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Brittle faulting and tectonic stress history on the western margin of the Congo Basin between Kinshasa and Brazzaville: Implications for the evolution of the Malebo Pool and the Congo River Tectonophysics (IF 2.9) Pub Date : 2024-03-18 H.M.D. Nkodia, F. Boudzoumou, T. Miyouma, E. Kongota, G.B. Ganza, P. Lahogue, D. Delvaux
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GNSS imaging coseismic and postseismic slip associated with the 2021 M 8.2 Chignik, Alaska earthquake Tectonophysics (IF 2.9) Pub Date : 2024-03-16 Yunfei Xiang, Jianping Yue, Hao Wang, Yuanyuan Chen
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The different effects of polished and post-slip roughnesses on fault stability Tectonophysics (IF 2.9) Pub Date : 2024-03-15 Yan-Qun Zhuo, Peixun Liu, Yanshuang Guo, Hao Chen, Lei Zhang, Shunyun Chen
Linking fault morphology to its mechanical properties in laboratory experiments may shed some light on analyzing the seismogenic potential of a natural fault. Many previous experiments suggested that increasing the roughness of a polished fault tends to stabilize the fault. Furthermore, the roughness of faults, both experimental and natural, spontaneously evolves during slip. Here, we investigate the
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Neogene–Quaternary initiation of the Southern Malawi Rift and linkage to the reactivated Carboniferous–Jurassic Shire Rift Tectonophysics (IF 2.9) Pub Date : 2024-03-15 Oyewande Ojo, Stuart N. Thomson, Daniel A. Laó-Dávila
Low-temperature thermochronology studies record Miocene rift initiation of the Northern Malawi Rift. However, no such studies are available that constrain the onset time of rifting of the Southern Malawi Rift, and Cenozoic reactivation of the older Carboniferous-Jurassic Shire Rift. Here we present thermal history models derived from new apatite fission-track and (U-Th-Sm)/He data from the footwalls
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Subduction transforms azimuthal anisotropy in the Juan de Fuca plate Tectonophysics (IF 2.9) Pub Date : 2024-03-14 Xingyu Ren, Xin Liu, Dapeng Zhao
To clarify the internal structure of the oceanic lithosphere-asthenosphere system, here we determine a new 3-D model of azimuthal anisotropic shear-wave velocity (Vs) down to ~200 km depth from the Juan de Fuca (JdF) mid-ocean ridge to the Cascadia subduction zone, by inverting newly measured teleseismic fundamental mode Rayleigh-wave phase and amplitude data at periods of 25–100 s. The JdF lithosphere
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Crustal shear wave velocity and radial anisotropy beneath the Mississippi embayment from ambient noise tomography Tectonophysics (IF 2.9) Pub Date : 2024-03-11 Chunyu Liu, Wei Yang, Weitao Wang
Imaging of shallow multiple basins and middle to lower crustal structure beneath the Mississippi embayment is still limited. No tomography studies have delineated multiple basins as effectively as those from reflection and drilling experiments. Several studies have constructed different velocity models for the middle to lower crust. We take advantage of the Northern Embayment Lithosphere Experiment
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Geometry, slip rate, and the latest earthquake of the Jinta Nanshan Fault: Interactions of the Altyn Tagh Fault and the Qilian Shan at the northern margin of the Tibetan Plateau Tectonophysics (IF 2.9) Pub Date : 2024-03-11 Bo Zhang, Mark B. Allen, Yunsheng Yao, Junwen Zhu, Ming Wu, Weitong Wang, Yameng Wen, Wengui He, Zhongsheng Lei, Wei Pang
This work presents a study of late Quaternary activity on the Jinta Nanshan Fault (JTF), to constrain its properties including seismic hazard, and to understand the tectonic evolution of the northern edge of the Tibetan Plateau. The JTF has developed during northeastward growth of the Qilian fold-and-thrust belt and eastward growth of the Altyn Tagh Fault. Based on remotely-sensed image interpretation
