Article
Geology
Bo Hui, Yunpeng Dong, Franz Neubauer, Shuai He, Jan Varga
Summary: The Neoproterozoic Zhoutan Group in South China provides an important record of sedimentary system, with new detrital zircon U-Pb dating revealing its depositional age, provenance mainly from the Jiangnan Orogen, and metamorphic history during the Silurian period. These findings suggest its tectonic affinity between the Yangtze and Cathaysia Blocks with a potential boundary north of its current location.
INTERNATIONAL GEOLOGY REVIEW
(2021)
Article
Geology
Zhekai Zhou, Huan Li, Hengrui Zhu, Majid Ghaderi, Liming Ouyang
Summary: This study examines the zircons in typical ore samples from the Xikuangshan and Woxi deposits in the Xiangzhong metallogenic province, South China, using trace element, U-Pb dating, and Hf isotopic analysis. The results provide new insights into the sources and processes of metal and fluid in these deposits. The zircons in samples from the Xikuangshan deposit have similar U-Pb age distributions with their host and basement rocks, while the zircons from the Woxi deposit have younger U-Pb ages associated with contemporaneous magmatism in South China. The differences in mineralization processes between the two deposits are reflected in the alteration degree and elemental concentrations of zircons. The sources of zircons and mineralizing material are distinct for the Xikuangshan and Woxi deposits, with the former originating from basement rocks and the latter from magmatism.
ORE GEOLOGY REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Tianxiang Kan, Longming Li, Mo Chen, Hang Liu, Xilin Zhao, Ren Jiang, Xu Han
Summary: Integrated analysis of zircon U-Pb dating, in-situ Lu-Hf, and whole-rock geochemical data on Silurian-Permian siliciclastic rocks in the Lower Yangtze region reveals the tectono-sedimentary evolution in the Paleozoic, indicating different provenances and three evolution stages.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Bingbing Liu, Touping Peng, Weiming Fan, Guochun Zhao, Jianfeng Gao, Xiaohan Dong, Shili Peng, Limin Wu, Bingxia Peng
Summary: South China and India, along with their derivative blocks, have similar magmatic and sedimentary records that provide insights into the transition from Rodinia to Gondwana. The new results, combined with published data, reveal a continuous link between South China and India from ca. 830 Ma to ca. 510 Ma, forming the South China-India Duo on the western margin of Rodinia. The development of rift systems and common magmatism and sedimentation indicate the geodynamic mechanism behind this transition. South China separated from Indian Gondwana around 510 Ma due to the opening of the Proto-Tethys Ocean.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2023)
Article
Geosciences, Multidisciplinary
Jiahao Chen, Qingfei Wang, M. Santosh, Long Qiao, Tingyi Wang, Yanning Wang, Qizuan Zhang
Summary: Detrital zircon analysis and thermochronology were conducted to study the plate boundary dynamics and basin sedimentation in the southwestern South China Block. Results indicate different provenances and tectonic events during the Early and Middle Triassic, with the turbidite system being primarily controlled by Palaeo-Pacific subduction in the Early Triassic and experiencing the impact of both Palaeo-Pacific subduction and Indochina Block collision in the Middle Triassic.
GEOLOGICAL JOURNAL
(2023)
Article
Geography, Physical
Yangbo Lu, Yong Yue, Yongchao Lu, Shu Jiang, Yuxuan Wang
Summary: The early Silurian succession in South China exhibits a lithofacies transition from organic-rich mudstone to interlaminated siltstone and mudstone with low organic carbon content, and finally to organic-lean argillaceous or calcareous mudstone. Through petrographic analyses, U-Pb dating of detrital zircons, and measurements of paleocurrent directions, it was found that the interlaminated siltstone and mudstone interval originated from volcanic eruptions and was reworked by bottom currents during the post-glacial transgression in the early Silurian.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geochemistry & Geophysics
Peng Wang, Guochun Zhao, Yigui Han, Qian Liu, Jinlong Yao, Shan Yu
Summary: The study reveals a close connection between South Tarim and North India in Gondwana, as well as the presence of Mesoproterozoic basement rocks in the South Western Kunlun Terrane. The northward subduction of the Proto-Tethys oceanic lithosphere was initiated prior to 487+/-7 Ma, as indicated by the andesitic lava sample with epsilon(Hf(t)) values clustering 10 to 15.
