Article
Multidisciplinary Sciences
Chao Liu, Takashi Yoshino, Daisuke Yamazaki, Noriyoshi Tsujino, Hitoshi Gomi, Moe Sakurai, Youyue Zhang, Ran Wang, Longli Guan, Kayan Lau, Yoshinori Tange, Yuji Higo
Summary: This study investigates the effect of water on the seismic properties of olivine aggregates in the oceanic lithosphere. The results show that water substantially enhances energy dispersion and reduces elastic moduli, with an attenuation peak at higher frequencies. The findings suggest that the sharp seismic changes at the lithosphere-asthenosphere boundary far from mid-ocean ridges could be attributed to the difference in water content between the lithosphere and asthenosphere.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2023)
Article
Geochemistry & Geophysics
P. W. Ball, K. Czarnota, N. J. White, M. Klocking, D. R. Davies
Summary: The study aims to understand the upper mantle structure through analyzing volcanic rocks in eastern Australia. Results suggest that volcanic activity in the region may be caused by the passage of mantle plumes, leading to significantly higher mantle temperatures, thinning lithosphere, and uplift of the Eastern Highlands.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geochemistry & Geophysics
Zikun Zhou, Deli Wang, Tianqi Wang, Aihua Weng, Yabin Li, Junhao Guo, Xueqiu Wang
Summary: The electrical lithosphere-asthenosphere boundary (LAB) in Northeast China is found to be undulating, with the North-South Gravity Lineament marking the transition from deep to shallow LAB. The thickest lithosphere is beneath the Great Xing'an Range (GXAR), reaching a depth of about 200 km, while the thinnest lithosphere is beneath the Changbai Mountain volcano, with a depth of about 50 km.
Article
Geosciences, Multidisciplinary
Diandian Peng, Lijun Liu, Jiashun Hu, Sanzhong Li, Yiming Liu
Summary: The study examines the formation of stagnant slabs in the mantle transition zone beneath East Asia, finding that a westward mantle wind driven by a pressure gradient plays a dominant role in advecting and holding the slabs in place. This mechanism was previously unrealized and stands in contrast to previously proposed hypotheses such as vertical resistances to slab penetration or trench retreat. The findings suggest that the mantle wind is a key factor in the widespread tectonics observed in the region.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geochemistry & Geophysics
Hanlin Liu, Joseph S. Byrnes, Maximiliano Bezada, Qingju Wu, Shunping Pei, Jing He
Summary: This study investigates the teleseismic P-wave attenuation beneath the Central Asian Orogenic Belt and the North China Craton using seismic data. The results show that high attenuation is observed beneath most of the volcanoes, suggesting that these volcanoes may tap melt from the ambient asthenosphere and occur where the lithosphere is thin. However, at the Xilinhot-Abaga volcanic site, low attenuation is observed, indicating that deep melting may be initiated by fluids from the subducted Pacific plate.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geosciences, Multidisciplinary
Dante Canil, Roy D. Hyndman, Dominic Fode
Summary: The depth to the lithosphere-asthenopshere boundary (LAB) is crucial for understanding the temperature, strength, and deformation of the lithosphere. This study in the Canadian Cordillera shows a correlation between the equilibration depth of alkaline lavas and the LAB, indicating control of LAB depth in hot back arcs by mineral transitions and H2O storage capacity.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Astronomy & Astrophysics
Fa-Bin Pan, Chong Jin, Xiaobo He, Lu Tao, Bao-Jian Jia
Summary: Cenozoic volcanic rocks in the East Asian continental margin are formed by asthenosphere upwelling and decompression melting, with varying origins attributed to plate tectonics and magma sources. The migratory nature of volcanic activities in response to the retreat and rollback of the Pacific slab is observed, suggesting a connection to intraplate volcanism.
EARTH AND SPACE SCIENCE
(2021)
Article
Geochemistry & Geophysics
Rong Xu, Sarah Lambart, Oliver Nebel, Ming Li, Zhongjie Bai, Junbo Zhang, Ganglan Zhang, Jianfeng Gao, Hong Zhong, Yongsheng Liu
Summary: This study investigated the iron isotope compositions of Cenozoic basalts in Southeast China, finding significant variations related to different types of basalts and their respective sources.
