Article
Geochemistry & Geophysics
Yu Jiao, Lian Zhou, Thomas J. Algeo, Jun Shen, Lanping Feng, Yating Hu, Jinhua Liu, Liwei Chi, Minghui Shi
Summary: This study provides insights into the regional arc magmatism linked to volcanism in South China during the Permian-Triassic transition.
Article
Geosciences, Multidisciplinary
Zhengxin Yin, Xingxin Lu, Qiangtai Huang, Hao Zheng, Zhourong Cai, Yuanjun Hua, Chenglei Zhang, Fei Deng, Anyuan Xie
Summary: This paper presents geochronological, geochemical, and isotopic data for the granitoids from Baomei and Chahe in the northern part of Hainan Island. The results provide insights into the tectonic evolution of the region, suggesting that Hainan Island experienced extensional tectonic settings during the late Permian to Middle Triassic, with the formation of A- and I-type granites. These findings shed light on the closure of the Palaeo-Tethys Ocean, collision events between the Indochina and South China blocks, and subsequent post-collisional extension.
GEOLOGICAL JOURNAL
(2022)
Article
Geosciences, Multidisciplinary
Yuzhu Ge, Thomas J. Algeo, Huaguo Wen, Chen Zhang, Yiquan Ma, Chengbo Lian
Summary: The study reveals spatial and temporal variations of marine de-oxygenation during the Permian-Triassic transition in the eastern Paleotethys Ocean, showing shifts from oxygenation to de-oxygenation in different shelf settings. These variations are linked to marine sulfur, nitrogen, and phosphorous cycles, indicating a global shallow-marine de-oxygenation event during the latest Permian mass extinction, potentially caused by volcanic sulfur release from the Siberian Traps Large Igneous Province.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geography, Physical
Tea Kolar-Jurkovsek, Hazim Hrvatovic, Dunja Aljinovic, Galina P. Nestell, Bogdan Jurkovsek, Ferid Skopljak
Summary: This study examined the sedimentology and micropaleontology of the Teoc?ak section in Bosnia and Herzegovina, revealing the presence of Permian and Triassic strata in the region. The findings include insights into the depositional environment, conodont faunas, and proposed conodont biozonation, which contributes significantly to the paleobiogeographic correlation of the Western Tethys region.
GLOBAL AND PLANETARY CHANGE
(2021)
Article
Geography, Physical
Jiachun Li, Zuoyu Sun, Gilles Cuny, Dayong Jiang
Summary: This paper presents a taxonomic study on the diverse chondrichthyan fauna from the Luolou Formation in South China. The study recognizes nine different taxa of sharks, indicating a high diversity and evenness in the shark palaeocommunity. The diverse morphologies of the sharks suggest adaptation to various feeding strategies.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2023)
Article
Geography, Physical
Karol Jewula, Wieslaw Trela, Anna Fijalkowska-Mader
Summary: By studying the Permo-Triassic continental succession in the SE part of the Central European Basin, major steps in paleoenvironmental evolution have been reconstructed, and the importance of extrinsic factors responsible for these changes has been assessed.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2021)
Article
Geography, Physical
Hanxiao Li, Hanxinshuo Dong, Haishui Jiang, Paul B. Wignall, Yanlong Chen, Muhui Zhang, Zhumin Ouyang, Xianlang Wu, Baojin Wu, Zaitian Zhang, Xulong Lai
Summary: This study establishes an integrated timescale for the South Qinling Belt based on conodont biostratigraphy and carbon isotope records. It provides a high-resolution age model for the region and reveals the connection between the South Qinling Belt and the Northern Yangtze Platform.
