Acta Geologica Sinica ‐ English Edition最新文献

Remote Sensing-based Machine Learning Techniques for Mapping Gold-Mineralized Alteration Zones in the Fatira Mine Area, Egypt 基于遥感的机器学习技术在埃及法提拉矿区金矿化蚀变带制图中的应用

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15333

Refaey EL-WARDANY, Jiangang JIAO, Basem ZOHEIR, Lobna KHEDR, Mustafa KUMRAL, Lei LIU, Ibrahem ABU EL-LEIL, Ahmed ORABI, Lotfy ABD EL-SALAM, Amr ABDELNASSER

{"title":"Remote Sensing-based Machine Learning Techniques for Mapping Gold-Mineralized Alteration Zones in the Fatira Mine Area, Egypt","authors":"Refaey EL-WARDANY, Jiangang JIAO, Basem ZOHEIR, Lobna KHEDR, Mustafa KUMRAL, Lei LIU, Ibrahem ABU EL-LEIL, Ahmed ORABI, Lotfy ABD EL-SALAM, Amr ABDELNASSER","doi":"10.1111/1755-6724.15333","DOIUrl":"https://doi.org/10.1111/1755-6724.15333","url":null,"abstract":"In the Fatira (Abu Zawal) mine area, located in the northern Eastern Desert of Egypt, fieldwork and mineralogical analysis, integrated with machine learning techniques applied to Landsat-8 OLI, ASTER, and Sentinel-2 multi-spectral imagery (MSI) data delineate gold-sulfide mineralization in altered rocks. Gold (Au) anomalies in hydrothermal breccias and quartz veins are associated with NE-oriented felsite dykes and silicified granitic rocks. Two main alteration types are identified: a pyrite-sericite-quartz and a sulfide-chlorite-carbonate assemblage, locally with dispersed free-milling Au specks. Dimensionality reduction techniques, including principal component analysis (PCA) and independent component analysis (ICA), enabled mapping of alteration types. Sentinel-2 PC125 composite images offered efficient lithological differentiation, while supervised classifications, i.e., the support vector machine (SVM) of Landsat-8 yielded an accuracy of 88.55% and a Kappa value of 0.86. ASTER mineral indices contributed to map hydrothermal alteration mineral phases, including sericite, muscovite, kaolinite, and iron oxides. Results indicate that post-magmatic epigenetic hydrothermal activity significantly contributed to the Au-sulfide mineralization in the Fatira area, distinguishing it from the more prevalent orogenic gold deposits in the region.","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":"99 4","pages":"1196-1223"},"PeriodicalIF":3.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923358","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Orbital-scale Climate Dynamics may Impact Gzhelian Peatland Wildfire Activity in the Ordos Basin 轨道尺度气候动力学可能影响鄂尔多斯盆地格哲连泥炭地野火活动

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15327

Wenxu DU, Dawei LÜ, Zhihui ZHANG, Munira RAJI, Cuiyu SONG, Luojing WANG, Ruoxiang YUAN, Yuzhuang SUN

{"title":"Orbital-scale Climate Dynamics may Impact Gzhelian Peatland Wildfire Activity in the Ordos Basin","authors":"Wenxu DU, Dawei LÜ, Zhihui ZHANG, Munira RAJI, Cuiyu SONG, Luojing WANG, Ruoxiang YUAN, Yuzhuang SUN","doi":"10.1111/1755-6724.15327","DOIUrl":"https://doi.org/10.1111/1755-6724.15327","url":null,"abstract":"The Carboniferous, an important coal-forming period in geological history, was characterized by extensive vegetation and high oxygen levels. Evidence suggests frequent wildfires took place during this time, especially in peatlands. However, the control mechanisms for changes in wildfire activity in peatlands during this period remain unclear. In this study, evidence from the Gzhelian in the Ordos Basin, such as the inertinite/vitrinite (I/V) ratio, indicated varying wildfire frequencies. Climate indicators (CaO/MgO and CaO/MgO·Al2O3) revealed that high-frequency wildfires mainly occurred in warm and humid climates. Based on former age constraints, we deduced that orbital cycles (long eccentricity) controlled the climate influence on peatland wildfires during the Gzhelian. Higher eccentricity brought more sunshine and rainfall, creating warmer, wetter peatlands conducive to vegetation growth, which increased fuel loads and led to more wildfires. Global Gzhelian wildfire records show that wildfires occurred mainly in tropical regions with abundant vegetation, reinforcing the idea that fuel loads drove fire activity. While wildfires can release mercury (Hg), the frequent volcanic activity during this period likely contributed significantly to Hg enrichment.","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":"99 4","pages":"1182-1195"},"PeriodicalIF":3.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923434","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Erratum to “Cenozoic Vertically-tearing of Indian Slab Modified the Asian Lithosphere beneath the Eastern Tibetan Plateau”

