Article
Multidisciplinary Sciences
Thomas P. Ferrand, Elena F. Manea
Summary: This study investigates the intermediate-depth seismicity in Vrancea, Eastern Romania, and suggests that the destabilization of mantle and crustal minerals may contribute to the observed seismic activity, with a higher correlation found in mantle minerals. The research demonstrates that the seismicity in Vrancea is evidence of the current dehydration of an oceanic slab beneath Romania, supporting the idea of a recent rollback of a W-dipping oceanic slab with limited delamination of the continental Moesian lithosphere.
SCIENTIFIC REPORTS
(2021)
Article
Geosciences, Multidisciplinary
Zeming Zhang, Huixia Ding, Richard M. Palin, Xin Dong, Zuolin Tian, Dongyan Kang, Yuanyuan Jiang, Shengkai Qin, Wentan Li
Summary: The Himalayan orogen is an ideal region for studying active orogenic processes and testing dynamic models of how the crust responds to collisional orogeny. The area has undergone high-pressure and high-temperature metamorphism, as well as partial melting, generating various types of rocks and providing sources for the Himalayan granites.
Article
Geochemistry & Geophysics
Shao-Xiong He, Xiao-Chi Liu, Lei Yang, Jia-Min Wang, Fang-Yang Hu, Fu-Yuan Wu
Summary: The study identified four stages of granitic magmatism in the Lhagoi Kangri dome of the North Himalayan antiform, which provide robust evidence for the anatexis of the lower crust of the Indian plate starting around 42-40 Ma. The Oligocene and Miocene leucogranites are products of muscovite-dehydration melting of metasedimentary rocks, indicating variations in age and isotopic characteristics resulting from the compression-extension evolution of the Himalayan collisional orogenic system.
Article
Geochemistry & Geophysics
Min Ji, Xiao-Ying Gao, Yong-Fei Zheng
Summary: The study of Higher Himalayan metamorphic rocks and leucogranites in the Himalayan orogen provides evidence for the possible sources of felsic magmatism at convergent plate boundaries. The geochemical and geochronological analysis reveals a link between the crustal sources and their melting products during the Oligocene-Miocene period. The gradual change in Nd isotope values in leucogranites indicates a protracted crustal anatexis process from late Oligocene to Miocene, with different crustal sources contributing to the melting products.
Article
Geosciences, Multidisciplinary
Zengqian Hou, Rui Wang, Haijiang Zhang, Yuanchuan Zheng, Sheng Jin, Hans Thybo, Roberto F. Weinberg, Bo Xu, Zhiming Yang, Ao-Wei Hao, Lei Gao, Letian Zhang
Summary: Through joint inversion of surface wave and satellite gravity data, we have revealed the lithospheric architecture of the Himalayan-Tibetan orogen, which hosts abundant Miocene giant to large porphyry copper deposits (PCDs). Our study shows that the subducted Indian continental lithosphere was torn into several pieces with different subduction angles during the Indo-Asia collision, providing channels for asthenospheric upwelling and triggering melting. The process generates melts that ascend and pond at the base of the crust, leading to high heat flow and supply of water for melting of the overlying thick crust and generation of granitoid magmas. The breakdown of sulfides in the lower crust increases the fertility of the magmas. Three key factors, a torn slab subducted at moderate angles, prior Cu enrichment in the lower crust, and trans-lithospheric structures for magma ascent, are essential for the formation of collision-related PCDs.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Guyue Hu, Li'e Gao, Lingsen Zeng, Yike LI
Summary: Tourmaline geochemistry and boron isotopic compositions provide evidence for country rock assimilation during the intrusion of Himalayan leucogranite in the Gyirong-Malashan areas. Different types of tourmaline were identified in the Himalayan orogen, and the characteristics of tourmaline can be used to trace the interaction between leucogranitic veins and metasedimentary country rocks.