PALAEOGEOGRAPHY PALAEOCLIMATOLOGY PALAEOECOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Juan Hu, Xiaochun Liu, Mengmeng Xia, Longyao Chen, Jianen Han, Daogong Hu
Summary: This study presents a petrological and geochronological analysis of the Mulantou Metamorphic Complex in Hainan Island, China, which provides evidence for Permian-Triassic tectono-thermal events. The results indicate a peak metamorphic condition of 720-770°C and 4.4-5.8 kbar, with metamorphism occurring at 250-235 Ma. Integration of published data suggests that the Triassic metamorphism of the Mulantou Metamorphic Complex resulted from the collision between the South China and Indochina blocks after closure of the Paleo-Tethys.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Zhen Xu, Jason Hilton, Jianxin Yu, Paul B. Wignall, Hongfu Yin, Qing Xue, Weiju Ran, Hui Li, Jun Shen, Fansong Meng
Summary: This study reviews the changes in plant species richness and abundance in South China from the End Permian to Middle Triassic, and examines the co-evolutionary relationship between plants and the environment during this critical period. The study identified four phases of plant evolution, with the End Permian Plant Crisis being a significant event that marked a decline in species richness and plant abundance.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Qianwen Huang, Franz Neubauer, Yongjiang Liu, Johann Genser, Qingbin Guan, Ruihong Chang, Sihua Yuan, Shengyao Yu
Summary: This study reports the discovery of Middle Triassic granite in the Austroalpine basement and reveals its relationship with the subduction of the Paleo-Tethys Ocean. The findings suggest that these granitic rocks were formed in a back-arc setting, providing insights into the geological evolution of the region.
Article
Geochemistry & Geophysics
Vandi Dlama Kamaunji, Lian-Xun Wang, Chang-Qian Ma, Jing Liu, Yu-Xiang Zhu
Summary: The Permian-Triassic granitoids in the East Kunlun Orogen are of high-K calc-alkaline, weakly peraluminous I-type granite. The formation of these syenogranites is associated with asthenospheric upwelling, lower crust delamination, and subsequent continental rifting.
Article
Geology
Chongwen Xu, Xu Zhao, Jan Marten Huizenga, Junhao Wei, Hongzhi Zhou, Fenglin Wang, Xinming Zhang
Summary: This study focuses on the petrological and geochemical characteristics of Permian-Triassic granitoids from the Nagengkangqieer region in the East Kunlun Orogenic Belt. The Late Permian granodiorite was derived from a mixing source of mafic lower crust and mantle materials, while the Middle Triassic granites were derived from partial melting of the lower continental crust. The closure of the Paleo-Tethys Ocean occurred during the Middle Triassic. The contribution of magmatism to continental crustal growth was relatively small during Late Permian subduction, with crustal reworking dominating regional magmatism.
INTERNATIONAL GEOLOGY REVIEW
(2023)
Article
Geology
Qiu-Huan Li, Kai-Jun Zhang, Li-Long Yan, Xin Jin
Summary: This study reports the geological characteristics of magmatic rocks in the Chanv area of the southernmost margin of the western Lhasa block in western China, offering insights into the contrasting features of late Permian and late Triassic magmatic rocks through geochemical, geochronological, and Hf isotopic analyses. The data suggests a switch in tectonic environment from post-break-up to arc-related setting, providing evidence for the initiation of Neo-Tethys subduction between 255 Ma and 214 Ma.
INTERNATIONAL GEOLOGY REVIEW
(2021)
Article
Geosciences, Multidisciplinary
Chong Guan, Maodu Yan, Weilin Zhang, Dawen Zhang, Qiang Fu, Liang Yu, Wanlong Xu, Jinbo Zan, Bingshuai Li, Tao Zhang, Miaomiao Shen
Summary: Through a study of the paleomagnetic and zircon U-Pb geochronological data of the Gadikao Formation volcanic rocks in the Eastern Qiangtang Terrane, this research sheds light on the tectonic evolution of the region. The findings suggest a continuous northward drift of the EQT during the 300-200 Ma period, and the probable closure of the Paleo-Tethys Ocean around 232-220 Ma in the Qamdo region.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Review
Environmental Sciences
Jacopo Dal Corso, Haijun Song, Sara Callegaro, Daoliang Chu, Yadong Sun, Jason Hilton, Stephen E. Grasby, Michael M. Joachimski, Paul B. Wignall
Summary: This review critically evaluates the geological evidence and discusses the current hypotheses surrounding the kill mechanisms of the Permian-Triassic mass extinction, including the different response times of terrestrial and marine ecosystems to the Siberian Traps eruptions and the causal relations between volcanism, environmental perturbations, and ecosystem collapse.
