Article
Geology
Xian Liang, Fang-Yue Wang, Long Zhang, Jun-Wu Zhang, Chang-Shuai Wei, Yu Fan, Xian-Zheng Guo, Tao-Fa Zhou, Ju-quan Zhang, Qing-Tian Lu
Summary: This study investigates the distribution and enrichment of Co in the Zhuchong iron deposit in the Middle-Lower Yangtze River Valley Metallogenic Belt in eastern China. The results highlight pyrite as the primary carrier of Co and reveal a temperature-dependent enrichment of Co in pyrite at Zhuchong.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Baoyi Zhang, Kun Xu, Umair Khan, Xuefeng Li, Linze Du, Zhanghao Xu
Summary: In this study, a lightweight three-dimensional convolutional neural network method is proposed for concealed ore deposit exploration. It can effectively extract crosscorrelations among geological factors and generate fewer parameters in the face of massive data. Compared to previous studies, this method overcomes some drawbacks and shows better prediction effectiveness and efficiency.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Zhan-Ke Li, Chang Wang, Zhen-Qiang Wang, Kai -Wen Li, Jun-Jie Zhou, Xiao-Ming Li, Jia Hu, Jun Zhang
Summary: The Nannihu ore field in the southern North China Craton is home to a variety of valuable mineral resources, including Mo, W, Zn, Pb, Cu, and Ag. Through a comprehensive geological, geochronological, and pyrite geochemical study, researchers have uncovered the relationships between different types of deposits in the area. The findings reveal a giant magmatic-hydrothermal metallogenic system, with zonation of porphyry, skarn, and epithermal mineralization. The multi-episode magmatism and mineralization have led to the significant enrichment of mineral resources in the Nannihu ore field.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Xuan Wang, Jingwen Mao, Changqing Zhang, Da Zhang, Xinming Zhang, Yongfei Tian, Wei Jian, Mingjian Yang, Songyan Liu, Wenjie Li, Wensheng Shi, Zhenxu Liu
Summary: The Xiayu Ag-Pb-Zn-Au deposit in the southern North China Craton has been studied to understand the connection between extensional faults and vein-hosted mineralization. New structural data and fault-slip data analysis were used to determine that the region experienced two discrete stress fields, leading to the formation of fault-fill veins (stage I) and extensional veins (stage II). These veins are believed to have formed during regional extension in different directions.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Xiang-Ying Ye, Bin Li, Xiao-Dong Chen, Jing Lei, An-Huai Lu, Lei Zhao, Xing Li, Dong-Bo Tana, Yilin Xiao
Summary: This study investigates the geochemistry and Li isotopes of the Renli-Chuanziyuan lithium-niobium-tantalum deposit in China's Mufushan batholith, finding that magmatic volatile phase (MVP) exsolution is related to pegmatite formation and MVP migration plays a role in the different Li isotopic compositions of pegmatites. The results suggest that MVP exsolution, migration, and accumulation are key factors in rare metal mineralization.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Madani Benyoucef, Imad Bouchemla
Summary: Trace fossils representing various species and morphological categories were discovered in the mid-Cretaceous deposits in Gara Samani, Algeria. These fossils provide new insights into the environment and taphonomy of the time, shedding light on the processes of exposure and erosion of vertebrate remains.
CRETACEOUS RESEARCH
(2023)
Article
Geology
Hironao Matsumoto, Junichiro Kuroda, Rie S. Hori, Katsuhiko Suzuki
Summary: The early Aptian oceanic anoxic event (OAE) 1a is a significant event in the Cretaceous period, and the causal link between the organic-rich sediments and the Ontong Java Nui basalts has been debated. The Goshikinohama-bedded chert, a sedimentary sequence in the deep pelagic Pacific, provides insights into the OAE1a interval. The 187Os/188Os record of the Goshikinohama-bedded chert shows shifts to unradiogenic values, indicating a potential correlation with OAEs.
CRETACEOUS RESEARCH
(2023)
Article
Geology
Yan Dao, Jia-Xi Zhou, Xiao-Hu Wang, Ya-Hui Zhang, Guo-Tao Sun, Zheng-Peng Yue, Ye He
Summary: This study investigates the enrichment of selenium in the Dingtoushan Se-rich Pb-Zn deposit and finds that selenium enrichment in sphalerite is jointly controlled by fluid mixing and temperature.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Yin-Chuan Li, Hai-Zhen Wei, Martin R. Palmer, Yi-Jing Wang, Wei Li, Yue Cai, Yuan-Feng Zhu, Jun-Lin Wang, Jian-Jun Lu
Summary: Geothermal waters in the Shiquanhe-Yarlun Zangbo geothermal field in southern Tibet have a unique Cs-deposit formed by the enrichment of rare alkali metals (RAMs). The study investigates the migration and accumulation of RAMs in the geothermal system reservoir by analyzing boron isotopes, leucogranite, geothermal springs, and geyserite. The findings suggest that RAMs enrichment occurs during the partial melting of crustal materials and is further promoted by intense water-rock interaction at high temperatures in the geothermal system. The research also shows that a strong adsorption process controls the hyper enrichment of RAMs in geyserites.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Changzhi Li, Pei Guo, Kai Zhong, Jinghong Xu, Huaguo Wen
Summary: Authigenic silicates in alkaline lake deposits play an important role in reconstructing paleoclimates, paleoenvironments, and subsidence histories of hydrocarbon reservoirs. This study investigates the Late Paleozoic alkaline lake deposit in the NW Junggar Basin, NW China and emphasizes the influence of organic matter diagenesis and temperature on the evolution of authigenic silicates.
