Article
Geology
Shucheng Wu, Yingjie Yang, Yixian Xu, Juan Carlos Afonso, Anqi Zhang
Summary: The recycling of oceanic lithosphere at subduction zones is a fundamental geodynamic process. While it is believed that old oceanic slabs are consumed entirely in subduction zones, recent studies suggest that small pieces may be trapped along ancient subduction zones. This study provides seismic evidence for a preserved paleo-oceanic lithosphere beneath the Junggar region in China, suggesting that significant portions of paleo-oceanic lithosphere can contribute to continental growth.
Article
Environmental Sciences
Laurent Geoffroy, Francois Chauvet, Jean-Claude Ringenbach
Summary: The extent and nature of continental material in oceans are investigated, revealing the presence of middle-lower continental crust seaward of volcanic passive margins. These findings suggest that the distribution of continents in oceans may be more significant than previously believed.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Review
Geosciences, Multidisciplinary
Alexander Koptev, Sierd Cloetingh, Taras Gerya, Pietro Sternai, Svetlana Botsyun
Summary: This article provides a brief overview of the known scenarios of subduction initiation in intra-oceanic and ocean-continent tectonic settings. Intra-oceanic subduction is commonly associated with mechanical heterogeneities within the oceanic lithosphere, while traditional mechanisms for ocean-continent subduction are rare. In contrast, polarity reversal and lateral propagation-induced subduction initiation are well-documented in nature and experimentally.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geochemistry & Geophysics
Sheng-Sheng Chen, Wei-Ming Fan, Ren-Deng Shi, Ji-Feng Xu, Ke Yang, Zheng Pan
Summary: This study presents an analysis of volcanic rocks from the Yunzhug area in northern Lhasa, providing insights into an important stage of tectono-magmatic events in the region. The rocks consist of high-K affinity A-type rhyolites and andesites, originating from a mixed mantle source with contributions from continental crust melting.
Article
Geosciences, Multidisciplinary
J. C. Meza-Cala, F. Tsikalas, J. Faleide, M. M. Abdelmalak
Summary: The study of the late Mesozoic-Cenozoic tectono-stratigraphic evolution of the northern Lofoten-Vesteralen margin offshore northern Norway was conducted using a combination of 2D multi-channel seismic profiles, 3D seismic survey, and potential field and well data. The analysis revealed distinct along-margin basin segmentation, with five main rift phases and eight mapped fault families identified, as well as compressional deformation features related to volcanic build-up and doming of Cenozoic successions. The study highlighted the essential nature of the northern Lofoten-Vesteralen margin in understanding the tectono-stratigraphic evolution of the NE Atlantic margins.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
Chris S. Marien, Elizabeth K. Drewes-Todd, Allen Stork, Erin Todd, James B. Gill, J. Elis Hoffmann, Kenichiro M. Tani, Charlotte Allen, Carsten Munker
Summary: Viti Levu in Fiji is an important location for studying the formation of continental crust. The diverse plutons found in this area provide insights into the processes involved in the development of juvenile crust. Analyses of major and trace elements, isotopes, and ages of the plutons reveal different suites and suggest a partial melting process in the formation of the crust.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2022)
Article
Geochemistry & Geophysics
Ye Yuan, Enyuan He, Minghui Zhao, Cuimei Zhang, Jinwei Gao, Jiazheng Zhang, Zhen Sun
Summary: This article focuses on the crustal structure of the continent-ocean transition zone in the mid-northern margin of the South China Sea. Through geological and geophysical surveys, as well as modeling analysis, the landward and oceanward boundaries of the transition zone were determined. The variations in crustal thickness and tectonic activities during the transition were revealed.
Article
Geochemistry & Geophysics
Marta Neres, Cesar R. Ranero
Summary: About half of the rifted margins are believed to have formed through extension accompanied by minor magmatism. A primary influence on the conceptual models of magma-poor rift systems is the structure of the continent-to-ocean transition exemplified by the West Iberia Margin. However, previous interpretations of magnetic data from West Iberia have not adequately considered uncertainties, leading to overly detailed interpretations. Our study uses synthetic magnetic modelling and a refined velocity model to show that magnetic data at sea level cannot resolve deep-water lithological layering. Our results support an abrupt seafloor spreading initiation that terminated mantle exhumation, rather than gradual lithospheric thinning and asthenospheric upwelling driving mantle melting.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2023)
Article
Geosciences, Multidisciplinary
Fan Yang, Xiao-Long Huang, Yi-Gang Xu, Peng-Li He
Summary: This study presents new data on the spatial characteristics of mantle plumes and stagnant slabs in Southeast Asia, providing insights into their interactions and the influences on the mantle.
