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The occurrence of vanadium in nature:its biogeochemical cycling and relationship with organic matter—a case study of the Early Cambrian black rocks of the Niutitang Formation,western Hunan,China

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Acta Geochimica 2021年第6期40卷 973-997页

作者： Rizwan Sarwar Awan chenglin liu Shangfeng Yang Yuping Wu Qibiao Zang Ashar Khan Guoxiong Li College of Geosciences China University of PetroleumBeijing 102249China State Key Laboratory of Petroleum Resource and Prospecting China University of PetroleumBeijing 102249China Water and Power Development Authority Lahore Pakistan

Vanadium in the black rocks has economic and environmental *** sediments,it is broadly disseminated as a multivalent metal element mainly sensitive to redox *** in petroleum,it is considered an abundant *** is an essential tool to determine the relationship of the Earth with extra-terrestrial *** the Yangtze region,the black rocks of the Early Cambrian Niutitang Formation are highly enriched in the concentration of V,Co,Ni and *** sediments are comprised of a high total organic carbon content,and the average concentration of vanadium is over 240 *** we discuss the mechanisms and conditions that were responsible for the accumulation of vanadium in these black sediments in the Yangtze *** oxygenated ocean water is favorable for the dissolved vanadate species Ⅴ(Ⅴ).Therefore,in oxic ocean-water,it can be reduced by organic matters or by H_(2)S to vanadyl ions Ⅴ(Ⅳ),which can facilely be adsorbed to the tiny particles and finally deposit into the sediments with the settling of the *** presence of V_(2)O_(3) in the Niutitang Formation indicates the isomorphism state of vanadium existence in the clay *** and pyrite are the most favorable mineral for vanadium ***,it is suggested the quartz of non-biogenic origin might be unfavorable for vanadium *** is mainly derived from the diagenetic transformation of its precursor(porphyrin pigments and chlorophyll)from the *** the Early Cambrian period,the massive transgression in the sea level created a favorable environment for organisms to ***,the hydrothermal activities brought massive nutrient supply in the form of vanadium and other metal elements from the deep *** creatures consumed the vanadium-rich nutrients,which became a part of their bodies in the form of hard and soft *** on,when these organisms died and were submerged in the *** the diagenetic actions,this v

关键词： Vanadium Organic matter Chlorophyll Porphyrin Anthropogenic Isomerization

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The First Halite Age Revealed by MC-ICP-MS U-series Dating in Lop Nur, Northwestern China

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Acta Geologica Sinica(English Edition) 2018年第2期92卷 881-882页

作者： LU Fenglin liu chenglin JIAO Pengcheng ZHAO Jianxin ZHANG Hua MLR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral Resources Chinese Academy of Geological Sciences Beijing 100037 China China University of Geosciences Beijing 100083 China Radiogenic Isotope Facility School of Earth Sciences the University of Queensland Brisbane 4072 QLD Australia

Objective Quaternary saline lakes are significant for paleoclimatic reconstruction due to the high sensitivity of salt minerals to environmental changes. However, salts in these areas with great thickness such as halite or potash representing extreme environments have severely blocked the application of traditional chronological methods. This is typified by Lop Nut, since accurate age to constrain salt sequences is very limited hindering further exploration for climatic changes and genetic mechanism of potash resources. For the first time, this work used MC-ICP-MS U-series to date halite of Lop Nur. The obtained results combined with previous age data will provide new age constrains on salt sequences in this area and improve our understanding of phased evolution of saline lake and the formation of potash deposits on a time scale.

关键词： ICP Northwestern China MC The First Halite Age Revealed by MC-ICP-MS U-series Dating in Lop Nur MS

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Potential recoverable natural gas resources in China

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Petroleum Science 2008年第1期5卷 83-86页

作者： liu chenglin Zhu Jie Che Changbo liu Guangd School of Resource and Information China University of Petroleum Beijing 102249 China Oil and Gas Resource Strategy Research Center of the Ministry of Land and resource Beijing China

Natural gas resources in China are abundant. The undiscovered recoverable natural gas resources in China are estimated to be 19.27 ×10^12 m^3. Natural gas is mainly distributed in the middle and west China and offshore areas of China. The Tarim Basin, Sichuan Basin, Ordos Basin, East China Sea Basin, Tsaidam Basin, Yinggehai Basin, and Qiongdongnan Basin are the main gas-bearing basins. The natural gas resources are not distributed evenly and are under-explored in China. The deeper horizons in east China, foreland basins and craton paleo-uplifts in the middle and west China, and the offshore basins are the main exploration areas in the future.