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15336

引用次数: 0

Sequence of Tight Sandstone Reservoir Densification and Oil Charging in the Yanchang Formation of the Southern Ordos Basin, China 鄂尔多斯盆地南部延长组致密砂岩储层致密化层序与油气充注

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15320

Zhen WANG, Honghan CHEN, Faqi HE, Lianbo ZENG, Chunquan LI, Bo XIANG, Xiuyan LIU, Mehdi OSTADHASSAN

{"title":"Sequence of Tight Sandstone Reservoir Densification and Oil Charging in the Yanchang Formation of the Southern Ordos Basin, China","authors":"Zhen WANG, Honghan CHEN, Faqi HE, Lianbo ZENG, Chunquan LI, Bo XIANG, Xiuyan LIU, Mehdi OSTADHASSAN","doi":"10.1111/1755-6724.15320","DOIUrl":"https://doi.org/10.1111/1755-6724.15320","url":null,"abstract":"The origin of tight reservoirs in the Yanchang Formation of the Ordos Basin and their relationship with hydrocarbon charging remain unclear. Based on petrological observations, physical property analysis, fluid inclusion system analysis and in situ U-Pb dating, the sequence of tight sandstone reservoir densification and oil charging was determined. Through petrological observations, fluid inclusion analysis and physical property analysis, it is concluded that compaction and cementation are the primary causes of reservoir densification. When the content of calcite cement is less than or equal to 7%, compaction dominates densification; otherwise, cementation becomes more significant. However, determining the exact timing of compaction densification proved challenging. Microscopic observations revealed that oil charging likely occurred either before or during the densification of the reservoir. According to in situ U-Pb dating and the porosity evolution curve, cementation densification occurred between 167.0 ± 20.0 Ma and 151.8 Ma. Temperature measurements of the aqueous inclusions indicate that oil charging occurred between 125.0 and 96.0 Ma, suggesting that densification preceded oil charging. This study provides valuable insights for the future exploration of tight oil reservoirs in the Ordos Basin.","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":"99 4","pages":"1134-1152"},"PeriodicalIF":3.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923343","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Deep-water Natural Gas Differential Migration and Enrichment in East African Transform Continental Marginal Basins 东非转型大陆边缘盆地深水天然气差异运移富集

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15329

Jun CAI, Youbin HE, Jianshe LIANG, Rong GUO

{"title":"Deep-water Natural Gas Differential Migration and Enrichment in East African Transform Continental Marginal Basins","authors":"Jun CAI, Youbin HE, Jianshe LIANG, Rong GUO","doi":"10.1111/1755-6724.15329","DOIUrl":"https://doi.org/10.1111/1755-6724.15329","url":null,"abstract":"Compared to discrete continental marginal basins, the mechanisms of hydrocarbon migration and enrichment in transform continental marginal basins are poorly understood. In this study, we conducted a comprehensive analysis of the main source rocks, reservoirs, and vertical migration pathways within the Rovuma (RB) and Tanzania (TB) basins in East Africa utilizing drilling, logging, seismic, and geochemical data. The results indicate that the enhanced preservation conditions of the Lower Jurassic source rocks in the southwest could lead to the discovery of large natural gas fields in the southern TB and RB. The primary reservoir is a deep-water turbidite sandstone. Due to topographic differences, the expanse of the turbidite sandstones in the RB is significantly larger than those in Tanzania. The main vertical migration pathways are the western boundary fault zone of the Kerimbas Graben (WBFZ) and the Seagap fault zone (SFZ). In the RB, natural gas migrates vertically along the WBFZ and preferentially accumulates in the deep-water turbidite sandstones of the footwall under the control of the fluid potential. Conversely, in the southern TB, the deep natural gas first migrates upward along the SFZ, then moves along the shallow branch faults in the sandstones on both sides of the SFZ.","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":"99 4","pages":"1105-1118"},"PeriodicalIF":3.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923356","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Coexisting Depleted and Enriched Mantle-derived Magmatic Rocks in the Liaodong Peninsula: Implications for the Destruction of the North China Craton 辽东半岛贫与富共存的幔源岩浆岩：对华北克拉通破坏的启示

