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Cooling History of Mesozoic Magmatism and Implications for Large-Scale Gold Mineralization in the Jiaodong Peninsula, East China: Constraints from T-t Paths Determined by U-Pb Thermochronology of Zircon and Apatite

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Journal of Earth Science 2024年第3期35卷 878-889页

作者： Guangyan Zhou mingchun song Long Li Yan Luo DGraham Pearson Jianbo Zhou Zhengjiang Ding Xuefeng Yu Yingxin song Jie Li Shiyong Li Faculty of Earth Sciences China University of GeosciencesWuhan 430074China Department of Earth&Atmospheric Sciences University of AlbertaEdmontonAlberta T6G 2E3Canada Hebei Key Laboratory of Strategic Critical Mineral Resources Hebei GEO UniversityShijiazhuang 050031China Shandong Provincial No.6 Exploration Institute of Geology and Mineral Resources Weihai 264209China College of Earth Sciences Jilin UniversityChangchun 130061China Ministry of Natural Resources Key Laboratory of Gold Mineralization Processes and Resources Utilization Key Laboratory of Metallogenic-Geologic Processes and Comprehensive Utilization of Minerals Resources in Shandong ProvinceShandong Institute of Geological SciencesJinan 250013China Shandong Nuclear Industry Geological Group 273 Yantai 264006China

The Mesozoic intrusions of the Jiaodong Peninsula,eastern China,host giant gold *** the genesis of these deposits requires the determination of the source of the parental auriferous fluid and the timing of gold mineralization,which are strongly influenced by the cooling/uplift histories of the hosting *** performed an integrated U-Pb geochronology study on both zircon and apatite from four major magmatic episodes of the Jiaodong *** zircon and apatite U-Pb ages are 156.9±1.2 and 137.2±2.4 Ma for the Linglong intrusion,129.9±1.0 and 125.0±3.8 Ma for the Qujia intrusion,119.5±0.7 and 117.2±1.8 Ma for the Liulinzhuang intrusion,118.6±1.0 and 111.6±1.6 Ma for the Nansu intrusion,*** coupled zircon and apatite data of these granitoids indicate a slow cooling rate(11.9°C/Ma)in the Late Jurassic,and rapid uplift and cooling(35.8-29.2°C/Ma)in the Early *** dramatically increased uplift and cooling period in the Early Cretaceous are contemporaneous with large-scale gold mineralization in the Jiaodong *** implies that thermal upwelling of asthenosphere and related tectonic extension played an important role in gold remobilization and precipitation.

关键词： magmatism geochronology zircon apatite gold deposits Jiaodong Peninsula

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胶东中生代岩浆岩金等元素组成及其对金成矿的启示

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黄金科学技术 2024年第5期32卷 768-780页

作者：董磊磊白鑫宋明春北京科技大学土木与资源工程学院北京100083 河北地质大学地球科学学院河北石家庄050031

胶东地区是我国最大的金成矿区,但是关于其巨量金的来源一直不明。通过对成矿前的晚侏罗世玲珑期岩体(玲珑、昆嵛山)、早白垩世早期郭家岭期岩体及其暗色包体(郭家岭、丛家)以及成矿后的早白垩世晚期伟德山型岩体及其暗色包体(崂山、牙... 详细信息

胶东地区是我国最大的金成矿区,但是关于其巨量金的来源一直不明。通过对成矿前的晚侏罗世玲珑期岩体(玲珑、昆嵛山)、早白垩世早期郭家岭期岩体及其暗色包体(郭家岭、丛家)以及成矿后的早白垩世晚期伟德山型岩体及其暗色包体(崂山、牙山、艾山等)的Au、Cu和Ag等元素含量进行分析,发现这些亲铜元素相对于大陆地壳较为亏损。此外,玲珑期和伟德山期样品中Cu/Ag比值与Cu含量具有明显的正相关性。而郭家岭期岩体及其包体中以及伟德山期岩体中的暗色包体中,Cu/Ag比值与Au含量具有正相关性,表明在岩浆演化过程中,单硫化物固溶体从岩浆中持续分离,造成中生代岩浆岩具有较低的Cu/Ag比值和金属含量。这些硫化物的堆晶在中下地壳形成了富集Au等元素的矿源层,为胶东金成矿提供了物质基础。研究还表明,单硫化物固溶体分离是岩浆演化过程中普遍发育的现象,这种现象也可能是导致大陆地壳相对于地幔亏损Cu等元素的原因。