EARTH AND PLANETARY SCIENCE LETTERS
(2024)
Article
Geochemistry & Geophysics
Shengping Qian, Esteban Gazel, Alexander R. L. Nichols, Hao Cheng, Le Zhang, Vincent J. Salters, Jie Li, Xiaoping Xia, Huaiyang Zhou
Summary: This study on the lavas from seamounts in the South China Sea confirms that late Cenozoic lavas originate from recycled young oceanic crust and sediments, with an olivine-dominated mantle source and no high-He-3/He-4 mantle plume component. Late Cenozoic magmatism may be related to upwelling instabilities from the mantle transition zone, triggered by a stagnant slab. These findings provide additional evidence for the development of global mantle heterogeneities through the storage and recycling of crustal materials near or within the mantle transition zone.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geochemistry & Geophysics
Dante Canil, James K. Russell, Dominic Fode
Summary: The study reveals that the mantle lithosphere beneath the Canadian Cordillera is ancient and has maintained a thin and hot state for at least the past 30 million years, rather than recently cooled from the asthenosphere. Various temperature measurements indicate that the cooling rate of these mantle xenoliths is very slow.
Article
Geochemistry & Geophysics
Roy D. Hyndman, Dante Canil
Summary: Recent volcanic rocks across the Cordillera landward of the volcanic arc are mainly produced by partial melt in the upper asthenosphere, where two conditions are met: thin lithosphere and shallow hot asthenosphere, with a wet upper asthenosphere. Integrated geochemical analyses, seismic velocities, and receiver functions help to constrain the source temperature and depth of partial melt, as well as define the lithosphere-asthenosphere boundary. The spatial distribution of these recent volcanics is discussed in terms of mechanisms such as small-scale convection and phase transitions at specific depths.
GEOCHEMISTRY GEOPHYSICS GEOSYSTEMS
(2021)
Article
Geochemistry & Geophysics
Suzanne Atkins, Nicolas Coltice
Summary: High lateral viscosity variations are required to produce Earth-like values of lithospheric net rotation (LNR). Other factors such as the presence of continents and a viscosity gradient at the transition zone also play important roles in determining the magnitude of net rotation. Additionally, the evolution of LNR is too complicated to predict in models, but the range of LNR within simulations follows a Gaussian distribution with a correlation time of 5 Myr.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Tianze Liu, Peter M. Shearer
Summary: A new method using S-reflections generated by teleseismic S waves is proposed to image lithospheric discontinuities, providing high-resolution images of LAB and MLD below the contiguous US. The results show reasonable agreement with traditional techniques, suggesting the possibility of joint inversion for better constraint of lithospheric discontinuity properties.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Review
Astronomy & Astrophysics
Masaki Yoshida, Kazunori Yoshizawa
Summary: The influence of the continental lithosphere and its root on the continental drift is crucial in plate tectonics history, with stability determined by the viscosity contrast between the continental lithosphere and the underlying mantle. Orogenic belts or suture zones surrounding cratons act as a buffer to protect cratons and ensure longevity. The presence of low-viscosity asthenosphere reduces basal drag force, contributing to the stability and longevity of the cratonic lithosphere.
ANNUAL REVIEW OF EARTH AND PLANETARY SCIENCES, VOL 49, 2021
(2021)
Article
Geosciences, Multidisciplinary
Frederic Mouthereau, Paul Angrand, Anthony Jourdon, Sebastien Ternois, Charlotte Fillon, Sylvain Calassou, Sebastien Chevrot, Mary Ford, Laurent Jolivet, Gianreto Manatschal, Emmanuel Masini, Isabelle Thinon, Olivier Vidal, Thierry Baudin
Summary: This passage discusses the evolution of the lithosphere in Europe, highlighting the impact of subduction, rifting, and plume inputs on the mantle. It explains the contrast and differences between different crust-mantle and lithosphere-asthenosphere interactions, as well as the long-standing effects on present-day stress, topography, and orogenic deformation. The text also emphasizes the high mantle heat flux in Central Europe, the importance of rifted margins, and the stability of the thermal-mechanical structure of the lithosphere.
