils revealed inboreholes in the basin has been well correlated with that in the international stratotype section of thePliocene / Pleistocene boundary at Vrica, Italy, resulting in the acquirement of a biostratigraphic boundary at1.64 Ma. This boundary, however, does not coincide with any prominent lithological palaeoenvironmentalchanges in the study area and can hardly be used in geological practice. There are, in contrast, significantchanges at the level of LAD of Globorotalia multicamerata sensu lato located below the above-mentionedboundary. The percentage of planktonic foraminifers in the total population and preservation of foraminiferaltests display great changes at this level corresponding to a clear onlap on the seismic profiles and indicating adepositional hiatus at ca. 2.0-2.5 Ma. Since the level can be widely traced in the Pearl River Mouth Basin andthe Beibu Gulf Basin and well corresponds with the marked depositional environmental changes recorded inthe west Pacific and other regions, it is recommended that the Plio / Pleistocene boundary be drawn at the levelof Gr. multicamerata sensu lato LAD, roughly concurrent with the Gauss / Matuyama turn.

关键词： Lower Boundary of the marine Pleistocene in Northern Shelf of the South china Sea

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

Salinity variation and hydrographic dynamics in the early Cambrian Nanhua Basin(South china)

引用

Science china Earth Sciences 2023年第6期66卷 1268-1278页

作者： Meng cheng Zihu ZHANG chengsheng JIN Wei WEI Haiyang WANG Thomas J.ALGEO Chao LI State Key Laboratory of oil and Gas Reservoir geology and Exploitation&institute of Sedimentary geology Chengdu University of TechnologyChengdu 610059China State Key Laboratory of Biogeology and Environmental geology China University of GeosciencesWuhan 430074China International Center for Sedimentary Geochemistry and Biogeochemistry research Chengdu University of TechnologyChengdu 610059China College of Resource Environment and Tourism Hubei University of Arts and ScienceXiangyang 441053China School of Earth Science China University of GeosciencesWuhan 430074China School of Earth Sciences and Engineering Nanjing UniversityNanjing 210023China State Key Laboratory of Geological Processes and Mineral Resources China University of GeosciencesWuhan 430074China department of geology University of CincinnatiCincinnati 45221-0013USA

Despite intensive study of the early Cambrian Nanhua Basin(ECNB)in South china,its degree of connectedness to the open ocean remains uncertain,impeding analysis of contemporaneous oceanic redox evolution and its role in the Cambrian *** analyzed bulk-shale B/Ga,a newly proposed proxy for watermass salinity in ancient depositional systems,for three sections(Daotuo,Yuanjia,and Zhalagou)representing a range of water depths in the ECNB and spanning early Cambrian Stages 2 and *** B/Ga proxy records a salinity gradient in the basin,with increasing salinity from shallow-to deep-water areas,particularly during the deposition of black shales of the lower Jiumenchong/Niutitang/Zhalagou *** gradient was probably due to the mixing of freshwater from adjacent landmasses with marine waters within a moderately restricted *** three study sections exhibit a monotonic rise in salinity over the~9-Myr study interval,reflecting increased watermass exchange with the open ocean due to regional tectonic and/or global sea-level *** improved watermass exchange may have weakened water-column stratification and reduced deep-water anoxia in the ECNB,contributing the enhanced oceanic oxygenation along with global environmental controls and further modulating the expression of the Cambrian Explosion recorded in Lower Cambrian sections of South *** study thus highlights the need for comprehensive analyses of hydrographic dynamics in marginal-marine settings that are used to explore co-evolutionary relationships between early animals and environmental oxygen levels.

