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学者姓名：朱律运
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Abstract ：
Landslide susceptibility evaluation plays an important role in disaster prevention and reduction. Feature-based transfer learning (TL) is an effective method for solving landslide susceptibility mapping (LSM) in target regions with no available samples. However, as the study area expands, the distribution of landslide types and triggering mechanisms becomes more diverse, leading to performance degradation in models relying on landslide evaluation knowledge from a single source domain due to domain feature shift. To address this, this study proposes a Multi-source Domain Adaptation Convolutional Neural Network (MDACNN), which combines the landslide prediction knowledge learned from two source domains to perform cross-regional LSM in complex large-scale areas. The method is validated through case studies in three regions located in southeastern coastal China and compared with single-source domain TL models (TCA-based models). The results demonstrate that MDACNN effectively integrates transfer knowledge from multiple source domains to learn diverse landslide-triggering mechanisms, thereby significantly reducing prediction bias inherent to single-source domain TL models, achieving an average improvement of 16.58% across all metrics. Moreover, the landslide susceptibility maps generated by MDACNN accurately quantify the spatial distribution of landslide risks in the target area, providing a powerful scientific and technological tool for landslide disaster management and prevention. (c) 2025 China University of Geosciences (Beijing) and Peking University. Published by Elsevier B.V. on behalf of China University of Geosciences (Beijing). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
Keyword ：
Data scarcity Data scarcity Deep learning Deep learning Feature domain adaptation Feature domain adaptation Landslide susceptibility Landslide susceptibility MDACNN MDACNN
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| GB/T 7714 | Su, Yan , Fu, Jiayuan , Lai, Xiaohe et al. Complex cross-regional landslide susceptibility mapping by multi-source domain transfer learning [J]. | GEOSCIENCE FRONTIERS , 2025 , 16 (4) . |
| MLA | Su, Yan et al. "Complex cross-regional landslide susceptibility mapping by multi-source domain transfer learning" . | GEOSCIENCE FRONTIERS 16 . 4 (2025) . |
| APA | Su, Yan , Fu, Jiayuan , Lai, Xiaohe , Lin, Chuan , Zhu, Lvyun , Xie, Xiudong et al. Complex cross-regional landslide susceptibility mapping by multi-source domain transfer learning . | GEOSCIENCE FRONTIERS , 2025 , 16 (4) . |
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叶蜡石已成为生产各类新型功能材料的关键原料之一,我国热液成因叶蜡石矿的资源量占比高,因此完善该类叶蜡石矿矿床成因模式的认识有利于相关勘查工作的开展,进而为相关新型材料制造业的稳定发展提供可靠的原料保障.对福州加良山叶蜡石矿进行系统的剖面调查工作,并利用综合矿物分析仪(TIMA)、电子探针X射线显微分析仪(EPMA)和激光剥蚀电感耦合等离子体质谱仪(LA-ICP-MS),对采集样品的蚀变矿物组成及元素含量进行系统的定量分析.基于相关蚀变矿物的生成关系,对福州加良山叶蜡石矿存在的蚀变分带情况进行了分析,明确了不同类型矿石和围岩中存在的蚀变矿物组合、成因和所需条件.并依据蚀变形成的叶蜡石、硬水铝石、绢云母和高岭石矿物中的元素含量特征,探讨了蚀变过程中的部分元素的地球化学迁移行为.系统野外调查和定量测试结果表明:加良山矿区的蚀变组合在空间分布上具一定的分带性,从火山中心向外叶蜡石化逐渐减弱,且矿物组合存在由高温蚀变向低温蚀变转变的趋势.而加良山叶蜡石矿的形成与火山及热液演替活动有关,长期反复的热液活动改造了区域内的高铝火山岩,并让围岩中的矿物发生蚀变、元素发生迁移,最终形成了大规模的工业叶蜡石矿.而矿体中可用于工艺品加工的叶蜡石形成所需条件更加严格,需要蚀变热液的SiO2未饱和,温度保持在合适范围(约273～370 ℃),且存在断裂为其提供生长空间.