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15324

Kun WANG, Xingpeng WANG, Caiyun LAN, Yali LIU, Bin LIU, Quan OU, Jiajian MO, Jialin YANG, Fanwei MENG

{"title":"Coexisting Depleted and Enriched Mantle-derived Magmatic Rocks in the Liaodong Peninsula: Implications for the Destruction of the North China Craton","authors":"Kun WANG, Xingpeng WANG, Caiyun LAN, Yali LIU, Bin LIU, Quan OU, Jiajian MO, Jialin YANG, Fanwei MENG","doi":"10.1111/1755-6724.15324","DOIUrl":"https://doi.org/10.1111/1755-6724.15324","url":null,"abstract":"The North China Craton (NCC) experienced significant lithospheric thinning of over 100 km during the Mesozoic, accompanied by extensive magmatic activity and extensional tectonics. However, the timing and mechanism of this thinning remain the subjects of debate. This study presents zircon U-Pb ages, Hf isotopic data and whole-rock elemental and Sr-Nd isotopic compositions of the Guanshui monzonites and diorites in the eastern NCC. Zircon U-Pb dating reveals that both rock types formed at ca. 130 Ma. The monzonites, characterized by high Mg# (50.9–57.9), low Nb/U ratios (2.53–3.89) and depleted isotopic compositions, suggest derivation from asthenospheric mantle modified by slab-derived fluids. The diorites, distinguished by low SiO2 (49.5–50.8), high Mg# (66.7–68.5) and an EM2-type enriched mantle isotopic signature, point to a lithospheric mantle source modified by subducted sediment melts. The coexistence of monzonites and diorites suggests a transition in magma source from lithospheric to asthenospheric mantle, implying that lithospheric thinning may have commenced around 130 Ma. The destruction of the NCC was likely driven by localized, small-scale drip-style detachment processes, rather than wholesale lithospheric removal.","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":"99 4","pages":"961-977"},"PeriodicalIF":3.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Petrogenesis of the Xuexiumaer Biotite Quartz Monzonite Porphyry in Southern Gangdese and its Implications for Paleo-Crustal Thickness of the Qinghai–Tibet Plateau

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15322

Zuowen DAI, Guangming LI, Hong LIU, Hanxiao HUANG, Jiangang FU, Jan Marten HUIZENGA