关键词： Natural gas resources exploration area China

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青藏高原东北部更尕海7—9月水-气界面CH_(4)、N_(2)O交换通量变化及其影响因素

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盐湖研究 2024年第1期32卷 20-28页

作者：刘铖霖金彦香金鑫林嘉欣李渊青海师范大学青藏高原地表过程与生态保育教育部重点实验室青海西宁810018 青海师范大学地理科学学院青海省自然地理与环境过程重点实验室青海西宁810018 高原科学与可持续发展研究院青海西宁810018 中国科学院西北生态环境资源研究院甘肃兰州730000

为了解青藏高原浅水草型湖泊水-气界面CH_(4)与N_(2)O通量的交换机制,以青藏高原东北部的更尕海为例,分别在2021年7月、8月、9月采用漂浮静态箱-气相色谱仪法对其水-气界面CH_(4)、N_(2)O交换通量进行连续、定点观测,并结合流域气象、... 详细信息

为了解青藏高原浅水草型湖泊水-气界面CH_(4)与N_(2)O通量的交换机制,以青藏高原东北部的更尕海为例,分别在2021年7月、8月、9月采用漂浮静态箱-气相色谱仪法对其水-气界面CH_(4)、N_(2)O交换通量进行连续、定点观测,并结合流域气象、湖泊水环境探讨其影响因素。结果表明:(1)更尕海水-气界面CH_(4)交换通量平均值为0.557 mg(/m^(2)·h),整体表现为源;N_(2)O交换通量平均值为-0.100μg(/m^(2)·h),整体表现为弱汇。(2)在空间上,受水生植物分布差异影响,更尕海黄苔分布区为水-气界面CH_(4)排放的热点区域,其次为狐尾藻分布区,无植被分布区最低。N_(2)O交换通量的变化受污染负荷的影响,粪便排放区是N_(2)O排放的热点区域。(3)在时间上,CH_(4)交换通量的变化则受温度影响,CH_(4)排放峰值主要出现于15:00时;N_(2)O交换通量的变化与沉水植物的光合作用有关。沉水植物光合作用向水体释放O_(2)并使pH升高,从而抑制了沉积物中的反硝化作用与微生物活性,使得湖泊整体表现为N_(2)O的“汇”。(4)相较于中国东部湖泊,青藏高原气压低,使得水体DO含量相对较低,减弱了水体对CH_(4)的氧化作用,还降低了水体中CH_(4)的溶解度,导致青藏高原湖泊CH_(4)排放通量显著高于中国东部湖泊。而青藏高原湖泊受人类活动的干扰较小,外源性污染较轻,造成该区域N_(2)O排放通量显著低于中国东部湖泊。

关键词：青藏高原浅水草型湖泊水-气界面甲烷氧化亚氮

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Characterization of a Lacustrine Shale Reservoir and the Evolution of its Nanopores: A Case Study of the Upper Cretaceous Qingshankou Formation in the Songliao Basin, Northeastern China

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Acta Geologica Sinica(English Edition) 2020年第2期94卷 337-351页

作者： ZHANG Xu liu chenglin LI Bing WU Linqiang GUI Herong WANG Ziling ZHANG Zhihui LIANG Dexiu State Key Laboratory of Petroleum Resource and Prospecting China University of PetroleumBeijing 102249China College of Geosciences China University of Petroleum.Beijing 102249China National Engineering Research Center of Coal Mine Water Hazard Controlling(Suzhou University) SuzhouAnhui234000China Geological Exploration Technology Institute of Anhui Province Hefei 230031China Development and Research Center China Geological SurveyBeijing 100037China

The Songliao Basin is one of the most important petroliferous basins in northern China. With a recent gradual decline in conventional oil production in the basin, the exploration and development of unconventional resources are becoming increasingly urgent. The Qingshankou Formation consists of typical Upper Cretaceous continental strata, and represents a promising and practical replacement resource for shale oil in the Songliao Basin. Previous studies have shown that low-mature to mature Qingshankou shale mainly preserves type Ⅰ and type Ⅱ1 organic matter, with relatively high total organic carbon(TOC) content. It is estimated that there is a great potential to explore for shale oil resources in the Qingshankou Formation in this basin. However, not enough systematic research has been conducted on pore characteristics and their main controlling factors in this lacustrine shale reservoir. In this study, 19 Qingshankou shales from two wells drilled in the study area were tested and analyzed for mineral composition, pore distribution and feature evolution using Xray diffraction(XRD), scanning electron microscopy(SEM), low-pressure nitrogen gas adsorption(N2-GA), and thermal simulation experiments. The XRD results show that clay, quartz, and feldspar are the dominant mineral constituents of Qingshankou shale. The clay minerals are mostly illite/smectite mixed layers with a mean content of 83.5%, followed by illite, chlorite, and kaolinite. There are abundant deposits of clay-rich shale in the Qingshankou Formation in the study area, within which many mineral and organic matter pores were observed using SEM. Mineral pores contribute the most to shale porosity;specifically, clay mineral pores and carbonate pores comprise most of the mineral pores in the shale. Among the three types of organic matter pores, type B is more dominant the other two. Pores with diameters greater than 10 nm supply the main pore volume;most are half-open slits and wedge-shaped pores. The total por