关键词：胶东金成矿硫化物堆晶玲珑岩体郭家岭岩体伟德山岩体

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Prolonged Mantle Modification beneath the North China Craton:Evidence from Contrasting Mafic Dykes in Jiaodong Peninsula

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Journal of Earth Science 2023年第4期34卷 1150-1164页

作者： Leilei Dong Zhiming Yang mingchun song School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory of Deep-Earth Dynamics Institute of GeologyChinese Academy of Geological SciencesBeijing 100037China College of Earth Sciences Hebei GEO UniversityShijiazhuang 050031China Shandong Provincial No.6 Exploration Institute of Geology and Mineral Resources Weihai 264209China

The nature of lithosphere mantle beneath North China Craton(NCC) has been changed during the *** investigated the mafic dykes in Jiaodong to put constraint on the origin of them and reveal the mantle evolution of the *** from Kunyushan and Nansu mafic dykes give concordia U-Pb ages of 114.9 and 52.8 Ma,*** Kunyushan mafic dyke has high MgO(~8.0 wt.%) and Cr(>380 ppm) but lower FeO(11 wt.%) *** LILE and light rare earth elements(LREE) are not so strongly enriched relative to the mafic dyke from Kunyushan but display slight enrichment compared to the primitive *** zircon εHf(t) values are obtained(from +11.7 to +19.5,with one outlier of +3.4).It is suggested that the Nansu dyke sourced from an enriched MORB mantle and was generated by fluid flux melting.

关键词： mafic dyke Jiaodong North China Craton lithospheric mantle zircon.

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LA-ICPMS Zircon U-Pb Age of the Zhongchaye Vermiculite Deposit in Laiwu,Shandong Province

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Acta Geologica Sinica(English Edition) 2020年第5期94卷 1721-1723页

作者： LI Jie LI Shiyong SU Xuliang song mingchun Hebei Key Laboratory of Strategic Critical Mineral Resources Hebei GEO UniversityShijiazhuang 050031China School of Earth Sciences Hebei GEO UniversityShijiazhuang 050031China Center of Deep Sea Research Institute of OceanologyChinese Academy of SciencesQingdaoShandong 266071China The Geophysics and Geochemistry Research Institute in Shandong Province Jinan 250013China Qingdao Geo-engineering Investigation Institute QingdaoShandong 266000China Shandong Provincial No.6 Exploration Institute of Geology and Mineral Resources WeihaiShandong 264209China

Objective The Zhongchaye vermiculite deposit is located north of ***,it belongs to the Luxi Block,west of the Tan-Lu fault zone(Fig.1a).The crystalline basement of this area consists of the Neoarchean Taishan Group an... 详细信息

关键词： strata belongs carbonate

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Geophysical-Geological Interpretation and Deep-Seated Gold Deposit Prospecting in Sanshandong-Jiaojia Area, Eastern Shandong Province, China

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Acta Geologica Sinica(English Edition) 2012年第3期86卷 640-652页

作者： song mingchun WAN Guopu CAO Chunguo HE Chunyan Shandong Provincial Bureau of Geology and Mineral Resources Jinan 250013China Shandong Institute of Geophysical and Geochemical Exploration Jinan 250013China