Keyword ：
叶蜡石矿 叶蜡石矿 地球化学特征 地球化学特征 成矿模式 成矿模式 矿床学 矿床学 矿物组成 矿物组成 蚀变分带 蚀变分带
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| GB/T 7714 | 朱律运 , 詹旭焘 , 许文 et al. 福州加良山叶蜡石矿的蚀变矿物分带及其元素地球化学特征对矿床成因的启示 [J]. | 地球科学 , 2025 , 50 (4) : 1319-1334 . |
| MLA | 朱律运 et al. "福州加良山叶蜡石矿的蚀变矿物分带及其元素地球化学特征对矿床成因的启示" . | 地球科学 50 . 4 (2025) : 1319-1334 . |
| APA | 朱律运 , 詹旭焘 , 许文 , 孟桅 , 李玉娟 , 陈润生 . 福州加良山叶蜡石矿的蚀变矿物分带及其元素地球化学特征对矿床成因的启示 . | 地球科学 , 2025 , 50 (4) , 1319-1334 . |
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Currently, pyrophyllite is one of the most important raw materials for a variety of new functional products. In China, hydrothermal pyrophyllite constitutes a significant proportion. Therefore, enhancing the genesis model of hydrothermal pyrophyllite deposit is essential for ensuring a long-term stable supply of industrial raw materials for the manufacturing industry focused on new functional materials. This study involved a systematic profile survey and sampling at the Jialiangshan pyrophyllite deposit. The TESCAN integrated mineral analyzer (TIMA), electron probe micro-analysis (EPMA) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) were utilized to quantitatively determine the mineral composition and elemental characteristics of alteration minerals. Mineral assemblages in different ores were analyzed to determine their genesis conditions based on the result of alteration zoning results. The elemental composition of clay minerals including pyrophyllite, diaspore, sericite and kaolinite were specifically determined to understand the elemental behavior during the alteration process. Results from field investigation and quantitative analysis indicate that the alteration assemblage within the Jialiangshan pyrophyllite deposit exhibits spatial distribution, characterized by a gradual decrease in alteration temperature from the crater outwards. Our study suggests that the formation of Jaliangshan pyrophyllite deposit is linked to volcanic activity followed by an extended sequence of hydrothermal alteration processes. Following extensive alteration, element migration between surrounding rock and the hydrothermal fluid resulted in large-scale pyrophyllite deposits for industrial raw materials. The conditions necessary for the forming artefact pyrophyllite within the ore-body are more stringent; the hydrothermal fluid should be unsaturated with SiO2 at temperatures maintained between 273 and 370 °C along with fractures providing space for growth. © 2025 China University of Geosciences. All rights reserved.
Keyword ：
Ablation Ablation Clay alteration Clay alteration Electron probe microanalysis Electron probe microanalysis Lead deposits Lead deposits Scale (deposits) Scale (deposits)
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| GB/T 7714 | Zhu, Lüyun , Zhan, Xutao , Xu, Wen et al. Alteration Zoning and Geochemical Characterization of Elements in Minerals of Jialiangshan Pyrophyllite Deposit, Fuzhou, Southeast China: Implications for Deposit Genesis [J]. | Earth Science - Journal of China University of Geosciences , 2025 , 50 (4) : 1319-1334 . |
| MLA | Zhu, Lüyun et al. "Alteration Zoning and Geochemical Characterization of Elements in Minerals of Jialiangshan Pyrophyllite Deposit, Fuzhou, Southeast China: Implications for Deposit Genesis" . | Earth Science - Journal of China University of Geosciences 50 . 4 (2025) : 1319-1334 . |
| APA | Zhu, Lüyun , Zhan, Xutao , Xu, Wen , Meng, Wei , Li, Yujuan , Chen, Runsheng . Alteration Zoning and Geochemical Characterization of Elements in Minerals of Jialiangshan Pyrophyllite Deposit, Fuzhou, Southeast China: Implications for Deposit Genesis . | Earth Science - Journal of China University of Geosciences , 2025 , 50 (4) , 1319-1334 . |
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Iron oxide minerals, such as hematite and magnetite, are commonly found in a wide range of geological environments. Their Fe isotopic composition acts as a potent geochemical tracer, finding applications across various realms of Earth sciences. However, natural iron oxide minerals often have a high Cr content up to percentile levels, necessitating correction of isobaric interference caused by 54Cr+ on 54Fe+ to ensure accurate and precise in situ Fe isotopic compositions. In this study, a pure chromium metal with homogeneous isotopic compositions was examined within the analysis sequence to obtain the fractionation factor of Cr (beta Cr) for isobaric interference correction. A femtosecond laser ablation system combined with wet plasma conditions was used to decrease the matrix effect. We synthesized a series of magnetite and hematite samples with simple matrix as well as natural magnetite samples with complex matrix to evaluate the feasibility of Cr interference correction. By employing our proposed correction method, the deviation caused by the isobaric interference of 54Cr+ was effectively eliminated. The corrected delta 56Fe values for hematite and magnetite samples, even with a Cr/Fe ratio of as high as 1.27, exhibited good agreement with the reference values within the long-term reproducibility uncertainty of 0.10 parts per thousand. These results indicate the robustness of Cr interference correction in obtaining accurate Fe isotopic compositions of Cr-rich iron oxides.