关键词： lacustrine shale pore structure pore evolution Upper Cretaceous Songliao Basin

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Evolution of the Carboniferous Reef in Eastern Qaidam Basin and its Hydrocarbon Significance

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Acta Geologica Sinica(English Edition) 2017年第1期91卷 349-350页

作者： PENG Bo liu chenglin LI Zongxing MA Yinsheng CAO Jun ZHANG Wang ZHANG Xu Institute of Geomechanics Chinese Academy of Geological Sciences College of Geosciences China University of Petroleum (Beijing)

Objective Reef reservoirs have recently been receiving more and more attention due to their important role in petroleum ***-scale reefs have been previously discovered in the Paleozoic strata of western China,suchas the Late Permian of the Sichuan Basin,Late Ordovician of the Ordos Basin,and Late Ordovician of the Tarim Basin,which are all important hydrocarbon reservoirs in these areas.

关键词： In Evolution of the Carboniferous Reef in Eastern Qaidam Basin and its Hydrocarbon Significance

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The Impact of the Linked Factors of Provenance,Tectonics and Climate on Potash Formation:An Example from the Potash Deposits of Lop Nur Depression in Tarim Basin,Xinjiang,Western China

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Acta Geologica Sinica(English Edition) 2015年第6期89卷 2030-2048页

作者： liu chenglin JIAO Pengcheng Lü Fenglin WANG Yongzhi SUN Xiaohong ZHANG Hua WANG Licheng YAO Fojun MLR Key Laboratory of Metallogeny and Mineral Assessment Institute of Mineral ResourcesChinese Academy of Geological Sciences School of Earth Sciences and Resources China University of Geosciences College of Instrumentation & Electrical Engineering Jilin University

Potash deposits commonly accumulate in highly restricted settings at the final stage of brine evaporation. This does not mean that potash deposits are formed simply as a result of the evaporation concentration of seawater or lake water, but rather as a coupling result of particular provenance, tectonics and climate activities. In this paper, we focus on the formative mechanism of the potash deposits of Lop Nur depression in Tarim Basin to interpret the detailed coupling mechanism among provenance, tectonics and climate. In terms of the provenance of Lop Nur Lake, the water of the Tarim River which displays ＂potassium-rich＂ characteristics play an important role. In addition, the Pliocene and Lower-Middle Pleistocene clastic beds surrounding Lop Nur Lake host a certain amount of soluble potassium and thus serves as ＂source beds＂ for potash formation. During the late Pliocene, the Lop Nur region has declined and evolved into a great lake from the previous piedmont and diluvial fan area. Since the mid Pleistocene, the great-united Lop Nur Lake has been separated and has generated a chain system consisting of Taitema Lake, Big Ear Lake and Luobei Lake which has turned into the deepest sag in Lop Nur Lake. Dry climate in Lop Nur region has increased since the Pliocene, and became extreme at the late Pleistocene. The study implies that potash formation in Lop Nur Lake depends on the optimal combination of extreme components of provenance, tectonics and climate during a shorter-term period. The optimal patterns of three factors are generally characterized by the long-term accumulation and preliminary enrichment of potassium, the occurrence of the deepest sub-depression and the appearance of an extremely arid climate in Lop Nur region. These factors have been interacting synergistically since the forming of the saline lake and in the later stages strong ＂vapor extraction＂ caused by extremely arid climate is needed to trigger large scale mineralization of potash deposits.

关键词： Potash formation coupling mechanism provenance tectonics climate Lop Nur Tarim basin

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Fault Zone Fluid Deep-penetrating Techniques for Potash Deposit Prediction in Lanping-Simao Basin,Yunnan,South China

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Acta Geologica Sinica(English Edition) 2014年第S1期88卷 201-202页

作者： BO Ying liu chenglin CAO Yangtong Institute of Mineral Resources Chinese Academy of Geological Sciences

In China,the strategic resource potash is suffering from severe shortages,and the ancient marine solid potash locating is still a problem of long *** now,only the Mengyejing Potash Deposit was found

关键词： fluid deep-penetrating noble gas prediction Lanping-Simao Basin

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Geochemical Characterization of Organic Rich Black Rocks of the Niutitang Formation to Reconstruct the Paleoenvironmental Settings during Early Cambrian Period from Xiangxi Area,Western Hunan,China

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Journal of Earth Science 2023年第6期34卷 1827-1850页