Integrated gravitational, electrical-magnetic surveys and data processing carried out in the Sanshandao-Jiaojia area, Eastern Shandong Province, northeast China, aim to illuminate the geological characteristics of this shallow-covered area and delineate deep-seated gold prospecting targets. In this region, altogether 12 faults exert critical control on distribution of three types of Early Precambrian metamorphic rock series, i.e. those in the metamorphic rock area, in the granitic rock area underlying the metamorphic rock, and in the remnant metamorphic rock area in granites, respectively. Additionally, the faults have major effects on distribution of four Mesozoic Linglong rock bodies of granite, i.e. the Cangshang, Liangguo, Zhuqiao-Miaojia and Jincheng granites. The Sanshandao and Jiaojia Faults are two well-known regional ore-controlling faults; they have opposite dip direction, and intersect at a depth of 4500 m. Fracture alteration zones have striking geophysical differences relative to the surrounding county rocks. The two faults extend down along dip direction in a gentle wave form, and appear at some steps with different dips. These steps comprise favorable gold prospecting areas, consistent with a step metallogenic model. Six deep-seated gold-prospecting targets are delineated, i.e. Jincheng-Qianchenjia, Xiaoxizhuang-Zhaoxian, Xiyou-Wujiazhuangzi, Xiangyangling-Xinlicun, Panjiawuzi and Miaojia-Pinglidian.

关键词： geophysical interpretation deep-seated gold deposit prospecting and prediction tectonic control Shandong Province

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CO2-Li-Sr Rich Therapeutic Groundwater in Gounan Village, Yantai, Shandong Province

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Acta Geologica Sinica(English Edition) 2018年第1期92卷 422-423页

作者： song Yingxin LU Baoping song mingchun YANG Dongming YAO Chunmei Shandong Institute of Geological Sciences Jinan 250013 Shandong China Shandong Province Geological Environment Monitoring Station Jinan 250014 Shandong China Shandong Provincial Bureau of Geology & Mineral Resources Shandong Provincial Engineering Research Center Jinan 250013 Shandong China

Objective The Jiaodong area in Shandong Province of eastern China hosts abundant high-quality groundwater. Most of the mineral water sources in this area, including those in the Laoshan and Kunyu Mountains, occur in Mesozoic granites. The groundwater and mineral waters contain metasilicic acid and strontium but the latter is potable. Mineral water is also found in the Jiaolai Basin, hosting in the basalts of the Wangshi group in Anjiagou Village, Jiaozhou City. The rapeutic groundwater, however, is rarely found in this area, except for the recent discovery of CO：-Li-Sr rich therapeutic and potable groundwater, which is reported in this study.

关键词： CO2-Li-Sr Rich Therapeutic Groundwater

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Metallogenic Epoch of Nonferrous Metallic and Silver Deposits in the Jiaodong Peninsula, China and its Geological Significance

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Acta Geologica Sinica(English Edition) 2017年第4期91卷 1305-1325页

作者： song mingchun WANG Shanshan YANG Lixin LI Jie LI Shiyong DING Zhengjiang Shandong Provincial Bureau of Geology & Mineral Resources Jinan 250013 Shandong China Shandong Provincial Engineering Research Center for Geological Prospecting Jinan 250013 Shandong China The Sixth Geology & Mineral Resources Survey Institute of Shandong Province Weihai 264209 Shandong China Department of Resource Hebei University of Geosciences Shijiazhuang 050000 Hebei China Geophysical & Geochemical Exploration Institute of Shandong Province Jinan 250013 Shandong China The-Third Geology & Mineral Resources Survey Institute of Shandong Province Yantai 264003 Shandong China