Article
Geosciences, Multidisciplinary
Qiong Chen, Guochun Zhao, Min Sun
Summary: The study of sediment provenance in South China reveals systematic temporal-spatial variations in response to global plate reorganization, with Neoproterozoic strata mainly sourced from the Panxi-Hannan arc and the Jiangnan orogen, while Cambrian sediments show contributions from the Cadomian arc belt and Grenvillian-age provinces. These variations signal the northward drifting of South China towards different regions during the late Neoproterozoic-Cambrian period, contributing to the ultimate Gondwana architecture under global plate reorganization.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
Li Sun, Wei Wang, Guimei Lu, Erkun Xue, Sifang Huang, Manoj K. Pandit, Bin Huang, Xirun Tong, Yang Tian, Yang Zhang
Summary: This study evaluates the sedimentological, geochronological, and geochemical data of the Kunyang Group in the Yangtze Block, shedding light on its crucial position in the Rodinia supercontinent and regional geodynamic evolution. The findings suggest a transition from continental rift to passive continental margin setting, followed by an active continental margin setting, with implications for the tectonic evolution of the South China Block and reconstruction of the Rodinia supercontinent.
PRECAMBRIAN RESEARCH
(2021)
Article
Geology
Jing-Yuan Zhang, Qingfei Wang, Xue-Fei Liu, Guo-Fa Zhou, Hai-Peng Xu, Yi-Guang Zhu
Summary: Permian lithium-rich karstic bauxites were discovered in central Yunnan province, China, and their origin and formation processes were studied. The differences between different profiles and the controlling factors of mineralization conditions were found. The results have important implications for the exploitation of aluminum and lithium.
ORE GEOLOGY REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Xiaozhuang Cui, Shoufa Lin, Jian Wang, Guangming Ren, Bingrui Su, Fenglin Chen, Qi Deng, Weihua Pang
Summary: The Huili Group in the Yangtze Block is important for understanding the tectonic history of the South China Block. The lower Huili Group is characterized by detrital zircon grains with ages from 2.80-2.40 Ga, 2.34-1.72 Ga, and 1.68-1.19 Ga, while the upper Huili Group contains grains with ages between 2.00-1.25 Ga and 1.2-1.0 Ga.
Article
Geosciences, Multidisciplinary
Chang-Hao Xiao, Zheng-Le Chen, Feng-Bin Han, Liang-Xi Wei, Liang-Tao Ma
Summary: This study presents U-Pb ages and Hf isotopic compositions of detrital zircons from a pebbly slate of clastic sedimentary rock in the West Qinling Orogenic Belt, providing insights into the Triassic tectonic setting in the region. Provenance analysis suggests multiple sources for the pebble-bearing slate, and the presence of an Early Triassic continental arc is implied by detrital zircon data. The integrated results indicate that the Longwuhe Formation was likely deposited in a forearc setting around 250 Ma, followed by arc magma intrusion in the Early Triassic, possibly associated with the northward subduction of the Qinling Paleo-Tethys Ocean lithosphere.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geology
En-Yuan Tian, Bin Xiao, Jun-Jun Zhang, Jian-Hua Qin, Yang Lai, Kun Ke, Kang-Zhi Tian, Jia-Wei Zhang, Ying Qin, You-Liang Chen, Da-Xing Gong
Summary: In southwest China, a new type of rare earth element (REE) deposit was discovered in the claystone layers of the late Permian Xuanwei Formation. The REE-rich claystones were deposited over a period of 2.6 million years at a very low average rate of deposition. The origin of the deposit is believed to be from a denuded region within the Emeishan Large Igneous Province, with ore metals mainly sourced from syenite.