SEDIMENTARY GEOLOGY
(2023)
Article
Geology
Mahmut Sari
Summary: In this study, horizontal and vertical displacement and stress-deformation analyses were conducted on the body of the Midi Waste Dam. The seismic method was used to determine the elasticity modulus and Poisson's ratio of the soil, and Leps' charts were used to determine the cohesion and internal friction angle of the rock fill. The research found that the dam body was stable and did not have any instability issues.
Article
Geology
Nan Qi, A. E. Williams-Jones, Jie Yu, YanJing Chen
Summary: The Leimengou giant Mo deposit is a porphyry system located in northeastern China, with detailed studies on its origin, geochemical characteristics, and formation time.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Enming Li, Pablo Segarra, Jose A. Sanchidrian, Santiago Gomez, Alberto Fernandez, Rafael Navarro, Maurizio Bernardini
Summary: This paper describes a practical application of support vector machine (SVM) for ore grading in an underground fluorite mine. It covers all aspects from the inception of the experiments, data collection, input preparation, model description and results. The SVM hyperparameters are calibrated using a well-known metaheuristic algorithm. The proposed methodology shows promising results in reducing the amount of lab analysis in ore grade control.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Yuzhou Feng, Wanjian Lu, Bing Xiao, Chao Wu, Hui Zheng
Summary: Regolith-hosted rare earth element (REE) deposits, such as the Gucheng deposit in western Guangdong Province, are common in South China. This study analyzed apatite grains from weathered coarse-grained biotite granites (CGBG) to understand the petrogenesis of CGBG and implications for REE mineralization. The analysis revealed the crystallization age of CGBG, the mixing of crust and mantle sources, and the contribution of apatite in REE mineralization.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Hong-Yang Bai, He Wang, Xiao-Yu Zhang, Bao-Zhang Zhu, Kun-Yu Wang, Liang Huang
Summary: The Xuefengling rare metal pegmatite deposit in the West Kunlun orogenic belt of Northwest China shows similar characteristics to the Bailongshan deposit. Detailed analysis of the textures and mineral assemblages of the pegmatites in the Xuefengling deposit revealed four zones. The study suggests that the Xuefengling pegmatites may have formed from the lower degrees of fractional crystallization.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Lu Zhang, Hui-Min Su, Shao-Yong Jiang, Rolf L. Romer, Song Chen, Jialin Xu
Summary: The Niangniangding Be deposit is a Be-only deposit located in the Tongbai-Dabie orogen. The Be mineralization is mainly hosted in albitized granite in the contact zone between biotite monzogranite and metasedimentary rocks, with Genthelvite as the major carrier of Be. The study suggests that the ore-forming fluids and metals may come from non-exposed Cretaceous intrusions and metasedimentary wall rocks.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Saddam Qaisar, Xiaoyan Zhao, Sulaiman Khan, Imad Ullah Khan, Asif Alam, Jaseem Ul Haq, Shayan Ahmad, Xuecheng Zhao
Summary: Dolomitization is a significant diagenetic reaction in carbonate systems, and this study investigates and documents the characteristics of Devonian carbonates in the Peshawar basin, Pakistan. Field observations, petrographic studies, and geochemical analyses reveal the diagenetic processes and features of dolomite formations influenced by hydrothermal fluids and magmatic intrusions.
CARBONATES AND EVAPORITES
(2023)
Article
Geology
Abdelhamid M. Salman
Summary: This study interprets the carbonate stacking patterns in the Upper Cretaceous strata of the Ras Budran Field in the Gulf of Suez, Egypt, based on well logging and geological analysis. Three types of electro-facies were identified, indicating different depositional settings. The evolution of the carbonate stacking patterns is mainly influenced by sea-level fluctuations and tectonic events within the basin.
CARBONATES AND EVAPORITES
(2023)
Article
Geology
Wanying Zhang, Yan Liu, Wancang Zhao
Summary: This study reveals the enrichment mechanism of cobalt in Fe-Mn nodules and identifies its association with manganese and iron phases. The enrichment of iron favors the formation of Fe-Vernadite in cobalt-rich nodules, thereby facilitating higher cobalt contents.
ORE GEOLOGY REVIEWS
(2023)
Article
Geology
Sacit Ozer, Liana Sasaran
Summary: This study re-examined Lattenbergites Lupu and found that it shares diagnostic features with Joufia milovanovici, suggesting that Lattenbergites Lupu is actually a junior synonym of Joufia milovanovici. The distribution of J. milovanovici in different regions of the Mediterranean Tethys during the Late Cretaceous was also described and re-evaluated.
CRETACEOUS RESEARCH
(2023)
