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The genesis and resource potential of gold deposits in the Liaodong Peninsula

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Science china earth sciences 2024年第3期67卷 657-672页

作者： Rixiang ZHU jin-Hui YANG gongwen wang Qingdong ZENG Guoqiang XUE Tao XU Xinghui LI Peng ZHANG Da LEI Guang ZHU State Key Laboratory of Lithospheric Evolution Institute of Geology and GeophysicsChinese Academy of SciencesBeijing 100029China school of earth sciences and Resources China University of GeosciencesBeijing 100083China Shenyang Center China Geological SurveyShenyang 110034China school of Resources and Environmental Engineering Hefei University of TechnologyHefei 230009China

Plenty of gold deposits related to Late Mesozoic craton destruction are widely distributed in eastern North china Craton. However, significant differences in research degrees, ore-forming characteristics, and proven reserves exist among different regions in the North china Craton. The Liaodong Peninsula has similar regional geological characteristics to those of the Jiaodong Peninsula, with both experiencing craton destruction during Late Mesozoic, but the two areas have subs{3.tial differences in terms of gold mineralization and the proven gold resources. Based on regional geology, Mesozoic magmatictectonic evolution and ore geology, combined with integrated geophysical exploration and big data AI resource prediction, in this paper, we propose that the ore-forming materials of Late Mesozoic gold deposits in Liaodong were mainly originated from mantle-derived melts and/or fluids induced by craton destruction. The gold deposits were primarily controlled by NE-NNEtrending faults, mainly classified as fracture-controlled altered rock-type and sulfide-bearing quartz vein-type. Moreover, our study predicts that the Yalu River fault zone and its related secondary faults, as well as the periphery and deeper parts of known goldfields, are the impor{3.t regions for future gold resource exploration. The Yalu River metallogenic belt has an enormous potential for gold resources, and the Liaodong Peninsula has a potential to add thousands of tons of gold resources.

关键词： Liaodong Peninsula Gold deposit Integrated geophysical exploration Prospecting potential Direction for prospecting breakthroughs

3. geological Modeling with Multi-source Data Integration in Polymetallic Region:A Case Study of Luanchuan,Henan Province,china

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地学前缘 2009年第S1期16卷 166-167页

作者： gongwen wang~(1,2),Shouting Zhang~(1,2),Changhai Yan~3.Yaowu Song~3.limei wang~1 1.school of {3. sciences and Resources,china university of geosciences(beijing),beijing 100083.china. 2.State Key laboratory of geological Processes and Mineral Resources,china university of geosciences,beijing 100083.china.3.Henan Institute of geological Survey,Zhengzhou 450007,china

The development of 3. geological models involves the integration of large amounts of geological data,as well as additional accessible proprietary lithological, structural,geochemical,geophysical,and borehole ***,the case study area,southwestern Henan Province,is an important molybdenum-tungsten -lead-zinc polymetallic belt in china.

关键词： 3. geological modeling multi-source data mineral exploration metallogenic model virtual geological section Luanchuan polymetallic region

河南围山城金银矿集区三维地质建模与成矿预测

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地学前缘 2024年第3期31卷 245-259页

作者：谷浩杨泽强高猛唐相伟王东晓刘奎松杨树人郭跃闪王云王功文河南省第三地质矿产调查院有限公司河南郑州450000 河南省自然资源科技创新中心(信息感知技术应用研究) 河南郑州450000 中国地质大学(北京)地球科学与资源学院北京100083 中国地质大学(北京)自然资源部战略性金属矿产找矿理论与技术重点实验室北京100083 北京市国土资源信息研究开发重点实验室北京100083

三维建模与成矿预测已成为当前国内外十分流行且较成熟的技术方法。通过研究银洞坡金矿和破山银矿成矿地质特征,对围山城矿集区开展三维可视化模型构建及深部成矿预测。利用82条地质剖面建立了地质体(地层、岩体、矿体)、构造模型,利用1... 详细信息

