Article
Geosciences, Multidisciplinary
Haihua Zhang, Liang Qiu, Dan-Ping Yan, Zifu Zhao, Keda Cai, Jian Zhang, Shuwang Chen, Yongfei Li, Ying Song, Yuejuan Zheng, Shouliang Sun, Fanhao Gong, Shahnawaz Ariser
Summary: This study presents seismic reflection profiles and geological, paleontological, and geochemical data from borehole cores in the Songliao Basin, China, to determine the timing, provenance, and tectonic background of the Linxi Formation. The data provides evidence for the closure of the eastern Paleo-Asian Ocean and associated orogenesis.
Article
Geosciences, Multidisciplinary
Wanli Gao, Zongxiu Wang, Leilei Li
Summary: The GTS granites in the Xing'an Block have been studied for their geochronological and geochemical characteristics, providing insights into the subduction processes of the Palaeo-Asian Ocean in the eastern Central Asian Orogenic Belt. The results indicate two stages of emplacement with different geochemical signatures, suggesting a change from a subduction setting in the Early Carboniferous to an extension setting in the Late Carboniferous, likely caused by the subduction slab break-off of the Palaeo-Asian Ocean.
GEOLOGICAL JOURNAL
(2021)
Article
Geosciences, Multidisciplinary
Hou-Tian Xin, Jian Tian, Xue-Jian Teng, Li-Xin Sun, Guo-Zhen Zhang, Yong Zhang, Bang-Fang Ren
Summary: The Baiyunshan ophiolitic melange in the central Beishan orogenic belt is characterized by block-in-matrix structure, with mainly ultramafic-mafic rocks such as pyroxenites, dunites, and gabbros. Zircon U-Pb dating suggests an emplacement age of 424.2 +/- 3.7 Ma for the gabbros, which exhibit geochemical features of supra-subduction zone-type ophiolites. The Baiyunshan Formation to the north of the ophiolitic melange consists of metamorphosed lithic sandstones with dispersed basalt blocks and detrital zircons with ages ranging from 521 to 464 Ma.
JOURNAL OF EARTH SCIENCE
(2023)
Review
Geosciences, Multidisciplinary
Alexandra Guy, K. Schulmann, I. Soejono, N. Holzrichter, O. Lexa, M. Munschy
Summary: By integrating potential field analysis with geological and geochemical data, new insights into the crustal structure and evolution of the Mongolian collage are gained. The inconsistency between geologically defined terranes and geophysical domains in the southwestern part of the Mongolian collage is demonstrated by magnetic and gravity data. The homogeneous lower crust composed of felsic to intermediate juvenile material beneath a geophysically heterogeneous upper crust is interpreted as a result of a trench-directed lower crustal emplacement of an arc type crust underplating deformed Paleozoic oceanic crust.
Article
Geosciences, Multidisciplinary
Zhiwei Song, Chenyue Liang, Franz Neubauer, M. Santosh, Yongjiang Liu, Changqing Zheng, Long Chen, Xiaojing Liu
Summary: This comprehensive study on the Keluo Complex in the northern Da Hinggan Mountains provides new insights into the tectonic history of the region. The Keluo Complex underwent deformation and formation of deformed rocks during the Early Carboniferous to earliest Permian period, intrusion of Early Mesozoic granitic intrusions, and later magmatism, metamorphism, and deformation during the Late Jurassic and late Early Cretaceous. The study reveals the importance of subduction and continental collision processes in shaping the geological evolution of the Da Hinggan Mountains.
Article
Geochemistry & Geophysics
Sergey Mikhailovich Zhmodik, Mikhail Mikhailovich Buslov, Bulat Batuevich Damdinov, Anatoli Georgievich Mironov, Valentin Borisovich Khubanov, Molon Gimitovich Buyantuyev, Ludmila Borisovna Damdinova, Evgeniya Vladimirovna Airiyants, Olga Nikolaevna Kiseleva, Dmitriy Konstantinovich Belyanin
Summary: The Yehe-Shigna ophiolite massif is part of the Belsk-Dugda ophiolite belt, located in the Tuva-Mongolian microcontinent in the Central Asian orogenic belt. The study findings suggest that the massif was formed around 810-750 million years ago in the back-arc basin of the Shishkhid intraoceanic island arc. The research also indicates the presence of gold-telluride deposits in the ophiolite thrust zones, which may be found in other similar ophiolites derived from the Gondwana supercontinent.