GEOLOGICAL SOCIETY OF AMERICA BULLETIN
(2023)
Review
Geochemistry & Geophysics
H. Y. Hu, R. J. Stern, Y. Rojas-Agramonte, A. Garcia-Casco
Summary: This study compiled geochronologic and geochemical data of igneous and metamorphic rocks in the Greater Antilles islands to investigate the formation and evolution of the Greater Antilles Arc (GAA). The results indicate that the GAA started in the Early Cretaceous and ceased in the Paleogene, and it was influenced by the Caribbean Large Igneous Province.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2022)
Article
Geochemistry & Geophysics
T. Museur, D. Graindorge, F. Klingelhoefer, W. R. Roest, C. Basile, L. Loncke, F. Sapin
Summary: The Demerara Plateau, located at the junction of Central Atlantic and Equatorial Atlantic Oceans, has a complex crust structure with possible volcanic and magmatic activities. The study suggests that the plateau may be an inherited volcanic margin from the Jurassic era, reworked during the Cretaceous to form the present-day structural features. The research emphasizes the significant contribution of thermal anomalies and tectonic phases in the history of similar Transform Marginal Plateaus.
Article
Geosciences, Multidisciplinary
Zhenzhen Wang, Zhidan Zhao, Xuping Li, Yuanku Meng, Dong Liu, Xuanxue Mo, Fuyun Cong
Summary: In this study, the evolution process and geodynamic background of the Nenjiang Ocean are revealed through the study of late Paleozoic rocks. The characteristics of the Heihe granite are consistent with coeval sedimentary strata and geochemical data, implying an extensional tectonic setting in the late Devonian-early Carboniferous. According to the geodynamic model, the Nenjiang Ocean underwent rollback and closure, resulting in the formation of the Heihe monzonite and granite during the late Paleozoic.
JOURNAL OF ASIAN EARTH SCIENCES
(2024)
Article
Geochemistry & Geophysics
A. V. Ganelin, M. V. Luchitskaya, M. V. Maskaev
Summary: The Uyandina-Yasachnaya volcano-plutonic belt in Northeast Asia is a large structure striking northwest for 900 km. This belt shows facies variability and zoning, with mafic volcanic rocks in the northeast and felsic volcanic rocks in the southwest. The paper presents new data on the geochemistry, isotopes, and age of volcanic rocks in the Darpir zone of the belt.
GEOCHEMISTRY INTERNATIONAL
(2023)
Article
Geosciences, Multidisciplinary
Juan Camilo Meza-Cala, Filippos Tsikalas, Mansour M. M. Abdelmalak, Jan Inge Faleide
Summary: Late Cretaceous-Palaeocene continental extension in the Lofoten-Vesteralen margin is investigated using seismic and potential field datasets, revealing two low-angle detachment structures named WRHFC and NURFC. Multiple extensional episodes of varying intensities were mapped, with a narrower WRHFC accommodating more localized extension and a wider NURFC showing widespread extension. The extension discrepancy between fault-block geometries and the whole conjugate margin system indicates a ductile mode of deformation towards breakup. These findings contribute to the understanding of the breakup evolution in the northern NE Atlantic.
Article
Geosciences, Multidisciplinary
Alok Kumar, Hetu Sheth, Prasenjit Barman, Mohd Ibrahim
Summary: Ophiolites are ancient oceanic lithosphere slices obducted on land during continental collision and ocean closure, providing insights into submarine volcanological and petrological processes. The study of volcanic facies in ophiolites can offer valuable guidance on their paleodepths and paleotectonic settings.