NATURE REVIEWS EARTH & ENVIRONMENT
(2022)
Article
Geosciences, Multidisciplinary
M. Steinthorsdottir, H. K. Coxall, A. M. de Boer, M. Huber, N. Barbolini, C. D. Bradshaw, N. J. Burls, S. J. Feakins, E. Gasson, J. Henderiks, A. E. Holbourn, S. Kiel, M. J. Kohn, G. Knorr, W. M. Kurschner, C. H. Lear, D. Liebrand, D. J. Lunt, T. Mors, P. N. Pearson, M. J. Pound, H. Stoll, C. A. E. Stromberg
Summary: The Miocene epoch was a period of global warmth with dynamic climate changes. Despite efforts to reconcile Miocene conditions with climate models, discrepancies remain. Research is ongoing to improve understanding of Miocene climate, ocean circulation, biogeochemical cycling, ice sheet dynamics, and biotic adaptation through new data integration.
PALEOCEANOGRAPHY AND PALEOCLIMATOLOGY
(2021)
Editorial Material
Geography, Physical
Y. D. Sun, S. Richoz, W. M. Kurschner
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Geosciences, Multidisciplinary
Stephen Ajuaba, Reinhard F. Sachsenhofer, Achim Bechtel, Francesca Galasso, Doris Gross, David Misch, Elke Schneebeli-Hermann
Summary: The Toarcian oceanic anoxic event in the Southwest German Basin resulted in the accumulation of organic matter-rich sediments. Analysis of carbon isotope records and geochemical indicators revealed the presence of photic zone anoxia and enhanced activity of diazotrophic cyanobacteria during the event. Oxygen-depleted conditions persisted even after the event, albeit with reduced intensity.
INTERNATIONAL JOURNAL OF EARTH SCIENCES
(2022)
Article
Paleontology
Pauline Guenser, Samuel Ginot, Gilles Escarguel, Nicolas Goudemand
Summary: Taxonomy is the first step in biodiversity studies, but the accuracy of taxa delineation can be influenced by sampling effort, especially in the presence of transitional forms. This study highlights the complexity of taxonomic work and emphasizes the importance of extensively illustrating, measuring, and comparing material to better understand morphological variability and delineate taxa.
Article
Plant Sciences
Francesca Galasso, Susanne Feist-Burkhardt, Elke Schneebeli-Hermann
Summary: The Toarcian Oceanic Anoxic Event (T-OAE) lasted for several hundred thousand years and was characterized by marine anoxia. Abiotic factors such as global warming, changes in weathering intensity, and sea-level change were associated with significant changes in carbon cycling. Comprehensive palynological data from the T-OAE section in Dormettingen, Germany, revealed that terrestrial ecosystems responded early to abiotic disturbances even before the T-OAE.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Plant Sciences
F. Galasso, S. Feist-Burkhardt, E. Schneebeli-Hermann
Summary: The discovery of possible teratological features (i.e. unseparated spore tetrads and darkened sporomorphs) in the deposits of the Posidonia Shale Formation suggests environmental changes prior to the Toarcian Oceanic Anoxic Event (T-OAE).
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Plant Sciences
Morris Mendelin, Elke Schneebeli-Hermann, Evelyn Kustatscher, Hendrik Nowak, Christian Verard, Hugo Bucher
Summary: This study describes a reproductive organ of a lycopsid plant found in the Koipato Group in the southern Humboldt Range, Nevada. The findings contribute to a better understanding of the global distribution and evolution of this genus during the Early Triassic, as well as filling a major paleogeographic gap in North America.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Geography, Physical
Francesca Galasso, Hugo Bucher, Elke Schneebeli-Hermann
Summary: Over the past 500 million years, Earth has experienced major extinction events, including the Permian/Triassic boundary extinction event. The Early Triassic following the extinction event was marked by significant biological and environmental changes. This study examines malformations of spores and pollen grains during the Early Triassic, suggesting stressful conditions for plants. The malformations could be attributed to volcanic gases, acid rains, soil acidification, heavy metal pollution, or climatic extremes. Teratology is shown to be a useful tool for assessing ecological disturbance in the plant kingdom.