Article
Geosciences, Multidisciplinary
WenBing Deng, ZhaoGang Shao, HaiJing Xu, XuanHua Chen
Summary: Through an integrated study of whole-rock geochemistry, zircon U-Pb geochronology, and zircon-Hf isotopes, this research reveals the important geological evolutionary history of the northern Alxa area. The Early Permian igneous rocks in this area are peraluminous, (high-potassium) calc-alkaline I-type granites. The zircon dating results suggest that these rocks were formed during the Early Permian (291-285 Ma). The geochemical and isotopic characteristics of these rocks provide evidence for a crustal thinning event and increased input of mantle materials in the northern Alxa area, possibly due to slab rollback of the Paleozoic Asian Ocean.
GEOLOGICAL JOURNAL
(2023)
Article
Geology
Qian W. L. Zhang, Yi-Chao Chen, Meng-Yan Shi, Zhen M. G. Li, Jia-Hui Liu, Chun-Ming Wu
Summary: The study of the Dunhuang Orogenic Belt (DOB) in Central Asia reveals Permian-Triassic magmatic and thermal records that possibly lasted until the Middle Triassic, indicating a final subduction of the Paleo-Asia Ocean (PAO) in the DOB. The magmatic rocks show continental arc-related geochemical features and the zircon ages suggest a melting of ancient crustal materials. The high heat flow setting during this period was possibly triggered by arc activities.
INTERNATIONAL GEOLOGY REVIEW
(2022)
Article
Geology
Xianfeng Zha, Yunpeng Dong, Dengfeng He, Meng Li, Xiaofeng Gao, Xiaoming Liu, Chaobin Hu, Lili Xu
Summary: The Qimantagh back arc basin underwent complex tectonic evolution processes, including opening, subduction, and closure. The results of this study indicate that the closure of the back arc basin led to a crustal thickening event around 420-410 million years ago.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geosciences, Multidisciplinary
Pengfei Li, Min Sun, Chao Yuan, Fred Jourdan, Wanwan Hu, Yingde Jiang
Summary: This study investigates the late Paleozoic tectonic evolution of the Chinese Altai and Tianshan orogens, providing new geochronological data to link polyphase deformation with orogenic processes. The results suggest that orogen-parallel extension and transpressional tectonics played a significant role in the late Paleozoic arc/continental amalgamation of the western CAOB.
AMERICAN JOURNAL OF SCIENCE
(2021)
Article
Geochemistry & Geophysics
Xing Cui, Min Sun, Guochun Zhao, Yunying Zhang
Summary: Distinct types of mafic rocks in the southern Chinese Altai with different ages and geochemical characteristics suggest their parental magmas were hydrous and likely originated from partial melting of subduction-metasomatized sub-continental lithospheric mantle, while the involvement of hot asthenosphere was also indicated. A slab break-off scenario is proposed to explain the genesis of mafic magmas in the region.
Article
Geosciences, Multidisciplinary
Yi Shi, Shaoshan Shi, Zhenghong Liu, Li Wang, Jin Liu, Jingsheng Chen, Fan Yang, Chao Zhang, Bin Li, Lidong Zhang
Summary: The study on Palaeozoic ophiolites in the southeastern Central Asian Orogenic Belt has significant implications for understanding the formation and evolution of the Palaeo-Asian Ocean. The Faku ophiolite in Northeast China displays characteristics of a back-arc tectonic setting, while the granite rocks formed in a syn-collisional orogenic environment. The provenance of sandstones from marine sediment suggests post-collisional orogeny and uplift occurred after the Early Triassic.
Review
Geosciences, Multidisciplinary
Yunpeng Dong, Shengsi Sun, M. Santosh, Bo Hui, Jiaopeng Sun, Feifei Zhang, Bin Cheng, Zhao Yang, Xiaohui Shi, Dengfeng He, Lei Yang, Chao Cheng, Xiaoming Liu, Xiaohu Zhou, Wei Wang, Nan Qi
Summary: The East Asian continent has a complex geological and tectonic history that shaped the formation and evolution of the China continent. The Central China Orogenic Belt and the Helan-Chuandian Orogenic Belt, known as the Cross Orogenic Belts, played a crucial role in controlling the geological, geographical, ecological, environmental, economic, and cultural division of the China continent. The uplift of these belts influenced the climate, environment, economy, and culture in different regions of China.