BULLETIN OF VOLCANOLOGY
(2021)
Article
Geochemistry & Geophysics
Tadashi Yamasaki, Freysteinn Sigmundsson, Masato Iguchi
EARTH AND PLANETARY SCIENCE LETTERS
(2020)
Article
Geochemistry & Geophysics
N. L. Celli, S. Lebedev, A. J. Schaeffer, M. Ravenna, C. Gaina
GEOPHYSICAL JOURNAL INTERNATIONAL
(2020)
Article
Geology
Gwenn Peron-Pinvidic, John Naliboff
Article
Multidisciplinary Sciences
Freysteinn Sigmundsson, Virginie Pinel, Ronni Grapenthin, Andrew Hooper, Saemundur A. Halldorsson, Pall Einarsson, Benedikt G. Ofeigsson, Elias R. Heimisson, Kristin Jonsdottir, Magnus T. Gudmundsson, Kristin Vogfjord, Michelle Parks, Siqi Li, Vincent Drouin, Halldor Geirsson, Stephanie Dumont, Hildur M. Fridriksdottir, Gunnar B. Gudmundsson, Tim J. Wright, Tadashi Yamasaki
NATURE COMMUNICATIONS
(2020)
Article
Geosciences, Multidisciplinary
Nobuo Matsushima, Mitsuru Utsugi, Shinichi Takakura, Tadashi Yamasaki, Maki Hata, Takeshi Hashimoto, Makoto Uyeshima
EARTH PLANETS AND SPACE
(2020)
Article
Geochemistry & Geophysics
Tadashi Yamasaki, Hiroaki Takahashi, Mako Ohzono, Tim J. Wright, Tomokazu Kobayashi
Summary: The study investigates the impact of elastic thickness non-uniformity on viscoelastic crustal deformation caused by magma emplacement in active volcanoes. Findings suggest that the post-emplacement viscoelastic subsidence can be affected by the elastic thickness non-uniformity, depending on the relationship between the horizontal width of magma emplacement and the thinner elastic layer. The influence of the non-uniformity on estimating crustal viscosity is minimal unless the spatial variation of geothermal gradient is considered.
GEOPHYSICAL JOURNAL INTERNATIONAL
(2021)
Article
Geochemistry & Geophysics
Per Terje Osmundsen, Gwenn Peron-Pinvidic, Halvor Bunkholt
Summary: The study reveals the structural evolution of rifted margins near Norway, demonstrating that early rift structures were dominated by the post-Caledonian template and evolved into deeper faults and core complexes in the Late Paleozoic and Earliest Mesozoic. The transition from core complex extension to incising faults occurred before the deposition of Late Triassic-Early Jurassic strata, highlighting significant complexity and extension magnitudes in proximal margins.
Article
Geochemistry & Geophysics
Camille Le Magoarou, Katja Hirsch, Clement Fleury, Remy Martin, Johana Ramirez-Bernal, Philip Ball
Summary: The study of the Egyptian Red Sea involved a comprehensive multidisciplinary approach, using exploration wells, gravity and magnetic data, as well as seismic reflection and refraction data sets to build a detailed 3D subsurface model. The integration of 2D and 3D modeling techniques revealed high-density magnetic bodies along the margin, and accurately delineated the Zabargad transform fault zone in the computed crustal thickness maps.
INTERPRETATION-A JOURNAL OF SUBSURFACE CHARACTERIZATION
(2021)
Article
Geosciences, Multidisciplinary
Cuimei Zhang, Zhen Sun, Gianreto Manatschal, Xiong Pang, Sanzhong Li, Daniel Sauter, Gwenn Peron-Pinvidic, Minghui Zhao
Summary: By analyzing high-resolution seismic reflection profiles, this study investigates the structure transition process from continental to oceanic crust in the mid-northern South China Sea, shedding light on the mechanism of continental lithospheric breakup and new oceanic crust formation. The results reveal a hybrid crust at the base of the Ocean-Continent Transition (OCT) in this region, characterized by crustal thinning and emplacement of new materials.
EARTH-SCIENCE REVIEWS
(2021)
Article
Geosciences, Multidisciplinary
Tadashi Yamasaki, Freysteinn Sigmundsson, Masato Iguchi
Summary: Temporal variation of ground surface displacement rates at volcanoes can reflect changes in the volumetric magma supply rate over time. The viscoelastic properties of the crust play a significant role in the correlation between magma supply and surface deformation.