As China＇s most important gold-producing district, the Jiaodong Peninsula also contains copper, lead-zinc, molybdenum （tungsten）, and other nonferrous metal ore deposits, but the space-time and genetic relationships with gold deposits remain uncertain. To investigate the temporal relationship between these nonferrous metal and gold ore deposits, We collected the samples from a number of nonferrous metallic and silver deposits and metallogenetic rock bodies in the eastern Jiaodong Peninsula for isotopic dating. The results show that the Re-Os isotopic model ages of the Lengjia molybdenum deposit in Rongcheng range from 114.5 ± 1.8 Ma to 112.6 ± 1.5 Ma, with an average age of 113.6 ± 1.6 Ma; the LA-ICP-MS ^206pb/^238U ages of 33 zircons in the sericitization porphyritic monzogranite that hosts the Tongjiazhuang silver deposit in Rongcheng range between 122 Ma and 109 Ma, with a weighted mean age of 116.04 ± 0.95 Ma; the LA-ICP-MS ^206pb/^238U ages of 31 zircons in the copper metallogenic pyroxene monzodiorite that hosts the Kuangbei copper deposit in Rongcheng range from 126 Ma to 106 Ma, with a weighted mean age of 116.6 ± 1.7 Ma; and the LA-ICP-MS ^206pb/^238U ages of 19 zircons in the pyroxene monzodiorite surrounding the Dadengge gold and multimetal deposit in Weihai range from 113 Ma to 110 Ma, with a weighted mean age of 111.7 ± 0.6 Ma. All these results indicate that the metallogenic ages of the silver and nonferrous metallic deposits in the Jiaodong Peninsula are in a limited range from 118 Ma to 111 Ma. Previous studies have demonstrated that the isotopic ages of gold deposits in the Jiaodong Peninsula range from 123 Ma to 110 Ma, while Weideshanian magmatism occurred between 126 Ma to 108 Ma. Both these ranges are grossly consistent with the metallogenic ages of silver and nonferrous metallic deposits in this study, suggesting that the large-scale mineralization occurred in the Early Cretaceous when magmatic activities were strong. This epoch may be linked t

关键词： metallogenic epoch nonferrous metal mineral silver deposit thermal uplifting- extensional structure mineralization scenario Jiaodong type gold deposit

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Exhumation history and preservation of the Jiaojia giant gold deposit, Jiaodong Peninsula

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Science China Earth Sciences 2022年第6期65卷 1161-1177页

作者： Qibin ZHANG mingchun song Zhengjiang DING Meili GUO Mingling ZHOU Changguo DAI Guang HUO Peng ZHANG CAS Key Laboratory of Mineralogy and Metallogeny/Guangdong Provincial Key Laboratory of Mineral Physics and Materials Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China University of Chinese Academy of Sciences Beijing 100049China Shandong Provincial No.6 Exploration Institute of Geology and Mineral Resources Weihai 264209China

The Jiaojia giant gold deposit is the largest gold deposit in China, with a total gold reserve of approximately 1200 *** now, the knowledge of the exhumation history of post-mineralization period is limited, in particular for the low-temperature thermochronology studies of samples below-1000 m. In this work, we combined zircon fission-track(ZFT) and apatite fission-track(AFT) dating of samples between-1100 and-2000 m to determine the post-mineralization cooling and exhumation history of the Jiaojia giant gold deposit. The ZFT ages ranged from 144.2±6.3 to 124.4±5.5 Ma, representing the cooling period and the disturbance of ore-forming fluid. The AFT ages ranged from 28.1±2.6 to 16.2±1.0 Ma, recording the exhumation and cooling processes. With reference to previous low-temperature thermochronology studies in the Jiaojia goldfield, we estimated the exhumation rate and amount of the Jiaojia giant gold deposit and reconstructed its exhumation and preservation history. The exhumation history was divided into four stages, rapid exhumation(~120–95 Ma), relatively slow exhumation(~95–50 Ma),slow exhumation(~50–30 Ma) and relatively rapid exhumation(since 30 Ma). Each stage corresponds to geological events related to the basin-mountain coupling that have occurred since the Cretaceous in the Jiaodong area, namely, a strong tectonic extension and volcanic eruption in the Jiaolai Basin, subsidence of the Jiaolai Basin and Wangshi Group molasse sedimentary,tectonic quiescence, and the Linqu Group basalt eruption of the Jiaobei uplift. Our results show that the exhumation of the Jiaojia giant gold deposit is ~5.2±1.2 km and the orebody erosion degree is relatively low, indicating huge prospecting potential deep in the Jiaojia giant gold deposit. These findings have significance and practical value for deep prospecting in the Jiaodong area.

