Article
Geosciences, Multidisciplinary
Richard M. Gaschnig, Mary F. Horan, Roberta L. Rudnick, Jeffrey D. Vervoort, Christopher M. Fisher
Summary: The diamictites produced by continental glaciations were deposited in several geological periods and continents, with each period showing varying sources and crustal compositions. The study revealed different characteristics and origins for diamictites from different geological time periods and regions.
PRECAMBRIAN RESEARCH
(2022)
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
Geosciences, Multidisciplinary
Binsong Zheng, Chuanlong Mou, Xiuping Wang, Hongde Chen
Summary: By analyzing detrital zircon U-Pb ages, trace element, and Hf isotopic data, the study supports the hypothesis that the South China Block became a part of Pangea during the Late Permian to Middle Triassic.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
Article
Geosciences, Multidisciplinary
He Zhang, Jun He, Yan-Chen Li, Guang-Hui Wu, Hong Cheng, Fukun Chen
Summary: The U-Pb ages and Hf isotopic compositions of detrital zircon, as well as the geochemical characteristics of whole rock, from Precambrian paragneiss in the Foping complex were studied in this research. The results suggest that the paragneiss samples were mainly derived from felsic rocks in a continental arc environment. The U-Pb ages of the detrital zircon show concentrations around two major peaks at -850 Ma and -700 Ma, as well as two minor peaks at -2500 Ma and -2000 Ma, with variable εHf(t) values ranging from -26.0 to +12.4. The Neoproterozoic ages of the detrital zircon grains in the Foping dome are similar to those of Neoproterozoic igneous rocks in South Qinling and the Yangtze Block. This study suggests a crustal growth in the early Neoproterozoic (ca. 1000-900 Ma) in South Qinling, possibly caused by intra-oceanic subduction along the northern margin of the Yangtze Block, followed by reworking of the ancient crust attributed to a tectonic shift from an island-arc setting to a continental arc environment at ca. 900-860 Ma. The extensive formation of igneous rocks in the continental arc provided the main source for the Precambrian paragneisses in the Foping dome.
JOURNAL OF ASIAN EARTH SCIENCES
(2023)
Article
Geography, Physical
Ce Wang, David A. Foster, Ming Su, Yaping Lei, Letian Zeng, Heqi Cui
Summary: The sedimentary evolution in the northern South China Sea during the Holocene is influenced by climate change, sea level rise, and changes in surface circulation. The study reveals that the sediments in the head of the Shenhu submarine canyons primarily come from the Pearl River system and the drainage systems in Taiwan, with no representation from Hainan and Luzon. The study also highlights the reworking of ancient continental crust and the accretion of Cathaysia and Yangtze blocks during the evolution of the South China Craton.
GLOBAL AND PLANETARY CHANGE
(2023)
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
Geochemistry & Geophysics
Junhua Yao, Wei-Guang Zhu, Chusi Li, Zhong-Jie Bai, Yan-Jun Wang, Lei-Luo Xu
Summary: This study investigates the controls on the chemistry of Neoproterozoic arc magmas using zircon trace elements and Hf-O isotopes, as well as whole-rock chemical and Sr-Nd isotope compositions. The results show that both reduced and oxidized magmas can be produced simultaneously in a subduction zone.
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
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
Geology
Qin Ye, Hanjie Wen, Chongguang Luo, Yu Chen, Wenxiu Yu, Yi Cui
Summary: A lithium-rich claystone with great potential for lithium exploration has been discovered in Central Yunnan, China. However, the origin of the claystone is still being debated. Through various analyses, it was found that the age distribution and source of the claystone differ. It is suggested that the weathering products from the Weining Formation may have provided the primary material for the Daoshitou Formation claystone.
ORE GEOLOGY REVIEWS
(2023)
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
Carlos V. A. Ribeiro, Marcos C. C. Sales, Armando L. S. de Oliveira, Ricardo Sallet
Summary: The Serido Belt in the northeast of Brazil is a Neoproterozoic mobile belt related to the Brasiliano/Pan-African Orogeny. The sedimentary provenance of the rocks in the Serido Belt was investigated using geochemistry, isotopes, detrital zircon ages, and trace element analyses. The rocks in the Equador Formation have a cratonic sandstone provenance, while the Jucurutu and Serido formations indicate an increase in intermediate-mafic sources. The geochemical proxies suggest brackish to marine conditions and anoxic to euxinic conditions for the Jucurutu and Serido formations.
GEOSCIENCE FRONTIERS
(2023)
Article
Geosciences, Multidisciplinary
Er-Kun Xue, Wei Wang, Mei-Fu Zhou, Manoj K. Pandit, Si-Fang Huang, Gui-Mei Lu
Summary: The late Neoproterozoic to early Paleozoic strata in the Cathaysia Block of South China show connections with adjacent terranes and orogens in East Gondwana, with significant sediment input from the eastern Indian and western Australia regions. The decrease in early Grenvillian components in late Ediacaran strata can be linked to the Pinjarra Orogeny, which blocked detritus transport from Australia.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2021)
Article
Geology
Renbo Huang, Jiarun Liu, Zhenyu Yang, Aihua Yang, Yongxiang Li, Wenjun Jiao
Summary: The study of directional structures and detrital zircons on the southeastern margin of the Yangtze Block revealed that the paleogeographic landscape of eastern South China can be divided into five paleogeographic domains, suggesting that South China may have been a peripheral component of East Gondwana, with the Cathaysia Block adjacent to India, West Australia, and/or East Antarctica.