关键词： B/Ga Boron Gallium Watermass restriction Cambrian Explosion Co-evolution

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

Petroleum geology and exploration direction of gas province in deepwater area of North Carnarvon Basin, Australia

引用

china geology 2020年第4期3卷 623-632页

作者： Yang-wei Feng Yan Ren Gong-cheng Zhang Hong-jun Qu School of Geographical Science and Tourism Nanyang Normal UniversityNanyang 473061China department of geology Northwest UniversityXi’an 710069China PetroJindian(Beijing)Sci-Tech Co. Ltd.Beijing 100000China CNOOC research institute Co. Ltd.Beijing 100028China

North Carnarvon Basin is a gas province with minor oily sweet spots in deepwater area with water depth more than 500 m,which is one of the hot spots of global petroleum exploration for its series of giant hydrocarbon discoveries in recent ***,the degree of oil and gas exploration in deepwater area is still low,and the conditions for oil and gas accumulation are not *** on the current exploration situation and latest database of fields,applying multidisciplinary analysis of hydrocarbon {3.,hydrocarbon accumulation elements and its exploration direction of North Carnarvon Basin in deepwater area are *** results show that there are three sets of main source rocks in deepwater area of North Carnarvon Basin,which are Triassic marine shale in Locker Formation and delta coal-bearing mudstone with thin carbonaceous mudstone in Mungaroo Formation,Lower–Middle Jurassic paralic carbargilite and coal measure strata in Athol Formation and Murat Formation,Cretaceous delta mudstone in Barrow Group and marine shale in Muderong *** source rock samples show gas-prone *** coarse sandstone of delta facies in Middle–Upper Triassic Mungaroo Formation is the most important reservoir in deepwater area,Lower Cretaceous Barrow Group deep-water gravity flow or underwater fan turbidite sandstone is the secondly main *** Cretaceous marine shale in Muderong Formation is most important regional *** mudstone in Mungaroo Formation is an important interlayer caprock in deepwater *** are two main reservoir accumulation assemblages in deepwater area,one is Triassic structural-unconformity plane reservoir accumulation assemblage of Locker Formation to Mungaroo Formation,and the other is Lower–Middle Jurassic Athol Formation and Murat Formation–Lower Cretaceous stratigraphic lithology-structural reservoir accumulation assemblage of Barrow Group to Muderong *** are three main control factors of hydrocarbon Ac

关键词： Mungaroo Formation Barrow Group oil and gas exploration engineering Exmouth plateau North Carnarvon Basin Australia

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

A mathematical diffusion model of carbon isotopic reversals inside ultra-tight Longmaxi shale matrixes

引用

Petroleum Science 2022年第5期19卷 2014-2026页

作者： Bao-Jian Shen Zhi-Liang He cheng Tao Jin-Cai Shen Zong-Quan Hu Zhi-Ming Li Yuan-Hao Cao Wei Chen State Key Laboratory of Shale oil and Gas Enrichment Mechanisms and Effective Development SINOPECBeijing100083China Wuxi Petroleum geology institute SINOPEC Petroleum Exploration and Production Research InstituteWuxiJiangsu 214126China china Petroleum&Chemical corporation Beijing100728China Chongqing Fuling Shale Gas Exploration and Development Co. Ltd.SINOPECChongqing408014China Petroleum Exploration and Production research institute SINOPECBeijing100083China School of Energy Soochow UniversitySuzhouJiangsu 215006China

Developing mathematical models for high Knudsen number(Kn)flow for isotopic gas fractionation in tight sedimentary rocks is still *** this study,carbon isotopic reversals(δ^(13.C_(1)>δ^(13.C_(2))were found for four Longmaxi shale samples based on gas degassing *** in shale with higher gas content exhibits larger ***,a mathematical model was developed to simulate the carbon isotopic reversals of methane and *** model is based on these hypotheses:(i)diffusion flow is dominating during gas transport process;(ii)diffusion coefficients are nonlinear depending on concentration *** model not only shows a good agreement with isotopic reversals,but also well predicts gas production rates by selecting appropriate exponents m and m^(*) of gas pressure gradient,where m is for ^(12)C and m^(*)is for ^(13.***,the(m−m^(*))value has a positive correlation with fractionation level.(m1−m1^(*))of methane are much higher than that of ***,the predicted carbon isotopic reversal magnitude(δ^(13.C_(1)−δ^(13.C_(2))exhibits a positive relationship with total gas content since gas in shale with higher gas content experiences a more extensive high Kn number diffusion *** a result,our model demonstrates an impressive agreement with the experimental carbon isotopic reversal data.