BSGF-EARTH SCIENCES BULLETIN
(2021)
Article
Geosciences, Multidisciplinary
V. V. Ruzhich, G. G. Kocharyan, A. V. Travin, V. B. Savel'eva, A. A. Ostapchuk, S. V. Rasskazov, T. A. Yasnygina, D. S. Yudin
DOKLADY EARTH SCIENCES
(2018)
Article
Geography, Physical
Hassan Abdulmonem, Usoltseva Marina, Rasskazov Sergei, Chuvashova Irina, Titova Lyubov
QUATERNARY INTERNATIONAL
(2019)
Article
Geochemistry & Geophysics
Sergei Rasskazov, Yi-Min Sun, Irina Chuvashova, Tatyana Yasnygina, Chen Yang, Zhenhua Xie, Elena Saranina, Nikolay Gerasimov, Tatyana Vladimirova
Article
Geosciences, Multidisciplinary
Sergei Rasskazov, Aigul Ilyasova, Sergei Bornyakov, Irina Chuvashova, Eugene Chebykin
FRONTIERS OF EARTH SCIENCE
(2020)
Article
Geochemistry & Geophysics
Sergei Rasskazov, Irina Chuvashova, Tatyana Yasnygina, Elena Saranina
Article
Geochemistry & Geophysics
Sergei Rasskazov, IrMa Chuvashova, Tatyana Yasnygina, Elena Saranina, Nikolay Gerasimov, Youseph Ailow, Yi-Min Sun
Summary: This study reports volcanic rocks from deep-seated sources in the central and southwestern parts of the Baikal Rift System, discussing their formation processes and geological structures. The deep-seated crust-mantle sources in these regions indicate cooperative pull-to-axis and convergent effects created in the Japan-Baikal Geodynamic Corridor and Indo-Asian interactional region, respectively.
Article
Biodiversity Conservation
Lyubov Titova, Abdulmonem Hassan, Ivan Mikhailov, Elena Rodionova, Sergei Rasskazov, Marina Usoltseva
Summary: This study described the diatom content in Pliocene sediments extracted from the Tunka Basin in Russia, revealing the formation of two ecozones with different taxonomic diversity and corresponding palaeoenvironmental conditions. Analysis of diatoms showed that the reservoir was cooler during sedimentation in Ecozone II, characterized by an increase in arctic-alpine taxa. The absence of Baikal Pliocene endemics and presence of local endemics in the Tunka core suggest no geographical connection between the Tunka Valley palaeolake and Lake Baikal during the Pliocene.
Article
Biodiversity Conservation
Marina Usoltseva, Lyubov Titova, Abdulmonem Hassan, Sergei Rasskazov, Alexey Morozov
Summary: In this study, the morphology of Alveolophora antiqua from the freshwater Early Miocene paleolake in the Barguzin Valley was examined using scanning electron microscopy. The results revealed a wide variability in valve shape with different shapes dominating in different layers. The authors propose that this variability might be attributed to a sharp short-term cooling event or polyploidization. Additionally, the discovery of A. antiqua in the Early Miocene deposits expands the geographic and stratigraphic ranges of this species.
Article
Geosciences, Multidisciplinary
K. Zh Seminsky, S. A. Bornyakov, A. A. Dobrynina, N. A. Radziminovich, S. Rasskazov, V. A. San'kov, P. Mialle, A. A. Bobrov, A. M. Il'yasova, D. Salko, A. San'kov, A. K. Seminsky, E. P. Chebykin, A. N. Shagun, V. German, Ts A. Tubanov, M. Ulzibat
Summary: The preliminary study of the Bystrinskoe earthquake in the Baikal region provides insight into the seismic activity in the area and suggests that future strong earthquakes in the region may have precursors that can be identified through comprehensive analysis of various geologic processes. The earthquake is believed to have occurred along the Main Sayan Fault due to strike-slip movement along the W-NW fault, with the epicenter located at a shallow depth.
RUSSIAN GEOLOGY AND GEOPHYSICS
(2021)
Article
Geochemistry & Geophysics
A. Al Hamoud, S. Rasskazov, I. S. Chuvashova, T. F. Tregub, M. N. Rubtsova, V. L. Kolomiyets, R. Ts Budaev, A. Hassan, M. A. Volkov
Summary: The study focuses on sediments along the Mishikha River in Russia, which range in age from the Eocene to the Lower Pliocene. Stratigraphic subdivision is based on lithogeochemical data and mineral compositions. The sediments show a combination of normal and overturned layers, believed to result from strike-slip deformations at the beginning of the late orogenic stage of the Baikal rift development. Regional correlations suggest the sediments in the Mishikha section represent alluvial sedimentation in contrast to other parts of the Tankhoi Steppe.