ORE GEOLOGY REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Jiang Zhu, Yuqiong Chen, Chao Chen, Zhanke Li, Xianbin Shi, Song Chen, Yuanbing Zou
Summary: Geochronological data from the Huwan complex in the Dabie Orogen reveals three age populations for metasedimentary rocks and protolith U-Pb ages for metavolcanic rocks, indicating the presence of Paleo- to Mesoproterozoic magmatism. The age ranges coincide with specific tectonothermal events in the northern Yangtze Block, suggesting multiple orogenic cycles in the region.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2023)
Article
Geography, Physical
Xiaoqun Yang, Zhong Li, Biao Gao, Yuanquan Zhou
Summary: The middle Cambrian DICE event identified in the Tarim Basin is associated with sea-level changes, stromatolites, and negative shift in carbon isotopes. The event occurred around 504.5 Ma and triggered marine transgression and condensation layer formation.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Review
Geosciences, Multidisciplinary
Fuquan Yang, Xinxia Geng, Zhixin Zhang, Guoren Liu, Hanqing Zhang
Summary: Northern Xinjiang in China is an important part of the Central Asian Orogenic Belt, characterized by multiple episodes and types of mineralization. Cu and Au deposits are mostly found in Altay, Junggar, and Tianshan, with minor occurrences in Beishan. The most common types of Cu-Au deposits are volcanogenic and porphyry deposits. The formation of Cu-Au deposits can be divided into five mineralization episodes, with the Devonian and Carboniferous being the main periods. These deposits developed in various tectonic settings, including island arc, continental arc, collision, and postcollisional extensional tectonics.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Jiang Zhu, Dan-yang Liu, Chao Chen, Song Chen, Yuan-bing Zou, Leonid Danyushevsky, Jing-meng Huang, Xiang-wei Tang
Summary: Numerous lode gold and silver deposits have been discovered in orogenic belts in China. This study focuses on the formation and fluid evolutions of the super-large Yingdongpo gold and giant Poshan silver deposits in the Tongbai-Dabie orogen. The results suggest that both deposits were formed concurrently with Early Cretaceous granitic magmatism and the ore-forming fluids were primarily of magmatic origin with meteoric water inputting. The gold mineralization is related to a change in the physicochemical properties of the fluids, while the silver mineralization is favored by progressive deposition of sulfides in a slowly cooling hydrothermal system.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Arun Bhadran, B. P. Duarah, Drishya Girishbai, Mohammad Atif Raza, Avi Mero, Sandeep Lahon, A. L. Achu, Girish Gopinath
Summary: The Brahmaputra foreland basin, known for its dynamic tectonism and sediment load, exhibits a variety of seismically generated soft sediment deformation structures (SSDS) such as clastic dikes, sand sills, and micro-faults. These structures, influenced by multiple strong seismic events, are characterized by their dimensions, intrusion angles, cross-cutting relations, wall shattering, and age. The study suggests that a significant earthquake with high intensity and magnitude might have caused liquefaction features in the area. The findings highlight the importance of studying SSDS in tectonically active regions with limited surface ruptures and dense alluvial cover.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Huan Wang, Lirong Dou, Xingyang Zhang, Jiquan Yin, Beiwei Luo, Haigang Duan, Peiguang Yang, Yifan Song
Summary: Quantitative analysis of sediment composition and microfacies helped identify changes in facies belts in the Cretaceous Mishrif Formation. The study demonstrated the importance of carbonate microfacies quantification and its implications for paleogeographic research.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Boran Wang, Zhilong Huang, Dongsheng Xiao, Haiyue Yu, Wenren Zeng, Xin Wang, Tong Qu, Zhiyuan Li, Yizhuo Yang
Summary: By systematically analyzing the source rocks of the Sangonghe Formation in the Taibei Sag, NW China, and using kerogen kinetics modeling, this study reveals the influence of geological conditions on hydrocarbon generation and expulsion. The source rocks in different environments show distinct geochemical characteristics and hydrocarbon generation potential.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Haiying Yang, Zhifang Zhao, Haifeng Fan, Min Zeng, Jiafei Xiao, Xiqiang Liu, Shengwei Wu, Jiangqin Chao, Yong Xia
Summary: This paper investigates the REE enrichment and the role of Fe/Mn (oxyhydr)oxides in marine phosphorites from the early Cambrian period in South China. The study reveals that Fe/Mn (oxyhydr)oxides play a crucial role in REE enrichment and are controlled by Fe-redox pumping.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Qing Li, Hongbin Wang, Feng Cai, Di Luo, Fanxing Kong, Ang Li, Xiting Liu