Keyword ：
Cr-rich iron oxides Cr-rich iron oxides Fe isotope Fe isotope Interference correction Interference correction LA-MC-ICP-MS LA-MC-ICP-MS
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| GB/T 7714 | Lu, Xinting , He, Detao , Liu, Yongsheng et al. In situ Fe isotope analysis of Cr-rich iron oxides using pure chromium metal for isobaric interference corrections by femtosecond LA-MC-ICP-MS [J]. | CHEMICAL GEOLOGY , 2024 , 648 . |
| MLA | Lu, Xinting et al. "In situ Fe isotope analysis of Cr-rich iron oxides using pure chromium metal for isobaric interference corrections by femtosecond LA-MC-ICP-MS" . | CHEMICAL GEOLOGY 648 (2024) . |
| APA | Lu, Xinting , He, Detao , Liu, Yongsheng , Li, Ming , Lin, Jie , Chen, Wei et al. In situ Fe isotope analysis of Cr-rich iron oxides using pure chromium metal for isobaric interference corrections by femtosecond LA-MC-ICP-MS . | CHEMICAL GEOLOGY , 2024 , 648 . |
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Gold deposits are often the result of complex mineralization and remobilization processes. Interpretation of bulk geochemical and sulfur isotope data of the gold deposits is frequently hampered by complex zoning in pyrite, which calls for in situ determination of geochemical and sulfur isotope composition of sulfide minerals. The Qiucun deposit is a good representative of epithermal gold deposits in the Mesozoic Coastal Volcanic Belt of southeastern China. It represents a complex mineralization history, comprising three hydrothermal stages: (I) early stage of pyrite-quartz-chalcedony; (II) main ore stage of quartz-polymetallic sulfide; and (III) post-ore stage of quartz-carbonate. Detailed backscattered electron imaging (BSE) and in situ trace element and sulfur isotope analyses using laser ablation-inductively coupled plasma-mass spectrometry (LA-ICP-MS) and LA-multicollector (MC)-ICP-MS were applied to reveal the gold mineralization and remobilization history of this deposit. Four texturally distinct generations of pyrite were identified, all of which host invisible gold: Py-1a and Py-1b in Stage I and Py-2a and Py-2b in Stage II. A detailed study of the texture, chemistry, and sulfur isotopic composition as well as hydrothermal evolution of auriferous pyrite from the Qiucun deposit revealed the behavior of gold in the course of pyrite evolution. Pyrite of Stages I and II contains invisible gold, whereas later-stage visible native gold and re-enrichment in invisible gold is associated with alteration rims around the primary pyrite grains. Py-1a is rich in silicate inclusions, enriched in Co and Ni, and depleted in As and Au relative to later pyrite generations. This redistribution is attributed to the alteration of biotite in the sub-volcanic host rocks that effectively destabilized gold in the ore fluid during Py-1a deposition. Py-1b and Py-2a show oscillatory zoning with bright bands having elevated As and Au contents. The oscillatory zoning is interpreted to reflect pressure fluctuations and repeated local fluid boiling around the pyrite crystals. These three pyrite generations (Py-1a, Py-1b, Py-2a) record a narrow range of delta S-34(V-CDT) values between -3.6 and 4.6 parts per thousand, consistent with a magmatic sulfur source. Gold and some trace elements (As, Ag, Sb, Pb, Tl, and Cu) that were initially incorporated into Py-2a became partially exsolved and remobilized during the replacement of porous and invisible gold-rich Py-2b. This