三维建模与成矿预测已成为当前国内外十分流行且较成熟的技术方法。通过研究银洞坡金矿和破山银矿成矿地质特征,对围山城矿集区开展三维可视化模型构建及深部成矿预测。利用82条地质剖面建立了地质体(地层、岩体、矿体)、构造模型,利用1∶5万重磁数据和63.电测深数据建立了密度、磁化率、电阻率等地球物理模型,利用52条岩石剖面、614个钻孔、117个探槽、56个浅井及94个平硐数据建立了地球化学模型,实现了地、物、化数据的综合集成。以“三位一体”找矿预测理论为指导,建立了研究区岩浆热液型Au、Ag矿床三维定量预测模型,确定了Au、Ag矿床成矿有利信息变量;采用证据权法提取了预测变量的权重值和相关程度,选择合适的变量进行成矿预测,利用C-V分形确定阈值,圈定了6个找矿靶区,选择新庄预测靶区(A 1)进行钻孔验证,发现金矿体6条,充分证明了利用证据权法进行三维成矿预测具有可行性与科学性,圈定的靶区对矿山进行深边部隐伏矿体找矿具有重要的实践意义。

关键词：围山城矿集区多源数据三维地质建模证据权法成矿预测

Resource prediction and assessment based on 3./4D big data modeling and deep integration in key ore districts of North china

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Science china earth sciences 2021年第9期64卷 1590-1606页

作者： gongwen wang Zhiqiang ZHANG Ruixi LI Junjian LI Deming SHA Qingdong ZENG Zhenshan PANG Dapeng LI Leilei HUANG school of earth sciences and Resources China University of Geosciences(Beijing)Beijing100083China Tianjin geological Survey Center of china geological Survey Tianjin300170China Shenyang geological Survey Center of china geological Survey Shenyang110000China Key Laboratory of Mineral Resources Institute of Geology and GeophysicsChinese Academy of SciencesBeijing100029China Institutions of earth Science Chinese Academy of SciencesBeijing100029China College of earth and Planetary sciences University of Chinese Academy of SciencesBeijing100049China Development Research Center of china geological Survey Beijing100037China Shandong Academy of geological sciences Jinan250013China

The North china district has been subjected to significant research with regard to the ore-forming dynamics,processes,and quantitative forecasting of gold deposits;it accounts for the highest number of gold reserves and annual products in *** on the top-level design of geoscience theory and the method adopted by the National Key R&D Project(deep process and metallogenic mechanism of North china Craton(NCC)metallogenic system),this paper systematically collects and constructs the geoscience data(district,camp,and deposit scales)in four key gold districts of North china(Jiaojia-Sanshandao,Southern Zhaoping,Wulong,and Qingchengzi).The settings associated with the geological dynamics of gold deposits were quantitatively and synthetically analyzed,namely:NCC destruction,metallogenic events,genetic models,and exploration ***-dimensional(3.)and four-dimensional(4D)geological modeling was performed using the big data on the districts,while the district-scale 3. exploration criteria were integrated to construct a quantitative exploration *** them,FLAC3. modelling and the geo Cube software(version 3.0)were used to implement the numerical simulation of the 3. geological models and the constraints of the fluid saturation parameters of the Jiaojia fault to reconstruct the 4D fault structure models of the Jiaojia fault(with a depth of 5000 m).Using geo Cube3.0,multiple integration modules(general weights of evidence(Wof E),Boost Wof E,Fuzzy Wof E,Logistic Regression,Information Entropy,and Random Forest)and exploration criteria were integrated,while the C-V fractal classification of A,B and C targets in four districts was carried *** research results are summarized in the following four areas:(1)Four gold districts in the study area have more than three targets(the depth is 3.00 m),and the class A,B and C targets exhibit a good spatial correlation with gold bodies that are controlled by mining engineering at depths greater than 1000 m.(2)The Boost Wof

