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Iron Speciation of mud Breccia from the Dushanzi mud volcano in the Xinjiang Uygur Autonomous Region,NW China

Acta Geologica Sinica(English Edition) 2018年第6期92卷 2201-2213页

作者： XU Wang ZHENG Guodong MA Xiangxian Danielle FORTIN David R.HILTON LIANG Shouyun CHEN Zhi HU Guoyi Key Laboratory of Petroleum Resources Gansu Province/Key Laboratory of Petroleum Resources ResearchInstitute of Geology and GeophysicsChinese Academy of SciencesLanzhou 730000China University of Chinese Academy of Sciences Beijing 100049China Department of Earth and Environmental Sciences University of Ottawa25 Templeton St.OttawaOntarioK1N 6N5Canada Scripps Institution of Oceanography University of California San DiegoLa JollaCA 92093-0244USA Key Laboratory of Mechanics on Disaster and Environment in Western China(Lanzhou University) Ministry of EducationLanzhou 730000China CEA Key Laboratory of Earthquake Prediction(Institute of Earthquake Forecasting) China Earthquake AdministrationBeijing 100036China Research Institute of Petroleum Exploration and Development PetroChinaBeijing 100083China

Organic-inorganic interactions occurring in petroleum-related mud volcanoes can help predict the chemical processes that are responsible for methane emissions to the atmosphere. Seven samples of mud breccia directly ejected from one crater were collected in the Dushanzi mud volcano, along with one argillite sample of the original reddish host rocks distal from the crater, for comparison purposes. The mineral and chemical compositions as well as iron species of all samples were determined using XRD, XRF and M?ssbauer spectroscopy, respectively. The results indicate that a series of marked reactions occurred in the mud volcano systems, more specifically in the mud breccia when compared to the original rocks. Changes mainly included:(1) some conversion of clay minerals from smectite into chlorite and illite, and the precipitation of secondary carbonate minerals such as calcite and siderite;(2) silicon depletion and significant elemental enrichment of iron, manganese, magnesium, calcium and phosphorus; and(3) transformation of iron from ferric species in hematite and smectite into ferrous species in siderite, chlorite and illite. These geochemical reactions likely induced the color changes of the original reddish Neogene argillite to the gray or black mud breccia, as a result of reduction of elements and/or alteration of minerals associated with the oxidation of hydrocarbons. Our results also suggest that greenhouse gases emitted from the mud volcanoes are lowered through a series of methane oxidation reactions and carbon fixation(i.e., through carbonate precipitation).

关键词： mud volcano mud breccias iron species organic-inorganic interactions greenhouse gas

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Detection of a mud volcano in the Weitan Banks area of the northern South China Sea

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Journal of Oceanology and Limnology 2024年第5期42卷 1450-1469页

作者： Wei LUO Pin YAN Yanlin WANG Junhui YU Qionghua WAN Zhenbo ZHANG Tao XUE Key Laboratory of Ocean and Marginal Sea Geology South China Sea Institute of OceanologyChinese Academy of SciencesGuangzhou 510301China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China CNOOC International Energy Services(Beijing)Co. Ltd.Beijing 100028China University of Chinese Academy of Sciences Beijing 100049China Oilfield Engineering Research Institute of Geophysics CNOOC Energy Technology and ServicesZhanjiang 524057China

Situated between the petroliferous Cenozoic Zhujiang(Pearl)River Mouth Basin and the mud volcano-rich Mesozoic Dongsha Basin in the middle sector of the northern South China Sea,the Weitan Banks area has been previously mapped as a basement high that is composed of Mesozoic magmatic *** this study,we present several favorable indicators for petroleum geology that were detected from geophysical profiling and benthic sampling in the area.A conspicuous hill was discovered,named“Zhongwei Hill”,~80 m high above the~340 m deep seafloor and~1 km broad,in a depression with more than 7 km thick sedimentary *** Zhongwei Hill was seismically imaged with a mushroom-shaped structure and containing a cake-like crown,fluid flow pipes,and an~10 km broad anticline at ***,the hill represents a source-plumbing-eruption *** gas zones linked to deep fracture were found at or near the *** correlation indicates that the deep strata comprise the Jurassic and Paleogene strata,the major hosts of hydrocarbon source *** addition to the hill,there are number of mounds from which three bottom water samples were collected and the samples are rich in dissolved methane with concentrations high up to~900 nmol/L,much higher than the background level(0.5–2 nmol/L).The benthic samples are rich in coarse sediment clastics,authigenic carbonate nodules,and deep-water habitats likely feeding on methanotrophic *** these observations and the context,we propose that the Zhongwei Hill represents a mud volcano,likely thermally driven,that seeps methane from Jurassic and Paleogene source layers,thus poses a favorable clue for significant hydrocarbon generation capacity in transitional zone of the Zhujiang River Mouth Basin and the Dongsha Basin.