关键词： Diffusion Isotopic fractionation Carbon isotopic reversal Modeling

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

PM_(2.5) and PM_(10-2.5) chemical composition and source apportionment near a Hong Kong roadway

引用

Particuology 2015年第1期13卷 96-104页

作者： Yan cheng Shuncheng Lee Zhaolin Gu Kinfai Ho Yunwei Zhang Yu Huang Judith C.Chow John G.Watson Junji Cao Renjian Zhang department of Environmental Science and Technology School of Human Settlements and Civil EngineeringXi'an Jiaotong University State Key Laboratory of Loess Quaternary geology Institute of Earth and EnvironmentChinese Academy of Sciences department of Civil and Structural Engineering Research Center for Environmental Technology and ManagementThe Hong Kong Polytechnic University School of Public Health and Primary Care The Chinese University of Hong Kong Division of Atmospheric Sciences Desert Research Institute Key Laboratory of Regional Climate-Environment research for Temperate East Asia Institute of Atmospheric PhysicsChinese Academy of Sciences

Twenty-four-hour PM2.5 and PM10 samples were collected simultaneously at a highly trafficked road-side site in Hong Kong every sixth day from October 2004 to September 2005. The mass concentrations of PM2.5, PMlo-2.5 （defined as PM10 - PM2.5）, organic carbon （OC）, elemental carbon （EC）, water-soluble ions, and up to 25 elements were determined. Investigation of the chemical compositions and potential sources revealed distinct differences between PM2.5 and PM10-2.5. The annual average mass concentrations were 55.5 ＋ 25.5 and 25.9±15.7μg/m^3.for PM2.5 and PM10-2.5, respectively. EC, OM （OM = OC × 1.4）, and ammonium sulfate comprised over -82% of PM2.5, accounting for -29%, -27%, and -25%, respectively, of the PM2.5 mass. Low OC/EC ratios （less than 1） for PM2.5 suggested that fresh diesel-engine exhaust was a major contributor. Seven sources were resolved for PM2.5 by positive matrix factorization （PMF） model, including vehicle emissions （-29%）, secondary inorganic aerosols （-27%）, waste incinera- tor/biomass burning （-23.）, residual oil combustion （-10%）, marine aerosols （-6%）, industrial exhaust （-4%）, and resuspended road dust （-1%）. EC and OM comprised only -19% of PM10-2.5. The average OC/EC ratio of PM10-2.5 was 7.8± 14.2, suggesting that sources other than vehicular exhaust were important contributors. The sources for PM10-2.5 determined by the PMF model included -20% traffic-generated resuspension （e.g., tire dust/brake linear/petrol evaporation）, -17% locally resuspended road dust, -17% marine aerosols, -12% secondary aerosols/field burning, and -11% vehicle emissions.

关键词： PM2.5 PM10-2.5 Roadside Chemical composition Source apportionment Hong Kong

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

Stratigraphy of the Triassic-Jurassic Boundary Successions of the Southern Margin of the Junggar Basin,Northwestern china

引用

Acta Geologica Sinica(English Edition) 2011年第2期85卷 421-436页

作者： SHA Jingeng Vivi VAJDA PAN Yanhong Linda LARSSON YAO Xiaogang ZHANG Xiaolin WANG Yaqiong cheng Xiansheng JIANG Baoyu DENG Shenghui CHEN Siwei PENG Bo State Key Laboratory of Palaeobiology and Stratigraphy Nanjing Institute of Geology and Palaeontology the Chinese Academy of Sciences Nanjing 210008 China department of Earth and Ecosystem Sciences Lund University 22362 Lund Sweden Petrochina Xinjiang oil Field Company Keramay 834000 China School of Earth Sciences and Engineering Nanjing University Nanjing 210093 China research institute of Petroleum of Exploration and Development PetroChina Beijing 100083 China