{"title":"Petrogenesis of the Xuexiumaer Biotite Quartz Monzonite Porphyry in Southern Gangdese and its Implications for Paleo-Crustal Thickness of the Qinghai–Tibet Plateau","authors":"Zuowen DAI, Guangming LI, Hong LIU, Hanxiao HUANG, Jiangang FU, Jan Marten HUIZENGA","doi":"10.1111/1755-6724.15322","DOIUrl":"https://doi.org/10.1111/1755-6724.15322","url":null,"abstract":"The Qinghai–Tibet Plateau possesses the thickest continental crust on Earth, yet the timing of its formation remains debated. In this study, we conducted zircon U-Pb isotopic dating, geochemical and Sr-Nd-Pb-Hf isotopic analyses on the Xuexiumaer biotite quartz monzonite porphyry (BQMP) sampled from the Lake Dajia area in southern Gangdese. This study aims to estimate the paleo-crustal thickness beneath this region during the early India-Asia collision stage using whole-rock Sr/Y and (La/Yb)N ratios as proxies. Results reveal that the Xuexiumaer BQMP was formed at ~51 Ma in a collisional tectonic setting following Neo-Tethyan slab breakoff, and is an I-type granitoid derived primarily from partial melting of juvenile mafic lower crust with subordinate ancient crustal input. The estimated paleo-crustal thickness in the Lake Dajia area at ~51 Ma is less than 40 km. This indicates that although the Qinghai–Tibet Plateau had already undergone significant crustal thickening and attained an exceptionally thick crust (>50 km) prior to the India–Asia collision as demonstrated by previous studies, some regions still maintained a crust only slightly thicker than the average continental crust (~35 km) at the initial collision stage. This limited crustal thickening likely resulted from underplating of subduction-related mafic magma at the mantle-crust boundary.","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":"99 4","pages":"978-994"},"PeriodicalIF":3.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923619","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Genesis and Metallogenic Potential of the 80 Ma High Sr/Y Anglonggangri Granodiorite in the Northwestern Lhasa Block, China 拉萨地块西北部80 Ma高Sr/Y昂龙岗日花岗闪长岩成因及成矿潜力

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15325

Baoliang LI, Liqiang WANG, Shilin DENG, Pingcuo ZHAXI, Teng GAO, Taqing LUOSANG, Haiyong WANG

{"title":"Genesis and Metallogenic Potential of the 80 Ma High Sr/Y Anglonggangri Granodiorite in the Northwestern Lhasa Block, China","authors":"Baoliang LI, Liqiang WANG, Shilin DENG, Pingcuo ZHAXI, Teng GAO, Taqing LUOSANG, Haiyong WANG","doi":"10.1111/1755-6724.15325","DOIUrl":"https://doi.org/10.1111/1755-6724.15325","url":null,"abstract":"Multiple instances of the Late Cretaceous granodiorites within the Anglonggangri region of the northwestern Lhasa Block were identified, their petrogenesis were explored and mineralization potential were assessed. The zircon U-Pb dating of the Anglonggangri granodiorites revealed ages of 82.8 and 80.8 Ma. Granodiorite samples have SiO2 contents of 64.36–68.33 wt%, with high Sr/Y (55–95) and A/CNK ratios (0.99–1.06). Zircon εHf(t) values range from –0.3 to +16.2. Two granodiorite samples have (87Sr/86Sr)i values of 0.7034 and 0.7043 and positive εNd(t) values of 3.51 and 3.83. These geochemical properties indicate that they are adakitic rocks formed by partial melting of the juvenile thickened lower crust, slightly contaminated with material from the mantle due to the small-scale delamination of the lower crust. The zircons in the granodiorites have moderate Ce/Nd (2.5–43), logfO2 (–20.0 to –9.6), and ΔFMQ (–1.28 to +4.00) values; low (Ce/Nd)/Y (0.001–0.049) ratios; and high Dy/Yb (0.17–1.16) ratios, which indicate that these granodiorites exhibit moderate oxygen fugacity and lower magma water content than the Miocene Gangdese porphyry copper deposits associated with high-Sr/Y granites. Their ability to create porphyry-type copper deposits could have been hampered by their low magma water content and moderate oxygen fugacity.","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":"99 4","pages":"1013-1024"},"PeriodicalIF":3.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923621","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Geochemistry and U-Th-Pb Geochronology of Monazite in the Suzhou A-type Granite Pluton: Implications for Nb-Ta Mineralization 苏州a型花岗岩体中独居石的地球化学和U-Th-Pb年代学：对铌钽矿化的指示意义

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15321

Wei PAN, Qinghai HU, Hui WU, Yiyi BAN, Bimin ZHANG, Binbin SUN, Wei WANG, Xuemin LIU, Xueqiu WANG, Qiuli GONG