关键词： geoscience big data 3./4D modeling Weights of evidence Random forest Target optimization and resources assessment Gold district in North china

Late Mesozoic magmatism in the East Qinling Orogen, china and its tectonic implications

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geoscience Frontiers 2019年第5期10卷 1803-1821页

作者： Fan Yang Fei Xue M. Santosh gongwen wang Sung Won Kim Zhiwei Shen Wenjuan Jia Xuhuang Zhang school of earth sciences and Resources China University of Geosciences Beijing29 Xueyuan RoadBeijing 100083China Graduate school of Life and Environmental sciences University of TsukubaIbaraki305-8572Japan Department of earth sciences School of Physical SciencesThe University of AdelaideSA 5005Australia State Key Laboratory of Continental Dynamics Department of GeologyNorthwest UniversityNorthern Taibai Str. 229Xi’an 710069China geological Research Division Korea Institute of Geoscience and Mineral ResourcesDaejeon305-350Republic of Korea Xinjiang Zijin Zinc Industry Co. LtdKezhou 845450China Luanchuan Bureau of geology and Resources Luoyang 417500China

The Qinling Orogen in Central china records the history of a complex geological evolution and tectonic transition from compression to extension during the Late Mesozoic,with concomi{3.t voluminous granitoids *** this study,we present results from petrological,geochemical,zircon U-Pb-Lu-Hf isotopic studies on the Lengshui felsic dykes from Luanchuan region in the East Qinling *** also compile published geochronological,geochemical,and Hf isotopic data from Luanchuan region and present zircon Hf isotopic contour *** newly obtained age data yield two group of ages at w145 Ma and 140 Ma for two granite porphyries from the Lengshui felsic dykes,with the w145 Ma interpreted as response to the peak of magmatism in the region,and the w140 Ma as the timing of formation of the felsic *** corresponding Hf isotopic data of the granite porphyries display negative εHf(t) values of e16.67 to e4.61,and Hf crustal model ages (TDM^C) of 2255e1490 Ma,indicating magma sourced from the melting of Paleo- to Mesoproterozoic crustal *** compiled age data display two major magmatic pulses at 160e13. Ma and 111e108 Ma with magmatic quiescence in between,and the zircon Hf isotopic data display εHf(t) values ranging from e41.9 to 2.1 and TDM^C values of 3.87e103. Ma,suggesting mixed crustal and mantle-derived components in the magma source,and correspond to multiple tectonic events during the Late *** Luanchuan granitoids are identified as I-type granites and most of these are highly fractionated granites,involving magma mixing and mingling and crystal *** tectonic setting in the region transformed from the Late Jurassic syn-collision setting to Early Cretaceous within-plate setting,with EeW extension in the Early *** extension is correlated with the NeS trending post-collisional extension between the North china Craton and Yangtze Craton as well as the EeW trending back-arc extension triggered by the westward Paleo-Pacific

关键词： Petrology geochemistry Zircon U-Pb-Lu-Hf isotopes Zircon Hf isotopic mapping Luanchuan region East Qinling Orogen

Timing of formation of the Hongdonggou Pb-Zn polymetallic ore deposit,Henan Province,china:Evidence from Rb-Sr isotopic dating of sphalerites

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geoscience Frontiers 2017年第3期8卷 605-616页

作者： Fan Yang gongwen wang Huawen Cao Ruixi Li Li tang Yufeng Huang Hao Zhang Fei Xue Wenjuan Jia Nana Guo school of earth sciences and Resources China University of Geosciences Beijing29 Xueyuan RoadBeijing 100083China Chengdu Center China Geological SurveyChengdu 610081China Luanchuan Bureau of geology and Resources Luoyang 417500China