关键词： South China Sea Zhongwei Hill deep-level anticline mud volcano Mesozoic source layer hydrocarbon generation

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Studies on biodiversity and bioprospecting of active mud volcano associated bacteria and actinobacteria from Baratang,Andaman Islands,India

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Systems Microbiology and Biomanufacturing 2023年第2期3卷 339-357页

作者： Balakrishnan Meena Lawrance Anburajan Karankal Aryamol Nambali Valsalan Vinithkumar Gopal Dharani Atal Centre for Ocean Science and Technology for Islands National Institute of Ocean TechnologyMinistry of Earth SciencesGovernment of IndiaDollygunjPort BlairAndaman and Nicobar Islands 744103India Marine Biotechnology Division Ocean Science and Technology for Islands GroupNational Institute of Ocean TechnologyMinistry of Earth SciencesGovernment of IndiaChennaiTamil Nadu 600100India Department of Marine Biology Kerala University of Fisheries and Ocean StudiesKochiKerala 682506India

A total of 79 bacteria and 101 actinobacteria strains were isolated from the sediment samples of the different points of Baratang mud volcano viz.,point of the eruption(M),middle of the volcano(MD),and the dried part of the mud volcano(E).Based on the biochemical and molecular characterization,the isolates were categorized under the phyla Proteobacteria,Firmicutes and Proteobacteria included representatives of Classes Alphaproteobacteria,Gammaproteobacteria and Deltaproteobacteria of 29 genera with 38 distinct ***-eight bacterial strains from four different regions of mud volcano revealed excellent activity for indole-3-acetic acid(IAA)*** antagonistic property,plant growth promoting properties such as IAA production,phosphate,potassium and zinc solubilization were identified in Bacillus megaterium NIOT_MV 31 strain of 38 studied *** this study,we investigated the optimization of IAA production by *** NIOT_MV 31 and its formulation as a plant growth promoter to improve economic and agricultural *** IAA yield was achieved using optimal conditions(42.63 mg/mL)in the presence of optimized tryptophan after 4 days of *** increase in the plant growth parameters were observed to that of control *** of culture conditions resulted in a fourfold increase in IAA production by *** NIOT_MV 31 *** results clearly demonstrated that,*** NIOT_MV 31 holds great potential as a source for IAA production and may be useful for commercial applications.

关键词： mud volcano Plant growth promoter Indole-3-acetic acid Seed germination Bacillus megaterium

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mud volcano: Revealing the Stratigraphy of Kendeng Basin, Indonesia

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Open Journal of Yangtze Oil and Gas 2022年第1期7卷 48-64页

作者： Ardian Novianto Sutanto Suharsono Carolus Prasetyadi Wahyu Hidayat Geological Engineering Department UPN “Veteran” Yogyakarta Indonesia Geophysics Engineering Department UPN “Veteran” Yogyakarta Indonesia

The Kendeng Basin, the major depocenter of the East Java Basin, has been filled with deep-sea clastic volcanic deposits since the Middle Tertiary, which developed into volcanic deposits in the Quaternary. With thick Quaternary volcanic deposits covering almost the entire basin, outcrops are only found in the north, forming a fold-thrust belt structure. The oldest known stratigraphic unit is the early Miocene Pelang Formation, which was deposited in the lower to the upper bathyal zone. Rocks older than the Pelang Formation have not been identified in this basin either from outcrops or drill-hole data. However, the geochemical analysis of oil seepage proves to be different because the oil source rock in Kendeng Basin was interpreted to be of older lithology than the Pelang Formation, indicating a potentially older stratigraphic unit in the Kendeng Basin that has not been revealed to date. mud volcanoes transported rock material from the Kendeng Basin to the surface, uncovering the stratigraphy that has been an enigma. The material in question includes Nummulites limestones, conglomerates, and quartz sandstones. Paleontological analysis results on rock fragments indicate that they belong to the Middle Eocene age, so they are older than the Pelang Formation. mud volcano also carried younger limestones to the surface identified as Miocene Age (equivalent with the Pelang Formation), which were deposited in a middle neritic environment, so they provided information that shallow areas possibly formed a horst-graben structure during the Miocene in the Kendeng Basin. The appearance of Eocene and Miocene rock fragments can be used to complement the stratigraphy and it also provides a potentially new concept of source-reservoir rock in the Kendeng Basin.