The Triassic-Jurassic （Tr-J） boundary marks a major extinction event, which （～200 Ma）resulted in global extinctions of fauna and flora both in the marine and terrestrial realms. There prevail great challenges in determining the exact location of the terrestrial Tr-J boundary, because of endemism of taxa and the scarcity of fossils in terrestrial settings leading to difficulties in linking marine and terrestrial sedimentary successions. Investigation based on palynology and bivalves has been carried out over a 1113.m thick section, which is subdivided into 13. beds, along the Haojiagou valley on the southern margin of the Junggar Basin of the northern Xinjiang, northwestern{3.. The terrestrial Lower Jurassic is conformably resting on the Upper Triassic strata. The Upper Triassic covers the Huangshanjie Formation overlaid by the Haojiagou Formation, while the Lower Jurassic comprises the Badaowan Formation followed by the Sangonghe Formation. Fifty six pollen and spore taxa and one algal taxon were identified from the sediments. Based on the key-species and abundance of spores and pollen, three zones were erected： the Late Triassic （Rhaetian） Aratrisporites-Alisporites Assemblage, the Early Jurassic （Hettangian） Perinopollenites-Pinuspollenites Assemblage, and the Sinemurian Perinopollenites-Cycadopites Assemblage. The Tr-J boundary is placed between bed 44and 45 coincident with the boundary between the Haojiagou and Badaowan formations. Beds with Ferganoconcha （？）, Unio-Ferganoconcha and Waagenoperna-Yananoconcha bivalve assemblages are recognized. The Ferganoconcha （？） bed is limited to the upper Haojiagou Formation,Unio- Ferganoconcha and Waagenoperna- Yananoconcha assemblages are present in the middle and upper members of the Badaowan Formation. The sedimentary succession is interpreted as terrestrial with two mainly lake deposit intervals within Haojiagou and Badaowan formations, yielding fresh water algae and bivalves. However, the presence of brackish water

关键词： Biostratigrapy Triassic-Jurassic Hettangian-Sinemurian palynology bivalve Haojiagou of Junggar Basin northwestern china

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

松辽盆地国际大陆科学钻探:白垩纪恐龙时代陆相地质记录

引用

地学前缘 2024年第1期31卷 412-430,511-534页

作者：王成善高远王璞珺吴怀春吕庆田朱永宜万晓樵邹长春黄永建高有峰席党鹏王稳石贺怀宇冯子辉杨光邓成龙张来明王天天胡滨崔立伟彭诚余恩晓黄何杨柳毋正轩中国地质大学(北京)生物地质与环境地质国家重点实验室北京100083 中国地质大学(北京)地球科学与资源学院北京100083 吉林大学地球科学学院吉林长春130026 中国地质大学(北京)海洋学院北京100083 中国地质科学院北京100037 中国地质科学院勘探技术研究所河北廊坊065000 中国地质大学(北京)地球物理与信息技术学院北京100083 中国科学院地质与地球物理研究所岩石圈演化国家重点实验室北京100029 中国石油大庆油田有限责任公司勘探开发研究院黑龙江大庆163712 中国石油吉林油田分公司勘探部吉林松原138000 中国地质大学(北京)科学研究院北京100083 中国地质调查局自然资源实物地质资料中心河北廊坊101149 海南野火科技有限公司海南海口570100 成都理工大学沉积地质研究院四川成都610059

过去一百年地球的气候持续变暖,未来地球可能进入两极无冰的温室气候状态。白垩纪是深时典型的温室气候时期,认识白垩纪气候对于理解过去和预测未来气候变化均有重要意义。松辽盆地国际大陆科学钻探以研究白垩纪陆地气候与环境演变、探... 详细信息

过去一百年地球的气候持续变暖,未来地球可能进入两极无冰的温室气候状态。白垩纪是深时典型的温室气候时期,认识白垩纪气候对于理解过去和预测未来气候变化均有重要意义。松辽盆地国际大陆科学钻探以研究白垩纪陆地气候与环境演变、探索大规模陆相有机质富集机理为科学目标,在国际大陆科学钻探计划ICDP框架下,成为全球第一口钻穿白垩纪陆相地层的大陆科学钻探井。项目历时16年,以超97%的取心率获得连续完整的8187 m岩心,建立了松辽盆地陆相白垩系高精度年代地层框架,重建了松辽盆地白垩纪多时间尺度陆地气候旋回与气候事件,揭示了白垩纪湖海平面波动机理,确认了松辽盆地发生过海侵事件。松辽盆地国际大陆科学钻探推动了全球地质学家合作研究白垩纪温室气候,带动了一系列高水平学术成果的产出,为松辽盆地油气勘探可持续发展提供了重要科学支撑,产生了显著的社会效益和重大的国际与国内影响。松辽盆地国际大陆科学钻探代表了探索深时的一个具有里程碑意义的阶段。可以预见,未来借助科学钻探,人类会不断增强对深时气候环境演化等方面的认识。