{"title":"Geochemistry and U-Th-Pb Geochronology of Monazite in the Suzhou A-type Granite Pluton: Implications for Nb-Ta Mineralization","authors":"Wei PAN, Qinghai HU, Hui WU, Yiyi BAN, Bimin ZHANG, Binbin SUN, Wei WANG, Xuemin LIU, Xueqiu WANG, Qiuli GONG","doi":"10.1111/1755-6724.15321","DOIUrl":"https://doi.org/10.1111/1755-6724.15321","url":null,"abstract":"The Suzhou granitic pluton is the first identified Nb-Ta-rich granite in China. To reveal the genetic link between the sequence of magmatic and hydrothermal evolution and Nb-Ta mineralization in different intrusive phases of the Suzhou granite, whole-rock geochemistry, geochemistry and U-Th-Pb dating of monazite was analyzed. The unique geochemical characteristics show that the Suzhou pluton can be discriminated as an A-type granite. LA-ICP-MS U-Th-Pb dating of monazite in both the medium- and coarse-grained biotite granite (MBG) and the fine-grained biotite granite (FBG) indicates that the granite formed between 124 and 127 Ma. Based on geochemical characteristics and mineral textures, the MBG (Mnz-Ia) and FBG (Mnz-Ib) monazites are classified as magmatic monazites; another monazite (Mnz-II) from the MBG formed during a magmatic-hydrothermal transitional stage. Nb-Ta in the Suzhou pluton gradually concentrated during fractional crystallization and alteration of Ti-rich minerals and biotite. Ultimately, with the involvement of F-Li-rich fluid, Nb-Ta mineralization occurred during the magmatic–hydrothermal transition. The Suzhou pluton is considered part of a 600-km- and NE–SW-trending Nb-rich A-type granite belt together with other Early Cretaceous A-type granites in the Jiangnan Orogen that offers prospects of a new target for Nb-Ta prospecting.","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":"99 4","pages":"1025-1041"},"PeriodicalIF":3.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Distribution Characteristics and Genetic Mechanisms of Geothermal Radon Mineral Water in Shandong Province 山东省地热氡矿泉水分布特征及成因机制

IF 3.7 3区地球科学

Acta Geologica Sinica ‐ English Edition Pub Date : 2025-09-01 DOI: 10.1111/1755-6724.15323

Caiping HU, Xinfei BAI, Lixin ZHU, Jinyu SONG, Wenquan PENG, Shijiao YANG, Huanren HONG, Tong ZHAO, Jun ZHANG, Chao YU, Tao WANG, Liang SONG, Na DONG

{"title":"Distribution Characteristics and Genetic Mechanisms of Geothermal Radon Mineral Water in Shandong Province","authors":"Caiping HU, Xinfei BAI, Lixin ZHU, Jinyu SONG, Wenquan PENG, Shijiao YANG, Huanren HONG, Tong ZHAO, Jun ZHANG, Chao YU, Tao WANG, Liang SONG, Na DONG","doi":"10.1111/1755-6724.15323","DOIUrl":"https://doi.org/10.1111/1755-6724.15323","url":null,"abstract":"This study systematically investigates the concentration of 222Rn in geothermal fluids and the distribution of geothermal radon mineral water in Shandong Province, with the aim of elucidating formation mechanisms and influencing factors. The findings indicate that the overall abundance of 222Rn in geothermal fluids across the region is relatively low. Geothermal radon mineral water is primarily located within banded thermal reservoirs associated with bedrock fracture structures in the Ludong and Luxi uplift geothermal zones. The study reveals that the ionic composition, radioactivity intensity, and extent of water-rock interactions exert only effects in the concentration of 222Rn in geothermal fluids. The formation of geothermal radon mineral water is predominantly governed by “fracture-controlled” mechanisms, with thermal reservoir lithology, fracture tectonics, and seismic activity serving as key determinants. Additionally, the enrichment of 222Rn in geothermal fluids is influenced by factors such as geothermal fluid temperature, depth of occurrence, cap rock thickness, and alteration processes. The genetic mechanisms of geothermal radon mineral water can be categorized into two types: ‘native’ and ‘composite’. These findings provide critical insights into the exploration and development of geothermal radon mineral water resources in Shandong and similar regions.","PeriodicalId":7095,"journal":{"name":"Acta Geologica Sinica ‐ English Edition","volume":"99 4","pages":"1169-1181"},"PeriodicalIF":3.7,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144923433","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0