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Discussion on "sandwich"structures and preservation conditions of shale gas in the South Yellow Sea Basin

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china geology 2018年第4期1卷 485-492页

作者： Jian-qiang Wang Jian-ming Gong Li zhang Hai-yan Cheng Jing Liao Jian-wen Chen Jing Su Chuan-sheng Yang Qingdao institute of Marme geology CGSQingdao 266071China Laboratory for Marme Mineral Resource Qingdao Pilot National Laboratory for Marme Science and TechnologyQingdao 266071China Guangzhou Marine Geological Survey Guangzhou 510760China Qingdao Geological Exploration institute of china Metallurgical geology Bureau Qingdao 266071China 不详

In order to make a breakthrough in Mesozoic-Paleozoic shale gas exploration in the South Yellow Sea Basin,a comparison of the preservation conditions was made within the Barnett shale gas reservoirs in the Fortworth Basin,the Jiaoshiba shale gas reservoirs in Sichuan Basin and potential shale gas reservoirs in Guizhou *** results show that the "Sandwich"structure is of great importance for shale gas *** to,the "Sandwich"structure is a kind of special reservoir-cap rock assemblage which consist of limestone or dolomite on the top,mudstone or shale layer in the middle and limestone or dolomite at the *** consideration of the Mesozoic-Paleozoie in the Lower Yangtze,and Laoshan Uplift with weak Paleozoic deformation and thrust fault sealing On both flanks of the Laoshan Uplift,a conclusion can be drawn that the preservation conditions of shale gas probably developed "Sandwich" structures in the Lower Cambrian and Permian,which are key layers for the breakthrough of shale gas in the South Yellow ***,the preferred targets for shale gas drilling probably locate at both flanks of the Laoshan Uplift.

关键词： "Sandwich"structure Preservation conditions Shale gas Laoshan Uplift South Yellow Sea

Source analysis and risk evaluation of heavy metal in the river sediment of polymetallic mining area:Taking the Tonglüshan skarn type Cu-Fe-Au deposit as an example,Hubei section of the Yangtze River Basin,china

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china geology 2022年第4期5卷 649-661页

作者： Jing Wang Xin-xin zhang Ai-fang Chen Bo Wang Qi-bin Zhao Guan-nan Liu Xiao Xiao Jin-nan Cao chinese academy of Geological sciences China Geology SurveyMinistry of Natural ResourcesBeijing 100037China Key Laboratory of Strategic Mineral Resources of the Upper Yellow River Ministry of Natural ResourcesLanzhou 730046China chinese academy of Natural Resources Economics Beijing 101149China Key Laboratory for Mineralization and Resource Evaluation of Ministry of Natural Resources Institute of Mineral Resources of Chinese Academy of Geological SciencesBeijing 100037China

In this paper,25 sampling points of overlying deposits in Tonglushan mining area,Daye City,Hubei Province,china were tested for heavy metal content to explore pollution characteristics,pollution sources and ecological risks of heavy metals in sediments.A geo-accumulation index method was used to evaluate the degree of heavy metal pollution in the *** mean sediment quality guideline quotient was used for evaluating the ecological risk level of heavy metal in the *** a method of correlation analysis,clustering analysis,and principal component analysis was used for preliminary analysis on the source of heavy metal in the *** was indicated that there was extremely heavy metal pollution in the sediment,among which Cd was extremely polluted,Cu strongly contaminated,Zn,As,and Hg moderately contaminated,and Pb,Cr,and Ni were slightly *** was also indicated by the mean sediment quality guideline-quotient result that there was a high ecological risk of heavy metals in the sediment,and 64%of the sample sites had extremely high hidden biotoxic *** distribution,the contamination of branches was worse than that of the main channel of Daye Dagang,and the deposition of each heavy metal was mainly influenced by the distance from this sample site to the sewage draining exit of a tailings *** source analysis showed that the heavy metals in the sediment come from pollution discharging of mining and beneficiation companies,tailings ponds,smelting companies,and transport *** the study area,due to the influence of heavy metal discharging from these sources,the ecotoxicity of heavy metals in the sediment was extremely high,and Cd was the most toxic *** research figured out the key restoration area and elements for ecological restoration in the sediment of the Tonglüshan mining area,which could be referenced by monitoring and governance of heavy metal pollution in the sediment of the polymetallic mining area.