The Hongdonggou Pb-Zn polymetallic ore deposit, located in the southwestern part of the Luanchuan Mo-W-Pb-Zn-Ag polymetallic ore mineralization in Henan Province, china, is an important part of the East Qinling metallogenic belt. The orebodies in the deposit, which are vein, bedded and lenticular, are mainly hosted in the syenite porphyry, and formed within the carbonate and clastic rocks of the Yuku and Qiumugou formations partially. The genesis of the deposit has previously been argued to be of hydrothermal-vein type or of skarn-hydrothermal type. In this study, we report the results of Rb-Sr isotopic dating based on sphalerites from the main orebody of the Hongdonggou Pb-Zn polymetallic ore deposit, which yield an isochron age of 13..7 ± 3.2 Ma, constraining the timing of mineralization as early Cretaceous. The age is close to those reported for the Pb-Zn deposits in the Luanchuan ore belt. The （87Sr/86Sr）i values of the sphalerites （0.71127± 0.00010） are lower than that of terrigenous silicates （0.720） and higher than the mantle （0.707）, suggesting that the metallogenic components were mainly derived through crust-mantle mixing. Combining the results from this study with those from previous work, we propose that the Hongdonggou Pb-Zn polymetallic ore deposit is a hydrothermal-vein deposit associated with the early Cretaceous tectonothermal event, and the mineralization is controlled by NW- and near EW-trending faults in the Luanchuan Mo-W-Pb-Zn-Ag polymetallic ore concentration belt.

关键词： Sphalerite Rb-Sr geochronology Metallogeny Pb-Zn deposit Crust-mantle interaction Luanchuan ore belt

河南栾川西沟铅锌银金矿床三维地质建模与深部找矿预测评价

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地学前缘 2021年第3期28卷 156-169页

作者：贾然王浩然王功文王皓许荣达冯占奎宋要武王肖凌庞宗中国地质大学(北京)地球科学与资源学院北京100083 西南大学地理科学学院重庆400715 栾川中洲九鼎矿业有限公司河南洛阳471500 河南省地质调查院河南郑州450001

随着矿区浅部矿的日益减少,深部找矿越来越受到重视,三维地质建模技术在成矿预测、资源定量评价等方面得到了广泛的应用。本文利用三维地质建模平台GOCAD中的三维建模技术及地质统计学等方法,基于收集测试得到的地质图、钻孔和采样点的... 详细信息

随着矿区浅部矿的日益减少,深部找矿越来越受到重视,三维地质建模技术在成矿预测、资源定量评价等方面得到了广泛的应用。本文利用三维地质建模平台GOCAD中的三维建模技术及地质统计学等方法,基于收集测试得到的地质图、钻孔和采样点的地层、岩性、构造、品位等数据,构建了西沟铅锌银金矿区的三维地质模型,包括断裂构造模型、矿体模型及地层模型等,并且通过离散光滑插值及克里金插值等方法建立了西沟铅锌银金矿区的三维属性模型,完成了矿区3.找矿预测靶区的圈定与评价。基于地质认识及建立的矿区三维地质模型的研究认为:(1)该矿床的找矿有利标志主要为地层、构造、辉长岩以及品位指示等4个方面;(2)基于三维地质建模技术的找矿预测方法科学有效;(3.S13.矿体的中部及东南部深部仍有找矿潜力。本文能够为将来的深部找矿突破提供一定的参考依据。

关键词：三维地质建模成矿预测三维品位模型深部找矿西沟铅锌银金矿区

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成矿模式与找矿模式研究的现代科学技术

地学前缘 2021年第3期28卷 295-308页

作者：曾庆栋底青云薛国强王功文荆林海中国科学院地质与地球物理研究所中国科学院矿产资源研究重点实验室北京100029 中国科学院地球科学研究院北京100029 中国科学院大学北京100049 中国科学院地质与地球物理研究所中国科学院页岩气与地质工程重点实验室北京100029 中国地质大学(北京)地球科学与资源学院北京100083 中国科学院遥感与数字地球研究所北京100094