ACTA GEOLOGICA SINICA-ENGLISH EDITION
(2022)
Article
Environmental Sciences
Guohui Li, Yuanze Zhou, Ling Bai, Yuan Gao, Yanan Li
Summary: Through seismic observations and velocity models, it has been discovered that a low-viscosity layer atop the mantle transition zone plays a significant role in facilitating slab sinking and recurring intermediate-depth seismicity.
COMMUNICATIONS EARTH & ENVIRONMENT
(2023)
Article
Geochemistry & Geophysics
Min Ji, Xiao-Ying Gao, Yong-Fei Zheng, Bing Gong
Summary: The study examines the anatectic mechanisms in the Himalayan orogen, finding that pressure and temperature control the reaction, while water content mainly affects the solid-phase composition. Dehydration and hydration melting likely occur at different depths in the crust. This research provides important insights into the melting processes in collisional orogens.
Article
Geosciences, Multidisciplinary
Rui Wang, Roberto F. Weinberg, Di-Cheng Zhu, Zeng-Qian Hou, Zhi-Ming Yang
Summary: The Yadong-Gulu Rift is a rift associated with thermal anomalies and crustal melting. It is characterized by a band of high heat flow and highSr/Y granitic magmatism in the Gangdese belt. In the Tethyan and Higher Himalayas, this rift is associated with some of the youngest Miocene Himalayan leucogranites and mantle-derived mafic enclaves and lamprophyre dikes. The prominent tear in the Indian lithosphere, parallel to the rift, is considered to be the source of these tectono-thermal anomalies.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2022)
Article
Geochemistry & Geophysics
Zi-Yue Meng, Xiao-Ying Gao, Ren-Xu Chen, Yong-Fei Zheng, Qiang-Qiang Zhang, Min Ji
Summary: The study found that migmatitic metapelites in the Nyalam Valley share similar age and temperature conditions, and through integrated research of whole-rock geochemistry, mineral chemistry, zircon geochronology, and phase equilibrium modeling, it was discovered that the migmatitic metapelites underwent different types of melting reactions, including dehydration and hydration, which have important implications for understanding the geodynamic mechanism of crustal anatexis.
Article
Geology
Nicole A. Meyer, Thomas Stachel, D. Graham Pearson, Richard A. Stern, Jeffrey W. Harris, Michael J. Walter
Summary: Characterizing compositional heterogeneity in Earth's lower mantle is essential to understanding its dynamics. Three low-nitrogen diamonds from South Africa contain inclusion assemblages that provide insights into diamond formation in an Mg-rich lower-mantle environment. The compositions of the inclusions indicate a melt-depleted meta-harzburgitic environment, with high Mg# and low Ca, Al, and Na. The presence of orthopyroxene and mantle-like delta 18O values suggests the involvement of subducted oceanic slab meta-harzburgite in diamond growth.
Article
Geosciences, Multidisciplinary
Daxiang Gu, Jinjiang Zhang, Chao Lin, Jianlei Zheng, Lin Feng, Yunsong Fan, Baoyou Huang
Summary: This study systematically investigates different magmatic rocks within the Ama Drime Massif, revealing two episodes of magmatism and different mineral evolution processes. The results show that these magmatic rocks originated from the melting of orthogneisses, but underwent different differentiation processes during emplacement.
JOURNAL OF ASIAN EARTH SCIENCES
(2022)
Article
Geochemistry & Geophysics
Zhi-Chao Liu, Fu-Yuan Wu, Wei-Qiang Ji, Xiao-Chi Liu, Jian-Gang Wang
Summary: This study focuses on the geochemical characteristics of leucogranites and their country rocks in the Yadong area of southern Tibet. The research reveals the presence of multiple age populations of monazite and different Nd isotope ratios, indicating a complex history of magmatic processes. The study also identifies abundant inherited monazites in the leucogranites, which share close affinities with the country rocks, suggesting a major influence of country-rock contamination. Additionally, the study highlights the different preservation of xenocrystal monazites and the role of magmatic differentiation in the formation of the Yadong leucogranites.