GLOBAL AND PLANETARY CHANGE
(2022)
Article
Biology
Louise Souquet, Pauline Guenser, Catherine Girard, Michele Mazza, Manuel Rigo, Nicolas Goudemand
Summary: This study quantifies the morphology of fossilized teeth during two distinct time periods and finds that during crisis events, the evolution of teeth deviates from the common evolutionary line of least resistance and instead follows heterochrony-like trajectories that appear to be driven by ocean temperature.
PROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCES
(2022)
Article
Plant Sciences
Liqin Li, Wolfram M. Kurschner, Ning Lu, Hongyu Chen, Pengcheng An, Yongdong Wang
Summary: This study conducted a palynological study in the northwestern Sichuan Basin, Southwest China, and revealed the impact of a humid Carnian Pluvial Episode on vegetation changes in the region during the Late Triassic period. The results correlate well with observations from North China and the western Tethys, supporting the worldwide impact of a humid climate.
REVIEW OF PALAEOBOTANY AND PALYNOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Ning Lu, Yongdong Wang, Yuanyuan Xu, Liqin Li, Xiaoping Xie, Mihai Emilian Popa, Hongyu Chen, Micha Ruhl, Wolfram Michael Kuerschner
Summary: Through studying the sedimentary system, floral successions, and major geological events of the Xujiahe Formation in the eastern Sichuan Basin, China, we have found that the Late Triassic witnessed an oscillating fluvial-lacustrine depositional system and fluctuating climatic conditions, which ultimately led to the collapse of the ecosystem in response to the Late Triassic Central Atlantic Magmatic Province event.
GEOLOGICAL JOURNAL
(2023)
Article
Multidisciplinary Sciences
Roland Zimm, Fidji Berio, Melanie Debiais-Thibaud, Nicolas Goudemand
Summary: Developmental complexity resulting from the interplay between genetic and biomechanic factors shapes the ways in which genotypes and phenotypes change in evolution. In this study, we investigate the developmental factors underlying typical tooth shape transitions by studying tooth diversity in sharks. Using a realistic mathematical model of odontogenesis, we successfully reproduce key features of tooth development and real tooth shape variation in small-spotted catsharks through in vivo experiments. Interestingly, we find that developmental transitions between tooth shapes tend to be highly degenerate and asymmetrically dependent on the direction of transition. These findings contribute to our understanding of how developmental changes drive adaptive phenotypic change and trait convergence in complex, highly diverse structures.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Multidisciplinary Sciences
Francesca Galasso, Ulrich Heimhofer, Elke Schneebeli-Hermann
Summary: Based on the analysis of pollen and spores from fossil plants in Cassis, France, it is found that plant reproduction was unaffected during the Cenomanian/Turonian boundary interval.
SCIENTIFIC REPORTS
(2023)
Article
Paleontology
Marc Leu, Hugo Bucher, Aymon Baud, Torsten Vennemann, Zoneibe Luz, Michael Hautmann, Nicolas Goudemand
Summary: Based on the study of two different regions in Oman, we found that the structure of the early Spathian boundary is complex. However, through the analysis of mollusk fossils and carbon isotope records, we have successfully determined the position of the Spathian boundary.
PAPERS IN PALAEONTOLOGY
(2023)
Article
Plant Sciences
Julia Gravendyck, Clement Coiffard, Julien B. Bachelier, Wolfram Kuerschner
Summary: This study examines the taxonomic framework of Cerebropollenites thiergartii and related taxa, addressing the confusion and inconsistencies in their classification. It proposes a series of nomenclatural novelties to unify previous disjunct use of different genus names. These findings have significant implications for the stratigraphic value of these taxa in studying the Triassic-Jurassic transition.
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)
