Article
Geosciences, Multidisciplinary
Catherine Girard, Raimund Feist, Angelo Mossoni, Jean-Jacques Cornee, Pierre Camps, Anne-Lise Charruault, Carlo Corradini
Summary: Large-scale magnetic susceptibility variations in ancient sediments are interpreted as related to sea-level and climate changes affecting the erosional regime and detrital input. Comparison of MS records in Avalonia and Gondwana regions during the Famennian revealed striking dissimilarities, indicating the existence of an existing remnant oceanic barrier during early Famennian times. However, uniformity in MS values was observed after the drop in MS values in North Gondwana, suggesting the disappearance of oceanic barriers during the early middle Famennian T-R fluctuations of the sea-level.
Article
Geochemistry & Geophysics
Yuejun Wang, Yuzhi Zhang, Xin Qian, Yang Wang, Peter A. Cawood, Chengshi Gan, Vongpaseuth Senebouttalath
Summary: The study presents the general geology of northeastern Indochina and provides new geochronological and geochemical data regarding its early Paleozoic tectonics. The results show early Paleozoic igneous activity in the area, divisible into four geochemical groups, and the detrital-zircon age-spectra indicate geographical proximity to East Gondwana. An accretionary assemblage model is proposed for the early Paleozoic tectonic pattern of SW Indochina with Yangtze fragments, forming part of the North Indo-Australie Orogen.
Article
Geosciences, Multidisciplinary
Xiao Liang, Genhou Wang, Jinhan Gao, Haishui Jiang, Guoli Yuan, Dian Li, Wentao Cao, Yilong Zheng, Qiang Fang, Byung-Su Lee, Soo-In Park, Yaxi Wang, Jia Zhao
Summary: The study on the late Permian-Triassic sedimentary successions in the Central Qiangtang metamorphic belt reveals valuable information about the tectonic environment and associated structures of trench-slope basins. Through a multidisciplinary approach, it is found that these sedimentary successions were mainly deposited during the northward subduction of the Longmu Co-Shuanghu Tethys Ocean beneath the North Qiangtang block, showing regional spatiotemporal variations and providing new insights into the geological evolution of trench-slope basins as well as ancient analogs characterized by extensional tectonism.
Review
Geosciences, Multidisciplinary
Mohamed Abd El-Wahed, Mohamed Attia
Summary: Deformation belts in the Arabian-Nubian Shield (ANS) can be divided into suture-related belts and post-accretionary systems. Suture-related belts include arc-arc and arc-continental, while post-accretionary systems include N-trending compression zones and NW-trending strike-slip faults. Terrane accretion occurred between 800 and 700 Ma, forming arc-arc sutures. The collision of different terranes resulted in major faulting and folding. The ANS collided with East and West Gondwana, forming arc-continental sutures and N-trending deformation belts.
GEOLOGICAL JOURNAL
(2023)
Article
Geosciences, Multidisciplinary
Andrew S. Merdith, Simon E. Williams, Alan S. Collins, Michael G. Tetley, Jacob A. Mulder, Morgan L. Blades, Alexander Young, Sheree E. Armistead, John Cannon, Sabin Zahirovic, R. Dietmar Mueller
Summary: Recent progress in plate tectonic reconstructions has expanded beyond continental drift to reconstruct the full evolving configuration of tectonic plates and plate boundaries. A continuous full-plate model spanning 1 billion years to present-day has been developed, incorporating a revised model for the Neoproterozoic-Cambrian period and connecting it with models of the Phanerozoic. The model is geologically constrained and based on preserved data from past plate boundaries, with the goal of providing a detailed and self-consistent tectonic reconstruction for the last billion years of Earth's history.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geochemistry & Geophysics
Gabriela M. Almeida, Reinhardt A. Fuck, Elton L. Dantas, Sanmy S. Lima
Summary: During orogenesis, the nature of rocks, geological environment, P-T conditions, and type of collision contribute to the formation of different structures and deformational styles. This paper focuses on the Sa similar to o Miguel do Aleixo Shear Zone in NE Brazil, which separates domains with different structural and metamorphic grades and provides insights into the tectonic implications and evolution of the orogen.
Article
Geochemistry & Geophysics
Kristijan Rajic, Hugues Raimbourg, Vincent Famin, Benjamin Moris-Muttoni, Donald M. Fisher, Kristin D. Morell, Aurelien Canizares
Summary: We conducted a structural study on the Kodiak accretionary complex in Alaska, USA to understand its thermal structure and the processes of exhumation. The complex consists of tectonic melanges and coherent units, with melanges characterized by shear deformation and coherent units affected by horizontal shortening. Our findings indicate peak temperatures ranging from 220 to 400 degrees C, with the highest temperatures recorded in the central part of the complex. Based on structural and thermal data, we conclude that the rocks in the Kodiak complex experienced stages of burial and exhumation, with vertical motions reaching up to 13 km. The exhumation resulted from prism thickening and surficial erosion.