SEDIMENTARY GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Xi Wang, Christopher J. Spencer
Summary: Constraining the growth and evolution of the continental crust provides insight into the secular change of tectono-magmatic processes through time. However, previous global compilations of Lu-Hf isotopes of zircon suffer from sample clustering and spatial bias issues. By applying a geographic declustering algorithm, a more representative dataset reveals that the continental crust grew much faster and suggests that continental growth is a feature of pre-plate tectonic magmatic processes.
Article
Geosciences, Multidisciplinary
Zhenhua Xue, Wei Lin, Yang Chu, Michel Faure, Yan Chen, Wenbin Ji, Huaning Qiu
Summary: The Longmenshan Thrust Belt in Eastern Tibet was formed during a Mesozoic orogeny and Cenozoic reworking. Detailed structural analysis reveals that the thrust belt can be divided into a Southeastern Zone and a Northwestern Zone, both of which experienced major tectonic events. Geological data suggests that episodic imbrication of basement slices occurred during the Late Jurassic-Early Cretaceous and Late Cretaceous-earliest Paleocene, leading to the exhumation of amphibolite facies rocks.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geosciences, Multidisciplinary
Zhenhua Xue, Wei Lin, Yang Chu, Wei Wei, Zhentian Feng, Junfeng Zhang
Summary: This study provides a detailed structural analysis of the Bikou Terrane and its adjacent areas, revealing three phases of deformation events and aiding in the reconstruction of the Paleo-Tethyan evolutionary history.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geology
Wei Wang, Peter A. Cawood, Christopher J. Spencer, Manoj K. Pandit, Jun-Hong Zhao, Xiao-Ping Xia, Jian-Ping Zheng, Gui-Mei Lu
Summary: This study documents the presence of O-18-depleted magmatism in India, which is similar to magmas reported from Australia, South America, and northern China. The widespread occurrence of low O-18 magmas suggests the emergence of substantial volumes of continental crust, possibly due to high-temperature meteoric water-rock interaction. The timing of this magmatism coincides with the development of subaerial large igneous provinces, a downward shift in isotopic values, and an intermittent increase in atmospheric oxygen, indicating a significant event in Earth's history.
Article
Geosciences, Multidisciplinary
Jun Zhang, Manoj K. Pandit, Wei Terry Chen, Wei Wang
Summary: The geological record in NW India provides vital information for studying the tectonic evolution and Gondwana transition. The Punagarh and Sindreth basins exhibit characteristics of a back-arc basin setting, while the Marwar Supergroup represents sedimentation in a tectonically stable basin. These findings are in agreement with the subduction of the peripheral Rodinia supercontinent and the Gondwana assembly.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Gui-Mei Lu, Christopher J. Spencer, Xin Deng, Yang Tian, Bin Huang, Ying-De Jiang, Wei Wang
Summary: A new suite of amphibolites in the SW Yangtze and three suites of late Mesoproterozoic granites in the same area have been identified. These amphibolites were formed around 1175±5Ma while the granites were emplaced during 1060-1042Ma, exhibiting characteristics of A-type granites. Zircon Hf-O isotopic data revealed two subgroups of granites derived from different partial melting processes.
PRECAMBRIAN RESEARCH
(2022)
Article
Multidisciplinary Sciences
Tingzi Li, Mingming Jiang, Liang Zhao, Weihua Yao, Ling Chen, Yang Chu, Baolu Sun, Yinshuang Ai, Bo Wan, Klaus Gessner, Huaiyu Yuan
Summary: This article investigates the lithospheric architecture and evolution of collisional orogens, revealing contrasting seismic structures between the South China Block and the Cathaysia Block. The study demonstrates the critical roles of ancient tectonic processes in the growth and evolution of the continental lithosphere.
Article
Geochemistry & Geophysics
Bovari Syprien Yomeun, Wei Wang, Jean Pierre Tchouankoue, Michele Sandra Kamguia Kamani, Kevin Igor Azeuda Ndonfack, Si-Fang Huang, Emmanuel Archelaus Afanga Basua, Gui-Mei Lu, Er-Kun Xue
Summary: The study analyzed granitoids and other rocks from the Goa-Mandja area, suggesting they may have formed in a setting related to slab subduction. This area may hold records of the evolution history of the East African Rift System in terms of intrusion and magmatic activity.
Article
Geochemistry & Geophysics
Guang-Yao Xin, Yang Chu, Ben-Xun Su, Wei Lin, Meng-Meng Cui, Xia Liu, Ibrahim Uysal, Ji -Lei Li, Zhen-Tian Feng
Summary: This study investigates the mechanism of subduction initiation in the Neo-Tethys Ocean by analyzing geological, geochemical, and geochronological characteristics of mafic dikes and amphibolites from the Bursa ophiolite in NW Turkey. The results suggest that the subduction of Neo-Tethyan lithosphere that formed the Bursa ophiolite was induced rather than spontaneous.