关键词： mud volcano Stratigraphy of Kendeng Basin Eosen Sediment

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Studies on the Extraction Methods of Metagenomic DNA from mud volcano in Xinjiang

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Agricultural Science & Technology 2010年第4期11卷 72-74页

作者：李建辉路盼盼张亚平石河子大学生命科学学院新疆石河子832003

[Objective]To seek one effective extraction method of metagenomic DNA from mud volcano.[Method]The metagenomic DNA from mud volcano was extracted by CTAB extraction method,SDS-enzyme method,improved method,reagent kit *** extraction of four kinds of methods were compared.[Result]The extracted rate in reagent sets method was the highest,next was improved method,the extracted quantity in SDS-enzyme method was *** extracted by the improved method was diluted ten times for PCR.[Conclusion]Considering economy and purity,the improved method can be used as one effective extraction method of metagenomic DNA from mud volcano.

关键词： mud volcano Metagenomic DNA Xinjiang

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Chemical geothermometry:application to mud volcanic waters of the Caucasus region

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Frontiers of Earth Science 2020年第4期14卷 738-757页

作者： Olga E.Kikvadze Vasilii Yu.Lavrushin Boris G.Polyak Geological Institute Russian Academy of SciencesMoscow119017Russia Siberian Branch of the RAS V.S.Sobolev Institute of Geology and MineralogyNovosibirsk630090Russia

The generation temperatures of gas-water fluids released from mud volcanoes in different provinces of the Caucasian region have been constrained using Mg/Li(T_(Mg/Li))chemical *** volcanic fluids in the Taman Peninsula(Kerch-Taman mud volcanic province)were generated at temperatures(T_(Mg/Li))from 41℃ to 137℃.The depths of the respective mud reservoirs estimated from T_(Mg/Li) values and local geothermal gradient are in a range of 1.0 to 3.4 km which spans the Maykop Formation of marine *** the South Caspian province,the T_(Mg/Li) values of waters vary from 18℃ to 137℃ and the respective root depths HMg/Li of mud volcanoes range from∼0.85 to 6.5 *** obtained T_(Mg/Li) values for the analyzed mud volcanic waters from Caucasian provinces are in positive correlation with HCO3^(−)contents and water oxygen isotope compositions(δ^(18)OH_(2)O andΔδ^(18)OH_(2)O)and in high negative correlation with Cl^(−).The increase of T_(Mg/Li) toward the Greater Caucasus Range,as well as the lateral T_(Mg/Li) patterns in the Taman and South Caspian mud volcanic provinces,support the idea that mud volcanic fluids generate at temperatures increasing progressively toward the Alpine orogenic belt.

关键词： mud volcano fluid chemical geothermometry stable isotopes Caucasus region

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Bacterial and archaeal communities in saline soils from a Los Negritos geothermal area in Mexico

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Pedosphere 2023年第2期33卷 312-320页

作者： Joseph GUEVARA-LUNA Mario HERNÁNDEZ-GUZMÁN Nina MONTOYA-CIRIACO Luc DENDOOVEN Marina Olivia FRANCO-HERNÁNDEZ Paulina ESTRADA-DE LOS SANTOS María Soledad VÁSQUEZ-MURRIETA Escuela Nacional de Ciencias Biológicas Instituto Politécnico NacionalCiudad de México 11340(Mexico) Laboratory of Soil Ecology CinvestavMexico City 07360(Mexico) Centro Tlaxcala de Biología de la Conducta Universidad Autónoma de Tlaxcala.Carretera Federal Tlaxcala-Puebla km.1.5Tlaxcala 90070(Mexico) Unidad Profesional Interdisciplinaria de Biotecnología Instituto Politécnico NacionalCiudad de México 07340(Mexico)

In recent years,there has been a growing need to understand how salinity affects microbial communities in agricultural *** and bacterial community diversities and structures were investigated by high-throughput sequencing analysis of their 16S rRNA in two arable soils with low electrical conductivity(EC)(2.3 and 2.6 dS m^(-1))and a saline soil(EC=17.6 dS m^(-1)).The dominant bacterial phyla in the soils were Proteobacteria(relative abundance(RA)=46.2%),followed by Acidobacteria(RA=13.1%)and Actinobacteria(RA=10.0%),whereas Serratia(RA=6.0%)and Bacillus(RA=4.0%)were the dominant bacterial *** Nitrososphaera(53.5%)was the dominant archaeal phylotype in the arable soils,whereas Nitrosopumilus(RA=0.4%)dominated in the saline *** archaeal and bacterial community structures were different between the soils and significantly correlated with soil sand,arsenic,barium,and antimony contents,but not with soil salinity.