JOURNAL OF VOLCANOLOGY AND GEOTHERMAL RESEARCH
(2022)
Article
Geochemistry & Geophysics
Gwenn Peron-Pinvidic, Tor Akermoen, Lars Ivar Leivestad
Summary: The Norwegian Continental Shelf is widely used for studying rifting processes and rifted margin architecture. However, there are still unanswered questions about the structural details and nature of rocks at depth due to limited imaging of the full basement. The Geoex MCG Regional Deep Imaging 2019 (RDI19) dataset provides regional seismic reflection profiles of high resolution and deep imaging, offering unprecedented imaging of the entire margin architecture. Gravity modelling experiments are used to discuss the acoustic basement in the distal margin. Based on the observations and interpretation, an updated map of the margin structural domains is proposed.
Article
Geochemistry & Geophysics
G. Peron-Pinvidic, L. Fourel, S. J. H. Buiter
Summary: Most rifts and rifted margins around the world developed on former omgens, implying heterogeneous pre-rift lithospheric configuration. Our study reveals that considering pre-rift orogenic inheritance can more accurately explain the geometries of rifted margins.
Article
Geosciences, Multidisciplinary
Moamen Ali, Alessandro Decarlis, Marco Ligi, Philip Ball, William Bosworth, Andrea Ceriani
Summary: This paper describes the rift architecture, dynamics and evolution of the northern Red Sea and identifies domains that relate to first-order geodynamic processes. The proximal margin domain is characterized by latest Oligocene-Miocene half-graben basins, while the offshore region is a necking domain dominated by extensional faults. The distal margin domain experiences crustal thinning via a detachment fault.
JOURNAL OF THE GEOLOGICAL SOCIETY
(2023)
Article
Environmental Sciences
Gwenn Peron-Pinvidic
Summary: This article uses high resolution seismic reflection data to describe the seismic reflection Moho at the Mid-Norwegian continental rifted margin across the entire margin, including the lower crust and upper mantle, and discusses its structural characteristics and tectonic deformation patterns.
COMMUNICATIONS EARTH & ENVIRONMENT
(2022)
Article
Environmental Sciences
Nobuo Geshi, Tadashi Yamasaki, Isoji Miyagi, Chris E. Conway
Summary: The study reveals the decompression of magma chamber during the caldera-forming eruption of Aira volcano in Japan 30,000 years ago, challenging previous theoretical models and proposing explanations for the catastrophic consequences caused by this decompression.
COMMUNICATIONS EARTH & ENVIRONMENT
(2021)
Article
Geosciences, Multidisciplinary
Weijiao Ma, Jinbu Li, Min Wang
Summary: The petroleum resource assessment obtained from laboratory tests on old core samples tends to underestimate the in situ resources. This study investigates the hydrocarbon loss and restoration by comparing preserved and exposed core samples. It is found that previous studies have severely underestimated the in situ hydrocarbon potential due to factors such as sample crushing and crucible waiting. A new restoration model is proposed to compensate for these losses.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Shaoyun Chen, Yongqiang Yang, Longwei Qiu, Xiaojuan Wang, Erejep Habilaxim
Summary: Quartz cement is an important authigenic mineral in the tight sandstones of the Shaximiao Formation in the Sichuan Basin. This study analyzed the silicon sources of the quartz cement using mineralogical, fluid inclusion, and geochemical data. The results showed that smectite alteration and dissolution of aluminosilicate minerals were the primary sources of silicon for quartz cementation. Contributions from volcanic material hydrolysis and pressure solution were relatively minor. The presence of chlorite films inhibited the development of quartz overgrowths and had minimal impact on reservoir quality.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xing Jian, Ping Guan, Ling Fu, Wei Zhang, Xiaotian Shen, Hanjing Fu, Ling Wang
Summary: This study presents a synthesis of new detrital zircon dating results and published data from the Cenozoic Qaidam basin, revealing the spatiotemporal variation of detrital zircon age populations and supporting models of synchronous deformation in northern Tibet. The study emphasizes the importance of considering textural and sedimentological parameters in zircon provenance interpretations, as well as the need for integrated provenance analysis involving other detritus components.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
A. Peketi, G. Sriram, A. Mazumdar, P. Dewangan, A. Zatale, V. Rajurkar, Gayatri Shirodkar, V. Mahale, V. Yatheesh