Summary: The elemental and isotopic compositions and abundance of carbonates in marine sediments are used to reconstruct ancient climate and ocean conditions. This study analyzed sediment samples from the Okinawa Trough to examine the relationship between carbonates' compositions and methane seepage and sea-level changes. The results indicate that both biogenic and authigenic carbonates are important factors in understanding paleoclimate and paleoceanography.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Maryam Akbarzadeh Aghdam, Abdolreza Ghods, Farhad Sobouti, Khalil Motaghi, Keith Priestley, Mohammad Enayat
Summary: The Makran subduction zone is difficult to monitor due to limited seismic activity, but a temporary seismic network was installed to investigate the relationship between different regions and detect seismicity. The observed seismicity suggests the presence of structural boundaries and seismically inactive areas.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Zhen-Yu Wang, Hong-Rui Fan, Hai-Dong She, Kui-Feng Yang
Summary: This study conducted detailed geochemical, geochronological and isotopic analyses on the Songxian syenite in the Qinling Orogen. The results revealed the magma sources, petrogenesis and geodynamic implications of this alkaline intrusion. The study suggests that the syenite was formed through multiple stages of magmatism, involving the partial melting of the enriched lithospheric mantle and mixing with melts derived from the lower crust.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Yu Li, Wen-Liang Xu, Xiao-Ming Zhang, Jie Tang
Summary: This study presents new zircon U-Pb-Hf and whole-rock geochemical data for Jurassic intrusive rocks in the Yanbian area of NE China, providing insights into the subduction history of the Paleo-Pacific Plate. The study reveals three stages of Jurassic magmatism in the area, indicating the presence of an active continental margin related to the initial subduction of the Paleo-Pacific Plate beneath the Eurasian continent.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Lina Ai, Shengfa Liu, Shuai Cong, Hui Zhang, Peng Cao, Kaikai Wu, Wenxing Ye, Che Abd Rahim Mohamed, Xuefa Shi
Summary: This study investigates the depositional configurations and sedimentary environments of the Malacca Strait through analyzing grain size characteristics and hydrographic data. The results show that residual sediments are concentrated in the central region, while modern terrigenous sediments are distributed along the coast of Malaysia and the northern region. The sedimentary environments are influenced by seasonal variations and hydrodynamic conditions.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Liang Xiao, Jia-qi Liang, Li-yan Guo, De-shuang Ji, Man Yuan, Xiang-chuan Li, Nan Sun, Zuo-chen Li
Summary: This study investigates the correlation between stable carbon isotopes of plant fossils and CO2 levels in the Jurassic period. The results suggest a weak correlation between the two, indicating caution is needed when using stable carbon isotopes to reconstruct high paleo-CO2 concentrations.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Xuli Yang, Feng Huang, Jifeng Xu, Xijun Liu, Liying Zhang, Zhao Zhang, Benyan Xu, Man Zhang, Yunchuan Zeng, Qian Liu, Mingda Lv
Summary: The extensively developed Early Cretaceous intermediate-felsic rocks in the northern North China Craton provide valuable insights into the nature of Paleo-Pacific subduction and associated geodynamic processes. Geochemical and geochronological analyses of trachyandesites and rhyolites from the eastern Hebei, northern NCC suggest that the trachyandesites likely originated from enriched mafic lower crust and the rhyolites are derived from the trachyandesitic magmas through fractional crystallization. The migration direction change of these rocks is believed to be primarily attributed to slab rollback of the subducting Paleo-Pacific Plate.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Wei Liu, Ping Gao, Xianming Xiao, Yanming Zhao, Yijie Xing, Jinku Li
Summary: The organic-rich shales of the Shuijingtuo Formation in China are an important target for shale gas exploration. The upper section of the formation, primarily consisting of limestone, silty shale, and black shale, has been rarely studied but recently showed promising results for shale gas exploration. Geochemical investigations of the upper section shale deposits revealed that the organic matter enrichment mechanism underwent dynamic changes due to relative sea-level changes and episodic upwelling activities.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geosciences, Multidisciplinary
Xin Wang, Chen Zhang, Zixin Xue, Qianyou Wang, Zhenxue Jiang, Kun Zhang, Xiangye Kong
Summary: This study analyzed the heterogeneity of gas compositions and the effects of magmatism on gas accumulation in shale gas exploration in the Yangtze plate. The results showed that magmatism caused the development of micro-fractures in shale reservoirs and accelerated the thermal evolution rate of organic matter. The impact of magmatism on shale gas accumulation varied in different regions, either favoring or compromising efficient gas accumulation in shale reservoirs.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)