Article
Geochemistry & Geophysics
Aleksei Chebotarev, Anastasia Arzhannikova, Sergey Arzhannikov
Summary: This study focuses on the morphometric analysis of the Tunka Fault and its transverse drainage network to understand the tectonic control on landscape evolution. It reveals variable long-term throw rates and estimated timing of geomorphic structures formation, as well as the close relationship between fault kinematics and landscape response along the Tunka Fault.
Article
Geochemistry & Geophysics
Ran Issachar, Angela Maria Gomez-Garcia, Joerg Ebbing
Summary: The Red Sea is an ideal location for studying the process of continental break-up, and we have analyzed its lithospheric structure using gravity response. Our results indicate the presence of ultra-wide margins and limited oceanic crust in the southern part of the Red Sea, while the northern part has exhumed mantle and limited oceanic crust. We also find a high-density body near the southern Arabian coast, likely associated with magmatic underplating.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Environmental Sciences
Hongwu Zhang, Guangquan Liu, Chensu Zhao, Luohao Zhang, Qiang Zhang, Heng Fu, Shuai Cao
Summary: This study conducted a model test on gravity erosion of loess in a typical gully sub-basin with a complex geomorphological form. The results show that heavy rainfall runoff is the main external force for loess erosion and is also a significant factor in stimulating and intensifying gravity erosion. The study found that the soil structure and the height of the critical surface directly impact the possibility of gravity erosion. The distribution of erosion types and sedimentation processes vary in different sections of the gully.
INTERNATIONAL JOURNAL OF SEDIMENT RESEARCH
(2023)
Article
Water Resources
S. A. S. Araffa, H. S. Sabet, M. H. Mahmoud
Summary: The Nubian sandstone aquifer (NSA) is characterized using 19 VES stations, 201 gravity stations, and 183 magnetic stations. The interpretation results show that the upper surface depth of the NSA ranges from 707 to 1154 m, with resistivities indicating good groundwater quality. The study region exhibits various structural characteristics in different trends, including northwest-southeast, northeast-southwest, and east-west trends.
APPLIED WATER SCIENCE
(2023)
Article
Chemistry, Analytical
Cheng Zhong, Chang Li, Peng Gao, Hui Li
Summary: Post-seismic vegetation recovery is crucial for local ecosystem and slope stability, and this study found that about 60% of landslide vegetation in the Wenchuan earthquake area reaches pre-earthquake levels within ten years and is expected to fully recover within 20 years. Vegetation recovery is significantly influenced by topographic factors, especially elevation and slope, while being minimally related to distance to epicenter, fault ruptures, and rivers.
Article
Geochemistry & Geophysics
D. Maestrelli, S. Brune, G. Corti, D. Keir, A. A. Muluneh, F. Sani
Summary: Rift-Rift-Rift triple junctions are key features of emergent plate boundary networks during fragmentation of a continent. The differential extension velocities in the rift branches determine the localization of the structural triple junction, and the imposed velocities affect the resulting fault patterns.
Article
Physics, Particles & Fields
Shahrokh Parvizi, Mojtaba Shahbazi
Summary: Analogue gravity has successfully simulated Hawking radiation and conducted laboratory tests. By simulating a black hole as an area in a fluid, such as water, where sound waves cannot escape the event horizon and phonon oscillations are observed as Hawking radiation, these simulations offer an alternative description and new insights into high energy physics problems. This paper reveals that the analogue of information loss is the loss of momentum per unit mass of the fluid over the horizon, and maintaining this momentum loss leads to the island prescription.
EUROPEAN PHYSICAL JOURNAL C
(2023)
Article
Geosciences, Multidisciplinary
Abdullah Aghababaei, Iraj Adollahie-Fard, Marco Antonio Cacador Martins-Ferreira, Farzin Ghaemi, Behnam Rahimi, Reza Moussavi-Harami
Summary: This study analyzes the tectono-stratigraphic evolution of syn-and post-rift sedimentary basins in the eastern Kopeh Dagh Belt of Iran using seismic and age data. The results show that the geometry of the post-rift basins was influenced by the Middle Jurassic rifting stage, which also affected the sedimentation in the Upper Jurassic and Lower Cretaceous.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Leonardo M. Pichel, Ritske S. Huismans, Robert Gawthorpe, Jan Inge Faleide, Thomas Theunissen
Summary: Research finds that wide rifted margins are characterized by gravity-driven updip extension and downdip shortening, and syn-depositional salt flow and salt stretching also occur in these margins. The results have significant implications for understanding the genesis and evolution of salt-bearing rifted margins.
Article
Geochemistry & Geophysics
Lachlan J. M. Wright, Christopher A. Scholz, James D. Muirhead, Donna J. Shillington
Summary: This study characterizes the faulting patterns in the Malawi (Nyasa) Rift using multiple offshore seismic reflection data sets and age-dated drill core. The results indicate that intra-rift faults play a crucial role in rift basin development and should be considered in seismic hazard assessments.
Article
Astronomy & Astrophysics
A. Alonso-Serrano, M. Liska
Summary: By heuristically deriving the Hawking temperature and Bekenstein entropy from the existence of a minimal resolvable area, we found quantum gravity corrections that are qualitatively consistent with results obtained by other methods. The size of the minimal area is constrained by semiclassical black hole physics, particularly by the entropy content of Hawking radiation. The derivation method is also applied to finding the Unruh temperature associated with causal diamonds and establishing a new relation between this temperature and the entropy of the causal diamond's horizon.
Article
Geochemistry & Geophysics
Liang Xue, Robert Moucha, Christopher A. Scholz
Summary: Climate-triggered fluctuations of surface masses can influence the stress state and slip behavior of faults in continental rifts. Lakes developed within these rifts can modulate the stress states and slip rates of rift border faults and intrarift faults. This study provides insights into the relationship between climate-driven surface mass variations and the subsurface stress state of fault planes and associated seismic potentials.
EARTH AND PLANETARY SCIENCE LETTERS
(2022)
Article
Mechanics
Leo-Paul Euve, Kim Pham, Philippe Petitjeans, Vincent Pagneux, Agnes Maurel
Summary: In the study of water waves and resonators, a one-dimensional model was derived to describe the resonator's effect, which was validated for accuracy in the harmonic regime. This model accurately reproduces scattering coefficients and amplitudes within the resonator.
JOURNAL OF FLUID MECHANICS
(2021)
Article
Geosciences, Multidisciplinary
Darharta Dahrin, Harman Amir, Putu Billy Suryanata, Satria Bijaksana, Silvia Jannatul Fajar, Khalil Ibrahim, Ulvienin Harlianti, Ilham Arisbaya, Mutiara Qalbi Pebrian, Adinda Aisyah Rahman, Adibbian Kasendri
Summary: In this study, ground magnetic measurements and density measurements were used to investigate the subsurface structures of the Sianok segment in the Great Sumatran Fault. The results reveal the presence of shallow magma chambers and abundant volcanic deposits in the area.
FRONTIERS IN EARTH SCIENCE
(2022)
Article
Geosciences, Multidisciplinary
Euan Mearns, Didier Sornette
Summary: The geodynamics and faulting mechanism of the M7.8 Tangshan earthquake were reexamined within the framework of a transfer fault complex, revealing a close relationship between the earthquake event and transfer faults.
JOURNAL OF ASIAN EARTH SCIENCES
(2021)
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)