replacement was likely due to coupled dissolution and re-precipitation reactions triggered by oxidation of the mineralizing fluids. Fluid oxidation is further supported by a general decrease trend of delta S-34(V-CDT) from Py-2a (-3.2 to 4.6 parts per thousand) to Py-2b (-15.2 to -2.3 parts per thousand). Last, previously formed auriferous pyrite underwent post-mineralization fracturing, causing local pulverization of pyrite. Thus, newly created porosity facilitated fluid circulation, hydrothermal alteration of the pyrite, and remobilization of invisible gold, which re-precipitated with pyrite in the form of electrum as small inclusions or as larger grains within fractures. Our study emphasizes that pressure-driven hydrothermal processes play a vital role in the initial enrichment and re-concentration of gold and some other trace metals during episodic deposition, replacement, and hydrothermal alteration of gold-bearing pyrite in epithermal gold deposits, ultimately forming visible gold and high-grade ore shoots as exemplified by the Qiucun deposit.
Keyword ：
epithermal gold mineralization epithermal gold mineralization gold remobilization gold remobilization Pyrite formation and replacement Pyrite formation and replacement sulfur isotopes sulfur isotopes
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| GB/T 7714 | Ma, Ying , Jiang, Shao-Yong , Frimmel, Hartwig E. et al. In situ chemical and isotopic analyses and element mapping of multiple-generation pyrite: Evidence of episodic gold mobilization and deposition for the Qiucun epithermal gold deposit in Southeast China [J]. | AMERICAN MINERALOGIST , 2022 , 107 (6) : 1133-1148 . |
| MLA | Ma, Ying et al. "In situ chemical and isotopic analyses and element mapping of multiple-generation pyrite: Evidence of episodic gold mobilization and deposition for the Qiucun epithermal gold deposit in Southeast China" . | AMERICAN MINERALOGIST 107 . 6 (2022) : 1133-1148 . |
| APA | Ma, Ying , Jiang, Shao-Yong , Frimmel, Hartwig E. , Zhu, Lu-Yun . In situ chemical and isotopic analyses and element mapping of multiple-generation pyrite: Evidence of episodic gold mobilization and deposition for the Qiucun epithermal gold deposit in Southeast China . | AMERICAN MINERALOGIST , 2022 , 107 (6) , 1133-1148 . |
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The properties of subcontinental lithospheric mantle beneath the eastern North China Craton changed significantly in the Mesozoic-Cenozoic, but details are sketchy. In this study, we report major element and oxygen isotopic compositions of olivine phenocrysts from early Cretaceous Xiaoling basalts and olivine xenocrysts from Quaternary Kuandian basalts. The olivine phenocrysts from the Xiaoling basalts show relatively low Fo values (79~88), Mn/Fe (1.3~1.6) and Ca/Fe ratios (0.2~1.5), but relatively high CaO (greater than 0.1%) and Ni/Mg values (0.4~1.2), indicating that the Xiaoling basalts were derived from a hybrid source of peridotite and pyroxenite within the lithoshperic mantle. Their δ18O (4.77‰~ 5.96‰, mean 5.4‰) values significantly higher than those of the normal mantle value, further demonstrate the influence of cryogenic hydrothermal alteration oceanic crust melt/fluid components in the mantle source. The olivine xenocrysts from the Kuandian basalts have Fo values ranging from 88 to 92, together with high NiO (0.3%~0.4%) and low CaO ( © 2022 Geological Society of China. All rights reserved.