Article
Geology
Li Tang, Pei-Lin Chen, M. Santosh, Shou-Ting Zhang, Bo Xu, Li-Min Wan, Sung Won Kim, Yuan-Ming Sheng, Xin-Kai Hu
Summary: This study investigates the genetic relationship between porphyry stocks and breccia pipe-hosted gold mineralization in the Qiyugou deposit through petrography, geochemistry, geochronology and isotopic analysis. The results indicate that the magmatic-hydrothermal activity in the Qiyugou deposit lasted from 136.4 Ma to 128.6 Ma.
ORE GEOLOGY REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Xiaochen Zhao, Chiyang Liu, Jianqiang Wang, Yazhuo Niu, Lei Huang, Shaohua Zhang, Fangpeng Du, Heng Peng, Yingtao Chen, Tao Peng, Zhengzheng Mao
Summary: This study focuses on the characteristics, petrogenesis, and tectonic regimes during the late Paleozoic - early Mesozoic period in the northern Alxa region. The analysis of whole-rock compositions and zircon U-Pb and Lu-Hf isotopic data suggests that the I-type and A-type granitic plutons in the area were mainly derived from juvenile crustal materials. The findings provide evidence that the Palaeo-Asian Ocean in the central segment of the Central Asian Orogenic Belt closed before the Middle Triassic.
GEOLOGICAL MAGAZINE
(2023)
Article
Geosciences, Multidisciplinary
Bin Zhang, Jiaqi Liu, Wen Chen, Zhiliang Zhang, Li Yang, Lei Zhang, Zeyang Zhu, Chunqing Sun, Zhihao Sun
Summary: The eastern Tibetan Plateau is a region with unique topography and active tectonics, making it crucial for studying geodynamics and lithosphere-atmosphere interaction. By integrating new and reported thermochronological data, as well as paleo-crustal thickness reconstruction, this study sheds light on the tectonic deformation, climate-tectonic coupling, and geodynamics of the area.
Article
Geosciences, Multidisciplinary
Zhenhua Tian, Shangwen Zhou, Songtao Wu, Sai Xu, Junping Zhou, Jianchao Cai
Summary: This paper presents a modified method for calculating the lost gas content of shale by analyzing the coring and on-site desorption processes. The method accurately depicts the loss characteristics of free and adsorbed gas and identifies parameters that influence the calculation of in-situ shale gas content. The results demonstrate that the method shows satisfactory applicability in gas loss curve prediction and in-situ gas content estimation.
Article
Geosciences, Multidisciplinary
Pengcheng Li, Jaffar Abbas, Daniel Balsalobre-Lorente, Qingren Wang, Qianxiao Zhang, Syed Ale Raza Shah
Summary: This study explores the factors contributing to sustainability in Pakistan from 1974 to 2018 and finds that emissions from industrial and agriculture sectors have significantly decreased, while the financial sector has not effectively reduced environmental pressure. Therefore, Pakistan needs to adjust its economic policies and ensure the green allocation of financial resources.
Article
Geosciences, Multidisciplinary
Shi Zhou, Ting Zhou, Duo Guan, Yong Yao, Huimin Sun, Ahmed Ali Mosa, Yajie Zuo, Xianqiang Yin
Summary: Graphitic carbon nitride (g-C3N4) has been widely used due to its excellent optical properties and physicochemical stability. The risk of g-C3N4 transport in the environment has been overlooked, but this study investigated its transport behavior in various media. The results showed that flow rate and ionic strength influenced the transport, and the presence of lead (Pb) affected the outflow of g-C3N4. The unique structure of g-C3N4 particles allowed them to deposit in certain media and act as carriers for Pb release.
Article
Geosciences, Multidisciplinary
Xiaolong Qiao, Muntasir Murshed, Mohammad Mahtab Alam, Narasingha Das, Kurshid Khudoykulov, Salman Tariq
Summary: This study examines how macroeconomic factors influence India's carbon emission intensity levels and confirms the impact of factors such as foreign remittance receipts, energy consumption, urbanization, and technological progress. The findings provide policy recommendations for India's carbon emission reduction targets.
Article
Geosciences, Multidisciplinary
Wei Liu, Bo Wan
Summary: Magmatic-hydrothermal systems play a crucial role in transporting materials and potentially affecting Earth's long-term environment. This study investigates the duration of prograde metamorphism induced by fluid infiltration and the amount of carbon released by skarn ore deposits. The findings reveal that skarn ore deposits can efficiently decarbonize CO2 at a high rate, surpassing volcanism in different tectonic settings. The CO2 flux of skarn deposits increases over time and reaches a maximum value at the J/K boundary, providing an important previously unquantified source of outgassing in the subduction zone.