关键词： agricultural soil compositional approach microbial community mud volcano soil salinity soluble anion

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Report of epibenthic macrofauna found from Haima cold seeps and adjacent deep-sea habitats,South China Sea

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Marine Life Science & Technology 2021年第1期3卷 1-12页

作者： Dong Dong Xinzheng Li Mei Yang Lin Gong Yang Li Jixing Sui Zhibin Gan Qi Kou Ning Xiao Junlong Zhang Institute of Oceanology Chinese Academy of SciencesQingdao 266071China Center for Ocean Mega-Science Chinese Academy of SciencesQingdao 266071China University of Chinese Academy of Sciences Beijing 100049China Laboratory for Marine Biology and Biotechnology Pilot National Laboratory for Marine Science and Technology(Qingdao)Qingdao 266237China

This work reports on a preliminary taxonomic study of epibenthic macroinvertebrates collected or observed by underwater video at the Haima cold seeps and in adjacent deep-sea habitats,including a mud volcano feld and Ganquan Plateau,during an expedition in the South China Sea by the Chinese-manned submersible Shenhai Yongshi in May 2018.A total of 41 species belonging to 6 phyla were identifed,among which 34 species were collected from the Haima cold *** and crustaceans that are specialized in reducing habitats were predominant in biotopes of the Haima cold seeps,whereas sponges and cold-water corals and their commensals were prominent in communities of the mud volcano feld and the slopes of Ganquan *** distribution and faunal composition of each taxonomic group are discussed.

关键词： Cold seep mud volcano Ganquan plateau Epibenthic macroinvertebrates Faunal composition South China Sea

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Diapir structure and its constraint on gas hydrate accumulation in the Makran accretionary prism, offshore Pakistan

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China Geology 2020年第4期3卷 611-622页

作者： Zhen Zhang Gao-wen He Hui-qiang Yao Xi-guang Deng Miao Yu Wei Huang Wei Deng Syed Waseem Haider Naimatullah Sohoo Noor Ahmed Kalhoro Ministry of Natural Resources Key Laboratory of Marine Mineral Resources Guangzhou Marine Geological SurveyChina Geological SurveyMinistry of Natural ResourcesGuangzhou 510760China Southern Marine Science and Engineering Guangdong Laboratory(Guangzhou) Guangzhou 511458China National Institute of Oceanography Karachi 75600Pakistan

The Makran accretionary prism is located at the junction of the Eurasian Plate,Arabian Plate and Indian Plate and is rich in natural gas hydrate(NGH)*** consists of a narrow continental shelf,a broad continental slope,and a deformation *** continental slope can be further divided into the upper slope,middle slope,and lower *** are three types of diapir structure in the accretionary prism,namely mud diapir,mud volcano,and gas chimney.(1)The mud diapirs can be grouped into two types,namely the ones with low arching amplitude and weak-medium activity energy and the ones with high arching amplitude and medium-strong activity *** mud diapirs increase from offshore areas towards onshore areas in general,while the ones favorable for the formation of NGH are mainly distributed on the middle slope in the central and western parts of the accretionary prism.(2)The mud volcanoes are mainly concentrated along the anticline ridges in the southern part of the lower slope and the deformation front.(3)The gas chimneys can be grouped into three types,which are located in piggyback basins,active anticline ridges,and inactive anticline ridges,*** are mainly distributed on the middle slope in the central and western parts of the accretionary prism and most of them are accompanied with thrust *** gas chimneys located at different tectonic locations started to be active at different time and pierced different *** mud diapirs,mud volcanoes,and gas chimneys and thrust faults serve as the main pathways of gas migration,and thus are the important factors that control the formation,accumulation,and distribution of NGH in the Makran accretionary *** diapir/gas chimney type hydrate develop in the middle slope,mud volcano type hydrate develop in the southern lower slope and the deformation front,and stepped accretionary prism type hydrate develop on the central and northern lower *** middle slope,lower slope and deformation f

关键词： Natural gas hydrate mud diapir mud volcano Gas chimney Makran accretionary prism Marine geological survey engineering Offshore Pakistan

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