Keyword ：
Basalt Basalt Clay alteration Clay alteration Isotopes Isotopes Manganese oxide Manganese oxide Nickel oxide Nickel oxide Olivine Olivine Oxygen Oxygen Recycling Recycling
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| GB/T 7714 | Zhang, Chao , Ma, Qiang , Zheng, Jianping et al. Oxygen isotopic composition of olivine phenocryst and xenocryst from Mesozoic-Cenozoic basalts in Liaodong Peninsula and its implications for lithospheric mantle evolution [J]. | Acta Geologica Sinica , 2022 , 96 (12) : 4211-4223 . |
| MLA | Zhang, Chao et al. "Oxygen isotopic composition of olivine phenocryst and xenocryst from Mesozoic-Cenozoic basalts in Liaodong Peninsula and its implications for lithospheric mantle evolution" . | Acta Geologica Sinica 96 . 12 (2022) : 4211-4223 . |
| APA | Zhang, Chao , Ma, Qiang , Zheng, Jianping , Hong, Lubing , Pang, Chongjing , Wang, Cuicui et al. Oxygen isotopic composition of olivine phenocryst and xenocryst from Mesozoic-Cenozoic basalts in Liaodong Peninsula and its implications for lithospheric mantle evolution . | Acta Geologica Sinica , 2022 , 96 (12) , 4211-4223 . |
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华北克拉通东部岩石圈地幔性质在中—新生代时期发生了重大转变,但细节还不清楚.本文对辽东半岛早白垩世(克拉通破坏峰期)小岭组玄武岩和第四纪(克拉通破坏后)宽甸玄武岩中橄榄石斑晶/捕虏晶进行了主量元素和氧同位素组成研究.早白垩世小岭组玄武岩斑晶橄榄石Fo为79～88,CaO>0.1％,具有高Ni/Mg(0.4～1.2)、低Mn/Fe(1.3～1.6)和低Ca/Fe比值(0.2～1.5)的特征,指示岩浆源区是辉石岩和橄榄岩混合的岩石圈地幔;高于正常地幔橄榄石的δ18O(4.77‰～5.96‰,平均值5.4‰)显示低温热液蚀变洋壳熔体/流体组分对地幔源区的影响.第四纪宽甸玄武岩捕虏晶橄榄石Fo值为88～92(平均值90),具有高NiO(0.3％～0.4％)和低CaO(<0.1％)、MnO(0.1％～0.2％)含量,显示主体饱满、与少量过渡型和难熔型并存的地幔组成特征;其δ18O(4.58‰～5.38‰,平均值5.3‰)与正常地幔值接近.结合华北其他地区地幔橄榄石氧同位素数据,发现早白垩世破坏峰期有较多俯冲洋壳来源的熔/流体交代岩石圈地幔,而新生代岩石圈地幔则为破坏后的残余和新增生产物,我们认为古太平洋板块俯冲和后撤—撕裂引起的熔体/流体交代作用对华北克拉通岩石圈地幔的弱化、侵蚀和最终置换起了重要作用.
Keyword ：
再循环蚀变洋壳 再循环蚀变洋壳 华北克拉通破坏 华北克拉通破坏 岩石圈地幔 岩石圈地幔 早白垩世—新生代 早白垩世—新生代 橄榄石 橄榄石 氧同位素 氧同位素
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| GB/T 7714 | 张超 , 马强 , 郑建平 et al. 辽东中—新生代玄武岩的橄榄石斑晶和捕虏晶氧同位素组成及其岩石圈地幔演化启示 [J]. | 地质学报 , 2022 , 96 (12) : 4211-4223 . |
| MLA | 张超 et al. "辽东中—新生代玄武岩的橄榄石斑晶和捕虏晶氧同位素组成及其岩石圈地幔演化启示" . | 地质学报 96 . 12 (2022) : 4211-4223 . |
| APA | 张超 , 马强 , 郑建平 , 洪路兵 , 庞崇进 , 王翠翠 et al. 辽东中—新生代玄武岩的橄榄石斑晶和捕虏晶氧同位素组成及其岩石圈地幔演化启示 . | 地质学报 , 2022 , 96 (12) , 4211-4223 . |
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As one of the most famous craft-carving stones in China, Shoushan stone commonly consists of clay minerals, including the kaolinite, pyrophyllite, or illite group, which is the product of hydrothermal alteration. In Fujian Province, the Xiaoxi Formation of the Early Cretaceous is a critical formation containing pyrophyllite deposits (including Shoushan stone). Here, we carry out a geological field investigation of a typical section in the Shoushan basin of southeastern China to identify lithology and volcanic sequences of the Xiaoxi Formation. The section included four lithofacies: eruption facies, flood lava facies, sedimentary facies, and volcanic channel facies. The petrogenesis of these lithofacies demonstrates the evolution of volcanism, which is critical for understanding the formation of the Shoushan-stone-associated hydrothermal system. For the geochronological study, the samples of unaltered rhyolitic tuff are collected from the layers