为保障资源的可持续发展,地下深部资源勘探与开发是当前国内外许多国家重要的战略选择。地下深部是否存在优质矿产资源研究是开展深部找矿的前提。理想的成矿模式对指导找矿模式的构建具有重要的理论意义,而合理找矿模式的建立对于深部... 详细信息

为保障资源的可持续发展,地下深部资源勘探与开发是当前国内外许多国家重要的战略选择。地下深部是否存在优质矿产资源研究是开展深部找矿的前提。理想的成矿模式对指导找矿模式的构建具有重要的理论意义,而合理找矿模式的建立对于深部找矿具有重要的指导意义。随着现代科学技术的持续发展,各种新技术不断用于地质研究及勘探中,使深入理解成矿作用,建立理想的成矿模式成为可能。目前,一些新技术如矿物原位U-Pb定年、原位成分、原位同位素分析等在成矿模式研究中已发挥重要作用,指导人们重新建立新的成矿模式;同样一些地球物理探测技术、地球化学探测技术等也正在找矿模式的建立中发挥重要作用,为深部矿的找寻提供更可靠的依据。因而成矿理论及综合地球物理、综合地球化学等现代科学技术的应用是当前及未来深部矿找矿工作的趋势。

关键词：成矿模式找矿模式矿物微区分析技术地球物理探测技术地球化学探测技术

陕西商丹陈家庄铀矿区花岗岩体和伟晶岩脉的U-Pb年龄、地球化学特征与铀成矿作用

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地学前缘 2019年第5期26卷 270-289页

作者：张帅刘家军袁峰刘刚王功文张宏远张红雨中国地质大学(北京)地质过程与矿产资源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

陕西陈家庄铀矿床是我国北秦岭商州-丹凤伟晶岩型铀矿集区中一个重要的矿床,铀矿体均产于加里东期花岗岩体周边花岗伟晶岩脉与围岩(秦岭群变质杂岩)的接触部位。本文对矿区花岗岩体、花岗伟晶岩脉开展了详细的岩石学、岩石地球化学、锆... 详细信息

陕西陈家庄铀矿床是我国北秦岭商州-丹凤伟晶岩型铀矿集区中一个重要的矿床,铀矿体均产于加里东期花岗岩体周边花岗伟晶岩脉与围岩(秦岭群变质杂岩)的接触部位。本文对矿区花岗岩体、花岗伟晶岩脉开展了详细的岩石学、岩石地球化学、锆石U-Pb年代学研究,进而对其成因、成岩构造环境和铀矿化机理进行了探讨。LA-ICP-MS锆石U-Pb年代学研究表明,黄龙庙黑云母花岗岩体,陈家庄二长花岗岩体和非矿、贫矿、富矿花岗伟晶岩脉的成岩年龄分别为(446±3.Ma、(419±2)Ma、(417±3.Ma、(414±4)Ma和(416±3.Ma。地球化学分析显示:黄龙庙黑云母花岗岩体具有Ⅰ型花岗岩、埃达克质岩特征,源自加厚下地壳的部分熔融,形成于块体碰撞构造环境;陈家庄二长花岗岩体也具有I型花岗岩特征,但源区深度略浅,形成于碰撞后的减压环境。花岗伟晶岩脉与陈家庄二长花岗岩体近于同时形成,且具有亲缘性。铀矿物及富铀黑云母均产于花岗伟晶岩脉中。对比研究揭示,非矿、贫矿、富矿花岗伟晶岩脉地球化学特征和铀赋存状况的差异由同化混染作用程度高低所致。在花岗伟晶岩脉与秦岭群变质杂岩的接触部位,同化混染作用较弱的部位形成的二云母花岗伟晶岩脉仅具有弱的铀富集,同化混染作用较强的部位所形成的富石英、黑云母花岗伟晶岩脉则高度富集铀且构成铀矿体。综合研究表明,花岗伟晶岩脉成岩期后的同化混染作用是铀富集成矿的主导因素。

关键词：秦岭造山带伟晶岩型铀矿床岩石地球化学锆石U-Pb定年加里东期