关键词： Sediment Heavy metal pollution Ecological risks Geo-accumulation index method Sediment quality guideline-quotient Cluster analysis Principal component analysis Skarn-type Ecological environment survey Tonglüshan Daye Lake china

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济阳坳陷页岩油富集要素及地质甜点类型划分

科学技术与工程 2021年第2期21卷 504-511页

作者：张顺中国石化胜利油田分公司勘探开发研究院东营257015

为了明确济阳坳陷页岩油富集主要控制因素,对甜点类型进行合理划分,以济阳坳陷页岩系统取芯井获取的大量地层、地化测试资料为重要研究基础,结合产能,落实了控制页岩油高产富集的主要因素,划分了页岩油地质甜点类型。结果表明:富含碳酸... 详细信息

为了明确济阳坳陷页岩油富集主要控制因素,对甜点类型进行合理划分,以济阳坳陷页岩系统取芯井获取的大量地层、地化测试资料为重要研究基础,结合产能,落实了控制页岩油高产富集的主要因素,划分了页岩油地质甜点类型。结果表明:富含碳酸盐矿物的富有机质纹层状页岩是济阳坳陷页岩油储集的最有利岩相;岩相(组合)、埋深和成岩演化,地层压力以及烃类流体性质(原油密度和黏度)是控制页岩油富集高产的关键因素;页岩油高产富集要素之间关系密切,中高演化程度、高孔隙度发育带与游离油窗吻合(3200~3800 m);页岩油地质甜点划分充分考虑了页岩油富集、可动及高产要素,在原本页岩油类型划分的基础上,使页岩油类型更加具体,采取生油-储油-产油等因素先后排列的顺序进行命名,突出了夹层在济阳坳陷页岩油勘探开发中的重要作用。

关键词：济阳坳陷古近系页岩油岩相地质甜点

内蒙古多伦县义盛店火山岩型铀多金属矿综合信息找矿模型

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华北地质 2024年第3期47卷 46-53,73页

作者：王建青刘洋闫国强于达刘钧沅徐如磊蔡童张晓鹏天津华北地质勘查总院天津300170 天津华北地质勘查局核工业247大队天津301800 中国地质调查局天津地质调查中心(华北地质科技创新中心) 天津300170

【研究目的】义盛店铀多金属矿(化)体赋存于西干沟破火山机构附近的晚侏罗世满克头鄂博期次火山岩体中,主要受NW-NNW向断裂构造与次流纹岩体内隐爆角砾岩带的结合部位控制,研究并建立该矿床综合信息找矿模型对指导成矿带找矿意义重大。... 详细信息

【研究目的】义盛店铀多金属矿(化)体赋存于西干沟破火山机构附近的晚侏罗世满克头鄂博期次火山岩体中,主要受NW-NNW向断裂构造与次流纹岩体内隐爆角砾岩带的结合部位控制,研究并建立该矿床综合信息找矿模型对指导成矿带找矿意义重大。【研究方法】本文在研究该地区铀成矿地质条件,成矿地质体、成矿构造与成矿结构面、成矿作用特征标志的基础上,结合矿区土壤地球化学特征和激电、伽马能谱、活性炭及静电α异常特征信息开展了系统综合研究工作。【研究结果】通过研究建立了矿区地质找矿模式,归纳并总结了矿区成矿主要受火山构造控制和土壤地球化学异常区与低电阻率高极化体异常及具有深穿透放射性形成的几何形态异常等物化探找矿标志,构建了该区地质-地球化学-地球物理“三位一体”的综合信息找矿模型。【结论】研究认为在义盛店矿区断裂破碎带、次火山岩接触带与隐爆角砾岩构造的叠加部位,地球化学异常与地球物理异常区相吻合地段,存在形成中-大型铀多金属矿床的潜力,并应用模型指导找矿取得了新突破。

关键词：义盛店铀多金属矿隐爆角砾岩找矿模型

Optimal bandwidth selection for retrieving Cu content in rock based on hyperspectral remote sensing

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Journal of Arid Land 2022年第1期14卷 102-114页

作者： MA Xiumei ZHOU Kefa WANG Jinlin CUI Shichao ZHOU Shuguang WANG Shanshan zhang Guanbin State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Xinjiang Key Laboratory of Mineral Resources and Digital geology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Xinjiang Research Centre for Mineral Resources Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China University of chinese academy of sciences Beijing 100049China Xinjiang academy of Science and Technology for Development Strategy Urumqi 830011China