topping and bottoming a pyrophyllite orebody. The zircon U-Pb dating results constrain the age of pyrophyllite alteration during the episodic eruption. Shoushan stone is formed in an epithermal hydrothermal environment, so we suggest that high-quality Shoushan stone is formed by the hydrothermal alterations in the interval time of the volcanic episode (135-131 Ma) and after volcanic activity (<131 Ma). Furthermore, the Shoushan basin's stratigraphic section suggests that there have been large-scale hydrothermal systems in the volcanic basin during the Early Cretaceous volcanism. The stratigraphic correlation and geochemical results indicate that the Mesozoic basins in the Fu'an-Yongtai volcanic eruption belt have the potential for pyrophyllite deposit exploration.
Keyword ：
mineralization age mineralization age Shoushan stone Shoushan stone stratigraphic correlation stratigraphic correlation stratigraphic section stratigraphic section volcanic lithofacies volcanic lithofacies zircon U-Pb dating zircon U-Pb dating
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| GB/T 7714 | Li, Yu-Juan , Zhu, Lu-Yun , Xu, Wen et al. Stratigraphic Section and Geochronological Studies of the Shoushan Basin, Fujian Province, South China, and Its Implications for the Mineralization of Shoushan Stone [J]. | MINERALS , 2022 , 12 (12) . |
| MLA | Li, Yu-Juan et al. "Stratigraphic Section and Geochronological Studies of the Shoushan Basin, Fujian Province, South China, and Its Implications for the Mineralization of Shoushan Stone" . | MINERALS 12 . 12 (2022) . |
| APA | Li, Yu-Juan , Zhu, Lu-Yun , Xu, Wen , Meng, Wei , Lin, Min , Yang, Zhong et al. Stratigraphic Section and Geochronological Studies of the Shoushan Basin, Fujian Province, South China, and Its Implications for the Mineralization of Shoushan Stone . | MINERALS , 2022 , 12 (12) . |
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In situ Mg isotope analysis of geological materials by laser ablation multiple collector-inductively coupled plasma mass spectrometry (LA-MC-ICP-MS) is a powerful tracer technique for tracking geological processes. In Mg isotopic analysis by LA-MC-ICP-MS, medium or high mass resolution was commonly applied to avoid spectral interferences. However, the improved mass resolution can result in reduced intensity and an aggravated matrix effect. In this study, the analytical results demonstrated that the main interferences ((CN+)-C-12-N-14 and Ca-48(2+)) in Mg isotopic analysis can be significantly suppressed, and the matrix effect can be significantly reduced with water added after the laser ablation cell (i.e., wet condition or wet plasma) using fs-LA-MC-ICP-MS. Thus, accurate and precise Mg isotopic composition can be achieved with low mass resolution and the non-matrix-matched calibration method by fs-LA-MC-ICP-MS. The applicability of the combination of low mass resolution and wet plasma was systematically evaluated by the assessment of the interferences, the Mg three-isotope plot, instrumental long-term reproducibility and the intensity mismatch effect. Applying the optimized method, accurate and precise Mg isotopic compositions in silicate reference materials with various matrices can be achieved.