GEODYNAMICS & TECTONOPHYSICS
(2021)
Article
Geochemistry & Geophysics
S. Rasskazov, A. M. Ilyasova, I. S. Chuvashova, S. A. Bornyakov, A. Orgilyianov, S. N. Kovalenko, A. K. Seminsky, E. P. Popov, E. P. Chebykin
GEODYNAMICS & TECTONOPHYSICS
(2020)
Article
Geochemistry & Geophysics
A. Hassan, S. Rasskazov, I. S. Chuvashova, T. A. Yasnygina, L. A. Titova, N. Kulaaina, M. Usoltseva
GEODYNAMICS & TECTONOPHYSICS
(2020)
Article
Geochemistry & Geophysics
S. V. Rasskazov, I. S. Chuvashova, T. A. Yasnygina, Yi-min Sun, E. V. Saranina
GEODYNAMICS & TECTONOPHYSICS
(2019)
Article
Geochemistry & Geophysics
S. Rasskazov, A. M. Ilyasova, I. S. Chuvashova, E. P. Chebykin
GEODYNAMICS & TECTONOPHYSICS
(2018)
Article
Archaeology
Yoshimitsu Suda, Andrei V. Grebennikov, Yaroslav V. Kuzmin, Michael D. Glascock, Keiji Wada, Jeffrey R. Ferguson, Jong Chan Kim, Vladimir K. Popov, Sergei V. Rasskazov, Tatyana A. Yasnygina, Noriyuki Saito, Hironobu Takehara, Tristan Carter, Zsolt Kasztovszky, Katalin T. Biro, Akira Ono
JOURNAL OF ARCHAEOLOGICAL SCIENCE-REPORTS
(2018)
Article
Geosciences, Multidisciplinary
Haifeng Chen, Hao Zou, M. Santosh, Huawen Cao, Franco Pirajno, Changcheng Huang, Mingcai Hou
Summary: Researchers have identified a supervolcano eruption event in the tuff layers from the Early-Middle Triassic boundary in the Yangtze Block. This eruption may have contributed to the delayed biotic recovery after the end-Permian mass extinction.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
Yanjuan Yin, Baohua Zhang, Xinzhuan Guo
Summary: This study determines the Fe-Mn interdiffusion rates in natural Mn-bearing garnet crystals with 750 ppm H2O using an experimental approach. The results show that the Fe-Mn interdiffusion coefficient slightly decreases with increasing Fe content, and water significantly enhances the Fe-Mn interdiffusion in garnet. These findings suggest that the time required for homogenization of the compositional zoning of a garnet is much shorter than previously thought.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
Yirang Jang, Sung Won Kim, Vinod O. Samuel, Sanghoon Kwon, Seung-Ik Park, M. Santosh, Keewook Yi
Summary: Detrital zircon geochronology and Hf isotope analysis are used to infer provenance characteristics and evaluate the tectonic evolution of sedimentary basins. The results of this study show that the Paleozoic sequences of the Okcheon Belt have a diverse provenance linked to different tectonic environments.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
Stephen F. Foley, Isra S. Ezad
Summary: This study investigates the trace element compositions of melts and minerals from hydrous pyroxenites containing K-richterite through high-pressure experiments. The results show that different minerals play different roles in the enrichment of various trace elements. The study also models the isotopic aging process in hydrous pyroxenite source rocks.
GEOSCIENCE FRONTIERS
(2024)
Article
Geosciences, Multidisciplinary
G. Harshitha, C. Manikyamba, M. Santosh, Cheng-Xue Yang, A. Keshav Krishna, V. V. Sesha Sai, I. Panduranga Reddy
Summary: The early Archean oceans underwent significant redox changes that had a lasting impact on the Earth's biosphere. This study investigates the geochemical characteristics of Archean Mnformations in southern India and reveals the importance of these sedimentary deposits in understanding the ancient redox conditions and sedimentation patterns. The findings suggest that the sediments were deposited in shallow to deeper shelf environments in the Archean proto-ocean, and they provide evidence of regional episodes of ocean oxygenation prior to the Great Oxygenation Event.
GEOSCIENCE FRONTIERS
(2024)