Article
Geosciences, Multidisciplinary
Chao Lin, Jinjiang Zhang, Xiaoxian Wang, Tianli Huang, Bo Zhang, Yunsong Fan
Summary: The study demonstrates that the Mayum granodiorite porphyries may have originated from partial melting of the subducted Indian thickened ancient mafic lower crust mixed with depleted mid-ocean ridge basalt mantle material input. The middle Miocene Himalayan adakitic rocks formed a belt of similar adakitic rocks in the Northern Himalaya to the south of the Indus-Tsangpo Suture Zone, indicating similarities in petrogenesis and geodynamic settings within the region.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2021)
Article
Geochemistry & Geophysics
Michael Pons, Stephan Sobolev, Sibiao Liu, Derek Neuharth
Summary: The formation of the Central Andes is attributed to the changing geometry of the subducted Nazca plate, resulting in pulses of tectonic shortening and the growth of the Altiplano-Puna Plateau. Mechanically weakening of the South America plate, such as through mantle lithosphere delamination and weakening of foreland sediments, enhances the intensity of the shortening events.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
Zhengfu Guo, Marjorie Wilson, Maoliang Zhang, Zhihui Cheng, Lihong Zhang
JOURNAL OF PETROLOGY
(2015)
Article
Geosciences, Multidisciplinary
Anja Schmidt, Richard A. Skeffington, Thorvaldur Thordarson, Stephen Self, Piers M. Forster, Alexandru Rap, Andy Ridgwell, David Fowler, Marjorie Wilson, Graham W. Mann, Paul B. Wignall, Kenneth S. Carslaw
Editorial Material
Geochemistry & Geophysics
Marjorie Wilson
JOURNAL OF PETROLOGY
(2016)
Editorial Material
Geochemistry & Geophysics
Marjorie Wilson
JOURNAL OF PETROLOGY
(2017)
Editorial Material
Geochemistry & Geophysics
Marjorie Wilson
JOURNAL OF PETROLOGY
(2018)
Article
Geochemistry & Geophysics
Zhengfu Guo, Marjorie Wilson, Maoliang Zhang, Zhihui Cheng, Lihong Zhang
CONTRIBUTIONS TO MINERALOGY AND PETROLOGY
(2013)
Article
Geochemistry & Geophysics
Yaoling Niu, Marjorie Wilson, Emma R. Humphreys, Michael J. O'Hara
JOURNAL OF PETROLOGY
(2011)
Editorial Material
Geochemistry & Geophysics
Yaoling Niu, Marjorie Wilson
JOURNAL OF PETROLOGY
(2011)
Article
Geochemistry & Geophysics
Julia M. Crummy, Ivan P. Savov, Carlos Navarro-Ochoa, Daniel J. Morgan, Marjorie Wilson
JOURNAL OF PETROLOGY
(2014)
Article
Geochemistry & Geophysics
Zhengfu Guo, Marjorie Wilson, Lihong Zhang, Maoliang Zhang, Zhihui Cheng, Jiaqi Liu
Article
Multidisciplinary Sciences
Anja Schmidt, Bart Ostro, Kenneth S. Carslaw, Marjorie Wilson, Thorvaldur Thordarson, Graham W. Mann, Adrian J. Simmons
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2011)
Article
Multidisciplinary Sciences
Zhengfu Guo, Marjorie Wilson, Donald B. Dingwell, Jiaqi Liu
Summary: By analyzing magmatic activity in Tibet, researchers have suggested that the India-Asia collision was the primary driver of atmospheric CO2 variations during the Cenozoic era.
NATURE COMMUNICATIONS
(2021)
Article
Geosciences, Multidisciplinary
Yaoling Niu, Marjorie Wilson, Emma R. Humphreys, Michael J. O'Hara
Article
Environmental Sciences
A. Schmidt, K. S. Carslaw, G. W. Mann, A. Rap, K. J. Pringle, D. V. Spracklen, M. Wilson, P. M. Forster
ATMOSPHERIC CHEMISTRY AND PHYSICS
(2012)
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.