Hyperspectral remote sensing technology is widely used to detect element contents because of its multiple bands,high resolution,and abundant *** researchers have paid considerable attention to selecting the optimal bandwidth for the hyperspectral inversion of metal element contents in rocks,the influence of bandwidth on the inversion accuracy are *** this study,we collected 258 rock samples in and near the Kalatage polymetallic ore concentration area in the southwestern part of Hami City,Xinjiang Uygur Autonomous Region,china and measured the ground spectra of these *** original spectra were resampled with different bandwidths.A Partial Least Squares Regression(PLSR)model was used to invert Cu contents of rock samples and then the influence of different bandwidths on Cu content inversion accuracy was *** to the results,the PLSR model obtains the highest Cu content inversion accuracy at a bandwidth of 35 nm,with the model determination coefficient(R^(2))of *** PLSR inversion accuracy is relatively unaffected by the bandwidth within 5-80 nm,but the accuracy decreases significantly at 85 nm bandwidth(R^(2)=0.5473),and the accuracy gradually decreased at bandwidths beyond 85 ***,bandwidth has a certain impact on the inversion accuracy of Cu content in rocks using the PLSR *** study provides an indicator argument and theoretical basis for the future design of hyperspectral sensors for rock geochemistry.

关键词： hyperspectral remote sensing Cu element bandwidth Partial Least Squares Regression inversion accuracy Kalatage polymetallic ore concentration area

Estimation of rock Fe content based on hyperspectral indices

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Journal of Arid Land 2021年第12期13卷 1287-1298页

作者： WANG Jinlin WANG Wei CHENG Yinyi zhang Zhixin WANG Shanshan ZHOU Kefa LI Pingheng State Key Laboratory of Desert and Oasis Ecology Xinjiang Institute of Ecology and GeographyChinese Academy of SciencesUrumqi 830011China Xinjiang Key Laboratory of Mineral Resources and Digital geology Urumqi 830011China Xinjiang Research Centre for Mineral Resources Chinese Academy of SciencesUrumqi 830011China University of chinese academy of sciences Beijing 100049China Zhejiang A&F University Hangzhou 311300China

Information on the Fe content of bare rocks is needed for implementing geochemical processes and identifying ***,the influence of Fe content on the spectra of bare rocks has not been thoroughly analyzed in previous *** Saur Mountain region within the Hoboksar of the Russell Hill depression was selected as the study ***,we analyzed six hyperspectral indices related to rock Fe content based on laboratory measurements(Dataset I)and field measurements(Dataset II).In situ field measurements were acquired to verify the laboratory *** content of the rock samples collected from different fresh and weathered rock surfaces were divided into six levels to reveal the spatial distributions of Fe content of these *** addition,we clearly displayed wavelengths with obvious characteristics by analyzing the spectra of these *** results of this work indicated that Fe content estimation models based on the fresh rock surface measurements in the laboratory can be applied to in situ field or satellite-based measurements of Fe content of the weathered rock *** is not the best way to use only the single wavelengths reflectance at all absorption wavelengths or the depth of these absorption features to estimate Fe *** on sample data analysis,the comparison with other indices revealed that the performance of the modified normalized difference index is the best indicator for estimating rock Fe content,with R2 values of 0.45 and 0.40 corresponding to datasets I and II,***,the modified normalized difference index(the wavelengths of 2220,2290,and 2370 nm)identified in this study could contribute considerably to improve the identification accuracy of rock Fe content in the bare rock *** method proposed in this study can obviously provide an efficient solution for large-scale rock Fe content measurements in the field.

关键词： bare rocks Fe content reflectance spectral indices modified normalized difference index Saur Mountain

淮河能源矿区煤矸石理化性质及资源化利用分析

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煤炭加工与综合利用 2024年第7期 121-126页

作者：方恩才王传兵刘威程海燕王昌济章梅赵恒李建淮南矿业(集团)有限责任公司深部煤炭安全开采与环境保护全国重点实验室安徽淮南234000 安徽理工大学安徽淮南232001 江苏地质矿产设计研究院(中国煤炭地质总局检测中心) 江苏徐州221006 中国煤炭地质总局煤系矿产资源重点实验室江苏徐州221006

系统分析了淮河能源矿区煤矸石的物理化学特征,为煤矸石高质量综合利用和矿山环境治理提供技术支撑。通过采集煤矿的煤矸石,测定其化学组成、矿物成分、稀土含量、重金属含量等,分析煤矸石理化特征,结果表明:淮河能源矿区煤矸石为硅铝... 详细信息