Article
Geosciences, Multidisciplinary
Li Sun, Wei Wang, Manoj K. Pandit, Guimei Lu, Erkun Xue, Bin Huang, Yang Zhang, Wei Jin, Yang Tian
Summary: The sedimentary sequences in the southwestern Yangtze Block during the late Mesoproterozoic to early Neoproterozoic provide crucial evidence for understanding the tectonic evolution of the Yangtze Block and the reconstruction of the Rodinia supercontinent. The study reveals differences in lithological composition, depositional environment, detrital zircon age distribution, and tectonic setting among the Julin, Huili, and Kunyang groups, indicating possible different locations of the Julin and Huili basins within microcontinents. Detrital zircon data show that the Yangtze Block was geographically positioned externally to the Rodinia supercontinent during that time period.
PRECAMBRIAN RESEARCH
(2022)
Article
Geochemistry & Geophysics
Wei Wang, Christopher Spencer, Manoj K. Pandit, Yuan-Bao Wu, Jun-Hong Zhao, Jian-Ping Zheng, Xiao-Ping Xia, Gui-Mei Lu
Summary: River sand detrital zircons from the Peninsular Indian cratons were analyzed for their U-Pb, Lu-Hf, and O isotopes to understand the crustal evolution of the Indian Shield and its role in supercontinent cycles. The zircon samples exhibit distinct age peaks and isotopic compositions, indicating a discrete evolutionary history for the Indian Shield. The study suggests that the Indian Shield occupied a peripheral paleo-position during the assembly of Precambrian supercontinents, and experienced collision events and subduction systems. The analysis also reveals variations in isotopic signatures and oxygenation levels, suggesting changes in sedimentary reservoirs and the role of continental crust addition during the supercontinent cycle.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2023)
Article
Geochemistry & Geophysics
Yin Wang, Wei Lin, Michel Faure, Vuong Van Nguyen, Lingtong Meng, Yang Chu, Wei Wei, Hoai Luong Thi Thu, Claude Lepvrier, Tich Van Vu, Qiuli Li, Hao Wang, Zechao Chen, Lin Wu, Fei Wang
Summary: The timing and mechanism of the combination between the South China Block and the Indochina Block were investigated, and a hypothesis that the Ailaoshan, Song Ma, and Song Chay belts represent different segments of the same tectonic belt was proposed. Detailed structural data and geochronological results revealed the geological evolution model in this region.
Letter
Geochemistry & Geophysics
Gui-Me Lu, Peter A. Cawood, Christopher J. Spencer, Andrey Bekker, Yi-Gang Xu, Zhuosen Yao, Wei Wang
Summary: By investigating the La/Zr ratio of continental-arc mafic volcanic rocks, this study reveals that rocks related to Gondwana assembly have higher La/Zr ratios compared with those formed during Rodinia assembly. This implies that younger supercontinents have thicker continental arcs, which affect the interaction between rocks and the Earth's surface.
Article
Geosciences, Multidisciplinary
Gui-Mei Lu, Wei Wang, Richard E. Ernst, Hafida El Bilali, Christopher J. Spencer, Yi-Gang Xu, Andrey Bekker
Summary: The delay in eukaryote expansion during the transition between the supercontinents Columbia and Rodina is possibly due to extensive crustal differentiation. This study shows an increase in phosphorus-poor felsic volcanic and plutonic rocks and a low weathering intensity during this transition. The decelerated weathering of these rocks may have limited the flux of bio-essential nutrients to the oceans, leading to low primary productivity and atmospheric oxygen levels, which inhibited biologic radiation during the Columbia-Rodinia supercontinent transition period.
PRECAMBRIAN RESEARCH
(2023)
Article
Geochemistry & Geophysics
Tingzi Li, Mingming Jiang, Liang Zhao, Yang Chu, Weihua Yao, Bo Wan, Ling Chen, Yinshuang Ai, Thomas Bodin, Huaiyu Yuan
Summary: The lithospheric architecture of the South China Block provides key information on the formation and evolution of this region. Through the study of seismic anisotropy, the deformation history of the lithosphere and the origins and deformation processes of different blocks are revealed. These studies are of great significance for understanding the tectonic history of the South China Block.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geosciences, Multidisciplinary
Er-Kun Xue, Wei Wang, David Chew, Manoj K. Pandit, Xin Deng, Yang Tian, Xi-Run Tong, Jun-Hong Zhao
Summary: The study reveals the presence of water-fluxed melting during the Wuyi-Yunkai Orogeny in South China. These water-fluxed melting quartzo-feldspathic migmatites formed during the early Paleozoic and were melted through reactions involving water-saturated quartz, feldspar, biotite, and K-feldspar. The findings highlight the significance of water-fluxed anatexis in the differentiation of the continental crust during orogenesis.