Summary: This study investigates 13 submarine seamounts in the southern Andaman volcanic arc and observes evidence of hydrothermal activity in one of the seamounts. The evidence includes plumes rich in dissolved gases, live chemosymbiotic organisms, and the deposition of neoforming minerals. These observations suggest the development of a new hydrothermal field in the least explored Andaman Sea.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Yanxian Zhu, Zhiliang He, Xiaowen Guo, Long Li, Sheng He, Jian Gao, Shuangjian Li, Huili Li
Summary: This study investigates the fluid evolution history of the hydrothermal dolomite reservoir in the Middle Permian Maokou Formation in the Sichuan Basin. The results reveal the diagenetic sequences, mineral origins, salinity history, and pressure evolution using various analytical techniques. The findings provide important insights into the gas charge, escape, and preservation conditions of the reservoir.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Rafaella de Carvalho Antunes, Julia Campos Guerrero, Ricardo Jorge Jahnert
Summary: This study presents a detailed sedimentary model and identifies various sedimentary facies associations in the coquina deposits of the Itapema Formation in the offshore pre-salt Buzios Field of the Santos Basin. These facies associations were primarily influenced by waves and currents and reflect a complex depositional system.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Kang Meng, Tongwei Zhang, Deyong Shao, Xiuyan Liu, Hui Song, Heng Peng
Summary: In this study, an integrated method of measuring optical reflectance and Raman spectroscopy is proposed to accurately determine the thermal maturity of Lower Cambrian shales in South China. The results show that this method is reliable and effective, and it has important implications for analyzing overmature shale.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Mohamed A. K. El-Ghali, Olga Shelukhina, Iftikhar Ahmed Abbasi, Mohamed S. H. Moustafa, Osman Salad Hersi, Numair A. Siddiqui, Khalid Al-Ramadan, Abdullah Alqubalee, Abdulwahab Muhammad Bello, Abduljamiu O. Amao
Summary: This study employs an integrated depositional and sequence stratigraphic approach to assess the control of diagenesis on reservoir porosity of a hybrid-energy delta system. The study focuses on the Barik Formation in the Haushi-Huqf region of Central Oman, which represents a highstand system tract of a hybrid-energy delta. The assessments reveal that the reservoir porosity is controlled by various degrees of diagenetic processes, including mechanically infiltrated clays and kaolinitization of silicate grains.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Xiaocan Yu, Chunlian Wang, Hua Huang, Kai Yan
Summary: Oilfield brines are a significant alternative lithium resource. This study investigates the metallogenic characteristics and enrichment process of oilfield brines from the Jianghan Basin, central China using chemical and multi-isotope data. The results suggest that lithium enrichment in these brines is the result of interaction with clastic host rocks and dilution by meteoric water.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Jianghao Qiao, Xiwu Luan, Thanuja D. Raveendrasinghe, Yintao Lu, Guozhang Fan, Xinyuan Wei, Long Jin, Jian Yin, Haozhe Ma, Lushan Jiang
Summary: This study investigates the Tanintharyi passive continental margin in the Andaman Sea and reveals the potential of the Oligocene/Early Miocene carbonate platform in the region as a significant hydrocarbon reservoir. It also examines the influence of changes in sedimentary facies and the tectonic setting of the Andaman Sea on the evolution of pockmarks.
MARINE AND PETROLEUM GEOLOGY
(2024)
Article
Geosciences, Multidisciplinary
Anastasios Nikitas, Georgios Makrodimitras, Maria V. Triantaphyllou, Nikolaos Pasadakis, Kimon Christanis, Stavros Kalaitzidis, Grigoris Rousakis, Ioannis Panagiotopoulos, Alexandra Gogou, Alexandros Papadopoulos, Efthimios Tartaras, Aristofanis Stefatos
Summary: Due to the lack of deep wells in the broader region, studying mud volcanic deposits can improve the geological understanding of the Mediterranean Ridge. In this study, biostratigraphic and geochemical analyses were performed on mud breccia deposits from five Mud Volcanoes in the central MR. The results indicate the origin of these deposits and provide insights into the source rock potential. Seismic data is also used to determine the distribution of major lithostratigraphic formations.
MARINE AND PETROLEUM GEOLOGY
(2024)