系统分析了淮河能源矿区煤矸石的物理化学特征,为煤矸石高质量综合利用和矿山环境治理提供技术支撑。通过采集煤矿的煤矸石,测定其化学组成、矿物成分、稀土含量、重金属含量等,分析煤矸石理化特征,结果表明:淮河能源矿区煤矸石为硅铝型煤矸石,矿物组成主要有石英和粘土矿物,G3矿中Fe_(2)O_(3)含量为11.16%,为高铁型煤矸石;CaO、MgO含量较低,在建筑材料具有较高的利用价值;SiO_(2)、Al_(2)O_(3)的含量较高,可用于生产水泥或制备硅系、铝系产品;矸石中速效钾的含量达一级二级标准,可作钾肥;G3、G9有机质含量高,可用于农田改良,提升土壤肥力。矿区煤矸石中稀土元素含量均高于世界煤,其中,G8、G9矸石中镧、铈含量分别为中国煤含量的3.15、2.98倍,具有提取利用价值;煤矸石8种重金属的最大值远低于风险筛选值,对农作物生长和土壤生态环境风险低。

关键词：淮河能源矿区煤矸石理化特征资源化利用分析

寒武纪幸运期刺胞动物意外秦钵水母(Qinscyphus necopinus)的种内变异

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微体古生物学报 2022年第3期39卷 213-222页

作者：张华侨现代古生物学和地层学国家重点实验室中国科学院南京地质古生物研究所和生物演化与环境卓越创新中心南京210008

华南寒武纪幸运期小壳化石生物群中已经报道了丰富多样的刺胞动物胚胎和幼年个体。以往的研究主要关注它们的解剖结构、个体发育、亲缘关系和演化意义,较少关注它们的种内变异。本文报道了来自陕南西乡县大河镇张家沟剖面寒武系幸运阶... 详细信息

华南寒武纪幸运期小壳化石生物群中已经报道了丰富多样的刺胞动物胚胎和幼年个体。以往的研究主要关注它们的解剖结构、个体发育、亲缘关系和演化意义,较少关注它们的种内变异。本文报道了来自陕南西乡县大河镇张家沟剖面寒武系幸运阶宽川铺组的刺胞动物意外秦钵水母(Qinscyphus necopinus)的幼年个体新材料。意外秦钵水母的围鞘上发育着细密的环纹和纵跨数个环纹的三角隆起。三角隆起每5个形成规则的1圈,均匀分布形成规则的5纵列,赋予秦钵水母五辐射对称的特征。新材料显示,在个别标本上同圈不同列的三角隆起可以错位生长,不形成规则的一圈。这些具有不规则排列三角隆起的个体可能为意外秦钵水母的种内变异个体,它们揭示了秦钵水母的水螅体在分泌建造围鞘的过程中具有各向不均衡性。

关键词： Qinscyphus 橄榄蛋科刺胞动物种内变异宽川铺组寒武系幸运阶

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基于虚拟样本生成的致密砂岩储层参数预测

矿产与地质 2024年第1期38卷 195-204页

作者：韩旭东张广智刘飞郭彦民刘太伟杜磊朱孔斌徐帅中国石油大学(华东)深层油气重点实验室山东青岛266580 中国石油大学(华东)地球科学与技术学院山东青岛266580 中国石油天然气股份有限公司辽河油田分公司勘探开发研究院辽宁盘锦124010

由于孔渗统计回归和测井解释方法在致密砂岩储层参数预测中表现不佳,人工智能方法被广泛应用于致密砂岩储层参数预测中。然而,可用的岩心数据很难满足人工智能大量学习样本的要求。因此,提出了基于高斯混合模型的虚拟样本生成方法,以解... 详细信息

由于孔渗统计回归和测井解释方法在致密砂岩储层参数预测中表现不佳,人工智能方法被广泛应用于致密砂岩储层参数预测中。然而,可用的岩心数据很难满足人工智能大量学习样本的要求。因此,提出了基于高斯混合模型的虚拟样本生成方法,以解决缺乏训练样本的问题。该算法的通过拟合原始样本的分布来生成虚拟样本,填充了小样本数据之间的信息缺失。通过标准函数测试,该方法能有效生成训练数据,实际工区孔隙度和渗透率预测对比试验表明,经过虚拟样本扩充数据集后,模型的预测准确率分别提高了9.7%和18.6%,表明所提出的方法可以有效地提高小样本条件下的模型预测精度。

关键词：储层参数预测高斯混合模型虚拟样本生成深度学习