作者： Rizwan Sarwar Awan chenglin liu Ashar Khan Khawaja Hasnain Iltaf Qibiao Zang Yuping Wu Sajjad Ali Muhammad Amar Gul College of Geosciences China University of PetroleumBeijing 102249China State Key Laboratory of Petroleum Resource and Prospecting China University of PetroleumBeijing 102249China Water and Power Development Authority Lahore 54000Pakistan School of Earth and Space Sciences University of Science and TechnologyHefei 230026China

The Niutitang Formation in the South China Block might be a source of hydrocarbon as it contains an enormous quantity of organic *** rock of the Early Cambrian Niutitang Formation is widely distributed in the Yangtze region,but detailed geochemical understanding of it is still *** research discusses the detailed geochemical characteristics of the Niutitang Formation to reconstruct the paleoenvironmental conditions,employing total organic carbon(TOC)content,major,trace,and rare earth element *** this purpose,black rock specimens of the Niutitang Formation from two outcrop sections were utilized for geochemical characterization,and the results compared with another eight sections from the South China *** average total organic carbon in these sediments is significantly higher(5.80 wt.%).In the platform region,lower quantities of TOC indicate a poor potential to produce *** the same time,significantly higher TOC is observed in the deep shelf and slope sediments,indicating a significant potential to produce *** average Ce,Eu and Y anomalies from both Longbizui and Sancha sections studied are 0.74,0.86,1.77,1.07,and 1.19,1.30,*** chemical index of alteration(CAI)throughout the Yangtze block is higher(averaging 71.32)than that of Post Archean Australian Shale(PAAS 69),indicating a moderately weathered source of the Niutitang Formation relative to *** the sediments are moderately weathered,this suggests these rocks might have been derived from felsic rocks,mainly *** normalization of REEs in the black rocks reveals a reduction of light REEs with increase in heavy REEs ***,a positive Eu anomaly,negative Ce anomaly,and a moderate Y/Ho(34.61)are clues to a hybrid depositional mechanism associated with hydrothermal action and terrigenous *** anomalies are also evidence of upwelling in the paleo-ocean and mixing of organic matter,which created anoxic bottom water

关键词： anomaly paleo-ocean paleoenvironment chemical index alteration weathering meta-somatism sediments

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Multiple Dolomitization and Fluid Flow Events in the Precambrian Dengying Formation of Sichuan Basin, Southwestern China

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Acta Geologica Sinica(English Edition) 2018年第1期92卷 311-332页

作者： PENG Bo LI Zongxing LI Guorong liu chenglin ZHU Shifa ZHANG Wang ZUO Yinhui GUO Yingchun WEI Xiaojie Institute of Geomechanics Chinese Academy of Geological Sciences Shandong Provincial Key Laboratory of Depositional Mineralization & Sedimentary Mineral Shandong University of Science and Technology State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Chengdu University of Technology College of Geosciences China University of Petroleum (Beijing)

The Precambrian Dengying Formation is a set of large-scale, extensively dolomitized, carbonate reservoirs occurring within the Sichuan Basin. Petrographic and geochemical studies reveal dolomitization was a direct result of precipitation by chemically distinct fluids occurring at different times and at different intensities. Based on this evidence, dolomitization and multiple fluid flow events are analyzed, and three types of fluid evolution models are proposed. Results of analysis show that Precambrian Dengying Formation carbonates were deposited in a restricted peritidal environment （630- 542 Ma）. A high temperature and high Mg2＋ concentration seawater was a direct result of dolomitization for the micrite matrix, and for fibrous aragonite in primary pores. Geochemical evidence shows low δ18O values of micritic dolomite varying from -1.29%o to -4.52%o PDB, abundant light rare earth elements （REEs）, and low dolomite order degrees. Microbes and meteoric water significantly altered dolomite original chemical signatures, resulting in algal micritic dolomite and the fine-grained, granular, dolosparite dolomite having very negative δ18O values. Finely crystalline cement dolomite （536.3-280 Ma） and coarsely crystalline cement dolomite have a higher crystallization degree and higher order degree. The diagenetic sequence and fluid inclusion evidence imply a linear correlation between their burial depth and homogenization temperatures, which closely resemble the temperature of generated hydrocarbon. Compared with finely crystalline dolomite, precipitation of coarsely crystalline dolomite was more affected by restricted basinal fluids. In addition, there is a trend toward a more negative δ18O value, higher salinity, higher Fe and Mn concentrations, REE-rich. Two periods of hydrothermal fluids are identified, as the exceptionally high temperatures as opposed to the temperatures of burial history, in addition to the presence of high salinity fluid inclusions. The early hydrothe

关键词： Precambrian dolomite geological fluid flow meteoric water hydrothermal activity SichuanBasin

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