关键词：国际大陆科学钻探计划松辽盆地白垩纪古气候年代地层格架海侵事件

来源：

维普期刊数据库

同方期刊数据库

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

深层页岩储层“工程甜点”评价与优选——以川南永川、丁山地区为例

引用

石油实验地质 2023年第2期45卷 210-221页

作者：葛勋郭彤楼黎茂稳赵培荣邓虎成李王鹏钟城中国石化石油勘探开发研究院北京102206 中国石化西南油气分公司成都610041 中国石化油田勘探开发事业部北京100728 成都理工大学能源学院成都610059 南京大学地球科学与工程学院南京210033

四川盆地深层地质条件复杂,页岩储层埋藏深度大,气井产能普遍偏低,压裂施工面临极大挑战。为寻找深层页岩气“工程甜点”,以永川、丁山地区为例,利用钻井、岩心、成像测井、地震等资料,基于实测岩石力学参数、天然裂缝发育程度、天然裂... 详细信息

四川盆地深层地质条件复杂,页岩储层埋藏深度大,气井产能普遍偏低,压裂施工面临极大挑战。为寻找深层页岩气“工程甜点”,以永川、丁山地区为例,利用钻井、岩心、成像测井、地震等资料,基于实测岩石力学参数、天然裂缝发育程度、天然裂缝有效性、水平应力差以及水平井轨迹与最小水平主应力夹角,对永川、丁山地区深层页岩储层水力压裂效果影响因素进行深入探讨。研究结果表明,川南永川、丁山地区龙一段3.(1)小层脆性最好,为压裂首选目的层;离断层越近,泵压和施工压力越升高,改造体积下降;水力裂缝与天然裂缝夹角在55°左右时,可以保证裂缝具有较好的延伸与转向能力;在高硅质页岩段和断层带内,最小水平主应力越小,水力裂缝越易扩散;水平井轨迹与最大水平主应力方位夹角越大,压裂效果越好。最终建立了永川、丁山复杂构造区海相页岩气“工程甜点”的评价指标体系,优选出永川、丁山Ⅰ类地质工程“甜点”区。

关键词：深层页岩工程甜点气井产能压裂施工龙一段3.(1)小层四川盆地

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

海洋天然气水合物开采的固相控制策略

引用

新能源进展 2022年第2期10卷 137-145页

作者：卢静生吴思婷李栋梁梁德青魏伟何勇史伶俐邓福成熊友明中国科学院广州能源研究所广州510640 中国石油勘探开发研究院新能源研究所河北廊坊065007 中国科学院天然气水合物重点实验室广州510640 广东省新能源和可再生能源研究开发与应用重点实验室广州510640 天然气水合物国家重点实验室北京100028 中国科学院大学北京100049 西南石油大学油气藏地质及开发工程国家重点实验室成都610500

天然气水合物是一种潜在的洁净能源资源,我国南海有丰富的储量,被认为是后石油时代的重要战略资源之一,然而目前大部分的海洋天然气水合物开采都受到出砂影响。针对深水天然气水合物开采过程中易出砂的现象,通过前期的出砂实验、理论和... 详细信息

天然气水合物是一种潜在的洁净能源资源,我国南海有丰富的储量,被认为是后石油时代的重要战略资源之一,然而目前大部分的海洋天然气水合物开采都受到出砂影响。针对深水天然气水合物开采过程中易出砂的现象,通过前期的出砂实验、理论和数值模拟,提出了海洋天然气水合物开采过程中固相(砂和水合物)控制方案。总结了天然气水合物开采过程中出砂特性和防砂案例,提出大颗粒水合物对泥质粉砂具有挡砂作用,进而影响防砂设计精度。据此,根据开发角度的天然气水合物藏6类细分,提出了考虑水合物颗粒本身及其分解作用的固相控制方法。结合南海天然气水合物储层公开资料,设计出相应的固相控制精度,以期最终形成出砂/防砂/井筒携砂/水合物二次生成预防为一体的固相控制体系,为南海天然气水合物安全高效地商业开发提供参考。

关键词：天然气水合物开采固相控制海洋南海

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

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

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：