Article
Geosciences, Multidisciplinary
Haikuan Nie, Pei Li, Qing Chen, Zhijun Jin, Quanyou Liu, Wei Dang, Qian Chen, Jianghui Ding, Changbo Zhai
Summary: This study investigates the shale quality and shale gas potential in the upper Ordovician to lower Silurian formations in the Sichuan Basin of southern China. The distribution and characteristics of organic-rich shale are analyzed, aiding in the assessment of shale gas potential and identification of sweet spots.
Article
Geosciences, Multidisciplinary
Najia Saqib, Shujaat Abbas, Ilhan Ozturk, Muntasir Murshed, Malgorzata Tarczynska-Luniewska, Mohammad Mahtab Alam, Waldemar Tarczynski
Summary: This study examines the impact of economic growth, financial development, eco-friendly ICT, renewable energy, and human capital on lowering carbon footprint in the world's top polluting economies from 1993 to 2020. The findings suggest that eco-friendly ICT has the potential to effectively alleviate pollution, and financial development, renewable energy, and environmental technology are proposed as potential solutions for reducing carbon emissions.
Article
Geosciences, Multidisciplinary
Hikmat Salam, Syed Ali Turab, Asghar Ali, M. Qasim Jan, Norasiah Sulaiman, Mohd Basril Iswadi Basori
Summary: The Kahi melange complex in NW Pakistan is an important record of the tectonic evolution between the Indian plate and the Afghan block, consisting of highly dismembered ophiolitic and sedimentary units.
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.
Article
Geosciences, Multidisciplinary
Hadi Shafaii Moghadam, Qiu-Li Li, William L. Griffin, Xian-Hua Li, Orhan Karsli, Christopher J. Spencer, Jose F. Santos, Maria Kirchenbaur, Sobhi Nasir, Suzanne Y. O'Reilly
Summary: Understanding the crustal growth, reworking, and geodynamics of the northern continental margin of Gondwana during the Ediacaran to Silurian times is crucial for the paleogeographic reconstruction of Gondwana. This study uses various analytical methods to evaluate the magmatic history of this region and obtain relevant detrital zircon data. The results provide valuable insights into the crustal evolution and tectonic activities in the northern Gondwana region.
Article
Geosciences, Multidisciplinary
Laura Petrescu, Felix Borleanu, Emanuel Kaestle, Randell Stephenson, Anica Placinta, Oleksandr Ivanovich Liashchuk
Summary: This study investigates the seismic structure of the Eastern European lithosphere and the transition from Precambrian to Phanerozoic Europe. The results show that the crust thickens across the Trans European Suture Zone boundary and the mantle is seismically faster beneath younger terranes. The Precambrian building blocks exhibit contrasting seismic fabrics, with the Baltic orogens characterized by uniform crust and the Sarmatia region showing alternating high and low velocity layers.
Article
Geosciences, Multidisciplinary
Dongya Zou, Hongfu Zhang
Summary: This study analyzes the U-Pb-Hf-O isotopes of zircons in felsic granulite xenoliths from the Fuxin late Cretaceous basalts in the North China Craton to evaluate the role of magma underplating in modifying the Archean lower crust. The results show that long-lived magma underplating occurred beneath the Fuxin region during the Mesozoic, with underplated magmas originating from the lithospheric mantle and later from the depleted asthenospheric mantle. This study concludes that magma underplating not only provided heat for remelting, but also added exotic material and weakened the lower crust, leading to its destruction.
Article
Geosciences, Multidisciplinary
Yu Han, Yingchang Cao, Chao Liang, Keyu Liu, Fang Hao
Summary: A paleoclimate reconstruction based on high-resolution records from lacustrine shale in the Bohai Bay Basin reveals a shift in orbital variability and a humidification event at -41.9 Ma in East Asia. The intensification of the East Asian monsoons at this time was likely a response to the elevated atmospheric pCO2 during the concurrent global warming.
Article
Geosciences, Multidisciplinary
Francesca Innocenzi, Sara Ronca, Stephen Foley, Samuele Agostini, Michele Lustrino
Summary: This study investigates two volcanic provinces in the western branch of the East African Rift and finds that the volcanic products show wide variability in chemical and mineralogical characteristics. Petrographic and geochemical analysis reveals enriched and heterogeneous sub-lithospheric mantle sources. The differences in isotopic features between the two volcanic provinces may indicate changes in the composition, mineralogy, and depth of melting in the lithospheric mantle source.