关键词： Fission-track Exhumation history Deposit preservation Jiaojia giant gold deposit Jiaodong

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The Kiloton Class Jiaojia Gold Deposit in Eastern Shandong Province and Its Genesis

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Acta Geologica Sinica(English Edition) 2014年第3期88卷 801-824页

作者： song mingchun DENG Jun YI Pihou YANG Liqiang CUI Shuxue XU Junxiang ZHOU Mingling HUANG Tailing song Guozheng song Yingxin Shandong Provincial Bureau of Geology & Mineral Resources Shandong Provincial Engineering Research Center for geological prospecting China University of Geosciences 6th Geology & Mineral Resources Survey Institute of Shandong Province Shandong Provincial Geological Sciences Institute

The recent deep prospecting results in the Jiaojia area of Eastern Shandong Province indicate that the Jiaojia ore field composed of several individual gold deposits as previously suggested is actually an ultra-large gold *** deposit covers an area of ～40 km2,and shows a structural control by the Jiaojia fault and its secondary *** orebodies generally occur along the same mineralization-alteration belt,and the main orebodies intersect with each other or exhibit a parallel or overlapping *** deposit＇s reserves are estimated to be 1,200t of gold,being the first gold deposit of more than 1000t gold reserves in *** No.Ⅰ-1 orebody in the Shaling-deep Sizhuang ore blocks holds gold reserves greater than 350 t,or 29 percent of the total reserves,followed by the No.Ⅰ orebody in Matang-Jiaojia ore blocks with exceeding 150t gold *** deposit mainly occurs in the footwall of the Jiaojia fault,and presents zoned patterns in mineralization,alteration and *** strongly mineralized zones agree with strongly altered and tectonically fractured *** orebodies display strataform-like,veinlike or lenticular shapes,and generally show characteristics of pinching out and reappearing,branching and converging,expanding and *** orebodies commonly occur along positions where the fault strike changes and in gentle locations with dips changing from steep to *** main orebodies are parallel to the main plane of the orecontrolling fault,and tend to be gentle from the surface to the *** orebodies mainly plunge to the southwest,with plunge angle of 45°-606° Orebodies near the main plane of the ore-controlling fault have more gold resource than those away from main fault *** slant depth of orebodies is generally larger than the length along its strike direction; orebodies become thick and gold grades become low from the shallow area to the deep ***-forming fluids are H2O-CO2-NaCl±CH4 type with medium-tempe

关键词： Kiloton class Jiaojia gold deposit deep prospecting Jiaojia fault ore-hosting regularity,genesis Eastern Shandong Province

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A step metallogenetic model for gold deposits in the northwestern Shandong Peninsula, China

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Science China Earth Sciences 2012年第6期55卷 940-948页

作者： song mingchun YI PiHou XU JunXiang CUI ShuXue SHEN Kun JIANG HongLi YUAN WenHua WANG HuaJiang Shandong Provincial Bureau of Geology and Mineral Resources Jinan 250013 China No. 6 Exploration Institute of Geology and Mineral Resources Zhaoyuan 265400 China Shandong Institute ＆ Laboratory of Geological Sciences Jinan 250013 China

Based on our study of the nature and variation of mineralization-controlling faults in their deep extension and the spatial distribution of gold orebodies in the northwestern Shandong Peninsula (NSP), here we propose that the gold deposits in the Jiaojia gold belt are controlled by listric faults and the gold deposits in the NSP are controlled by extensional fault system. We also suggest that there is a multiple mineralization space in the deep part of the NSP gold belt. As steps or benches occur along the deep extention of the listric fault where its dipping angle changes from steep to gentle, a number of gold deposits are correspondingly distributed as a steplike pattern, which is named as a step metallogenetic model for gold deposits in the NSP. The gold deposits in Shandong Peninsula were formed in the Cretaceous when the crust in the region experienced extention and thinning following the strong collision between North China Plate and Yangtze Plate during the Triassic. Crust anataxis, fluid remobilization, and extention-detachement of the crust are the leading factors for the gold mineralization.

关键词： deep-seated gold deposit step metallogenetic model northwestern Shandong Peninsula Jiaojia gold belt

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