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| GB/T 7714 | Lin, Jie , Liu, Yongsheng , Yang, Ao et al. Non-matrix-matched calibration of Mg isotopic ratios in silicate samples by fs-LA-MC-ICP-MS with low mass resolution under wet plasma conditions [J]. | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY , 2022 , 37 (3) : 592-602 . |
| MLA | Lin, Jie et al. "Non-matrix-matched calibration of Mg isotopic ratios in silicate samples by fs-LA-MC-ICP-MS with low mass resolution under wet plasma conditions" . | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY 37 . 3 (2022) : 592-602 . |
| APA | Lin, Jie , Liu, Yongsheng , Yang, Ao , Chen, Wei , Zhu, Lvyun , Hu, Zhaochu . Non-matrix-matched calibration of Mg isotopic ratios in silicate samples by fs-LA-MC-ICP-MS with low mass resolution under wet plasma conditions . | JOURNAL OF ANALYTICAL ATOMIC SPECTROMETRY , 2022 , 37 (3) , 592-602 . |
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The Zhaiping Ag-Pb-Zn vein deposit in the Coastal Volcanic Belt of southeastern China, which resulted from subduction of the paleo-Pacific oceanic lithosphere beneath the South China Block, is hosted by Early Cretaceous sub-volcanic rocks (rhyolite porphyry) and younger granite porphyry and quartz porphyry. Three generations of veins have been recognized: (i) pre-ore quartz + pyrite, (ii) syn-ore silver + pyrite + pyrrhotite + base metal sulfides + quartz + sericite, and (iii) post-ore quartz + calcite + fluorite veins. Rubidium-Sr dating of syn-ore pyrite yielded an isochron age of 132.2 +/- 2.1 Ma (2 sigma, MSWD = 2.0, n = 4), which is roughly coincidental with the age of the granite porphyry and quartz porphyry (zircon U-Pb age: ca. 133 Ma). The age data, together with Pb, S, H, and O isotopic compositions, indicate a close temporal and possibly genetic relationship between mineralization and porphyry magmatism at Zhaiping. Geochemical and isotope data demonstrate that the Zhaiping sub-volcanic rocks were derived from partial melting of Proterozoic crustal sources and underwent fractionation of feldspars, monazite, and/or allanite. The Sr-87/Sr-86 ratios of pre-ore (Ap(h1)) and syn-ore (Ap(h2)) stage apatite are in the ranges of 0.71350 to 0.71441 and 0.71260 to 0.71328, respectively, which are distinct from those of the sub-volcanic intrusive rocks (0.7119-0.7125). The Sr isotope signature, together with lower fluid temperatures (< 360 degrees C) relative to typical magmatic fluid, points at addition of an external fluid. It is suggested that the sub-volcanic intrusion acted as a heat source that drove the dehydration of, and subsequent fluid circulation within, the host rocks. Lower Sr-87/Sr-86 ratio but higher Sr content of Ap(h2) relative to Ap(h1) possibly indicates continuous fluid-rock interaction and progressive decomposition of feldspar in the host rocks, thus supplying large amounts of Sr and probably Pb to the ore fluid.
Keyword ：
Ag-Pb-Zn deposit Ag-Pb-Zn deposit Apatite Apatite Southeast China Southeast China Sr-Nd-Pb Hf isotope geochemistry Sr-Nd-Pb Hf isotope geochemistry Zhaiping deposit Zhaiping deposit
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| GB/T 7714 | Ma, Ying , Jiang, Shao-Yong , Frimmel, Hartwig E. et al. Age and fluid source of the sub-volcanic Zhaiping Ag-Pb-Zn deposit in the eastern Cathaysia Block (Fujian Province, Southeastern China) [J]. | MINERALIUM DEPOSITA , 2021 , 57 (3) : 439-454 . |
| MLA | Ma, Ying et al. "Age and fluid source of the sub-volcanic Zhaiping Ag-Pb-Zn deposit in the eastern Cathaysia Block (Fujian Province, Southeastern China)" . | MINERALIUM DEPOSITA 57 . 3 (2021) : 439-454 . |
| APA | Ma, Ying , Jiang, Shao-Yong , Frimmel, Hartwig E. , Duan, Rui-Chun , Zhu, Lu-Yun , Chen, Run-Sheng . Age and fluid source of the sub-volcanic Zhaiping Ag-Pb-Zn deposit in the eastern Cathaysia Block (Fujian Province, Southeastern China) . | MINERALIUM DEPOSITA , 2021 , 57 (3) , 439-454 . |
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