Article
Geochemistry & Geophysics
Kristijan Rajic, Hugues Raimbourg, Vincent Famin, Benjamin Moris-Muttoni, Donald M. Fisher, Kristin D. Morell, Aurelien Canizares
Summary: A study on the structural and thermal characteristics of the Kodiak accretionary complex in Alaska, USA suggests that the complex experienced two stages of burial and exhumation. The study also reveals a dome-like structure in the central part of the complex and records subsidence episodes along the southeastern border. The rates of vertical motion in the complex are comparable to estimates in modern margins.
Article
Geochemistry & Geophysics
Yanfang Qin, Yasuyuki Nakamura, Shuichi Kodaira, Gou Fujie
Summary: This study collected seismic data from different regions along the Japan trench during the 2011 Tohoku earthquake to investigate the impact of along-trench structures on seismic activities. The study found variations in geological structures, such as differences in sediment thickness and the presence of fold-and-thrust belts in the south. These structural variations influence shallow megathrust slip and tsunami generation.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Geosciences, Multidisciplinary
Prasoon Anand, Snehashish Chakraverty, Soumyajit Mukherjee
Summary: Geological data often have uncertainties, requiring geoscientists to work with a range of possible data to establish models. This study further develops a geological model using fuzzy set concept, where the fuzzified velocity profile effectively considers uncertainties in parameter magnitudes. This approach demonstrates the capability of incorporating a range of parameter magnitudes in modeling (structural) geological processes.
JOURNAL OF EARTH SYSTEM SCIENCE
(2021)
Article
Geochemistry & Geophysics
Emily J. Kleber, Adam P. McKean, Adam I. Hiscock, Michael D. Hylland, Christian L. Hardwick, Greg N. McDonald, Zachary W. Anderson, Steve D. Bowman, Grant C. Willis, Ben A. Erickson
Summary: The text details the geologic background and effects of the Magna earthquake that occurred on March 18, 2020. It emphasizes the importance of geological research and highlights the critical role of multidisciplinary fields in earthquake science and preparedness on the Wasatch Front.
SEISMOLOGICAL RESEARCH LETTERS
(2021)
Article
Geochemistry & Geophysics
Lauro Cezar M. de Lira Santos, Roberto G. de Oliveira, Walter E. de Medeiros, Geysson de A. Lages, Elton L. Dantas, Peter A. Cawood, Glenda L. Santos, Jose F. de Araujo Neto, Haroldo M. Lima, Mariana S. da Paixa
Summary: The Neoproterozoic Borborema Province is connected to several orogenic belts along western Gondwana, but its crustal evolution is controversial. Sm-Nd analysis of the Alto Moxot ' o Terrane in the central Borborema Province reveals that the rocks are mostly Paleoarchean to early Paleoproterozoic, which is different from adjacent terranes. 3D geophysical modeling shows unique features of the Alto Moxot ' o Terrane, including K-poor and Th-rich crust and higher gravity gradients compared to neighboring lithospheric record, as well as prominent magnetic anomalies that coincide with major shear zones.
Article
Geochemistry & Geophysics
Arathi G. Panicker, M. Ram Mohan, Dewashish Upadhyay, B. Vikram Raju, Hiredya Chauhan, N. V. Chalapathi Rao
Summary: The Doddakadanur Anorthosite Complex in the Western Dharwar Craton of southern India is a well-preserved sequence of anorthosites and related rocks intruded into amphibolites. The rocks have undergone metamorphism and preserve igneous cumulus textures, with peak P-T conditions estimated at 650-700 degrees C and 7-11 kbar. The geochemistry and ages of these rocks suggest enrichment by subduction-derived fluids and reveal a convergent margin tectonic setting for the complex.
Article
Geosciences, Multidisciplinary
James Granath, Ansgar Wanke, Harald Stollhofen
Summary: This study conducts a structural analysis of the Waterberg Thrust in northern Namibia, clarifying its relationship to the deposition of Karoo sediments. The fault brings older crystalline rocks up against younger Karoo sediments, and the study also identifies various folds and unconformities.
JOURNAL OF STRUCTURAL GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Mark G. Rowan
Summary: This study uses 3-D, depth-migrated seismic data to analyze the structural architecture and evolution of eastern Mississippi Canyon in the northeastern Gulf of Mexico. The study finds that the movement of salt in this area was driven by a combination of gravity and differential loading forces, which varied in importance and direction over time. These findings are significant for understanding the more complex structures and evolution of the northern Gulf of Mexico.
MARINE AND PETROLEUM GEOLOGY
(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.