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Mesozoic structural evolution of the Northern South China Sea margin using potential field modelling Tectonophysics (IF 2.9) Pub Date : 2024-03-11 Syed Wajid Hanif Bukhari, Sanzhong Li, Jie Liu, Ze Liu, Muhammad Farhan, Ishaq Kakar
This study conducts a comprehensive geophysical inspection of the Northern South China Sea Margin (NSCSM), a complex and pivotal area for unraveling the tectonic history of Southeast China. We employ structural interpretation of the gravity and magnetic data by applying processing techniques and 2D forward modelling to delineate and subdivide the primary subsurface structures, and also to identify
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Crust and upper mantle S wave velocity structure in eastern Turkey based on ambient noise tomography Tectonophysics (IF 2.9) Pub Date : 2024-03-11 Peng Wang, Juqing Chen, Xuping Feng, Lei Pan, Xiaofei Chen
Eastern Turkey is an ideal location to study continental collision, which is manifested here by the presence of extensive volcanism and rapid tectonic uplift. To better understand the relationship between these surface phenomena and underground structures, we collect continuous waveform data from 121 seismic stations in the region to investigate the S wave velocity structure of the crust and upper
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Episodic evolution of intracontinental orogenic deformation: Insight from the southern Bogda fold-and-thrust belt of the Tianshan Mountains, NW China Tectonophysics (IF 2.9) Pub Date : 2024-03-07 Yu Zhen, Dengfa He, Di Li, Xuan Chen, Guobin Fu
The Mesozoic-Cenozoic Tianshan orogenic belt, a key area for studying intracontinental orogenic deformation, experienced multiple uplift episodes due to the far-field effects from a series of collision events along the southern margin of Eurasia. Focusing on the fold-and-thwrust belt at the southern margin of the Bogda Mountain, a branch of the eastern Tianshan orogenic belt, we integrated 2D seismic
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Crustal deformation in the vicinity of the Tan-Lu Fault Zone in East China constrained by receiver function analyses Tectonophysics (IF 2.9) Pub Date : 2024-03-04 Tuo Zheng, JiaXuan Wang, Stephen S. Gao, Zhifeng Ding, Kelly H. Liu, Youqiang Yu, Qinping Gu, Xiaoping Fan, Lijun Chang
To investigate the spatial distribution of crustal deformation and related geodynamic processes associated with the Tan-Lu Fault Zone (TLFZ) in East China, we measured crustal anisotropy based on the sinusoidal moveout of the P-to-S conversions from the Moho observed on receiver functions. Totally 142 well-defined crustal anisotropy measurements were obtained from the China National Seismic Network
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Integrating near-surface geophysical methods and remote sensing techniques for reconstructing fault-bounded valleys (Mellieha valley, Malta) Tectonophysics (IF 2.9) Pub Date : 2024-03-02 Luciano Galone, Fabio Villani, Emanuele Colica, Davide Pistillo, Paola Baccheschi, Francesco Panzera, Jesús Galindo-Zaldívar, Sebastiano D'Amico
The island of Malta (central Mediterranean) is dissected by several WSW-trending fault-line valleys related to Miocene-Pliocene extensional tectonics. Some valleys host remnants of alluvial deposits that could provide information on possible Quaternary faulting, but the thickness of these deposits and their subsurface extent is poorly constrained. Our study aimed to investigate the structural configuration
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Refining the final phase of the seafloor spreading process in the West Philippine Basin through the recalibration of magnetic isochrones Tectonophysics (IF 2.9) Pub Date : 2024-03-01 Luning Shang, Hailong Li, Kai Lu, Panfeng Li, Gang Hu, Yong Zhang, Yongjian Yao, Chuansheng Yang
The evolution of the West Philippine Basin (WPB), the largest back-arc basin in the northwestern Pacific margin, remains unclear, mainly due to the lack of accurate magnetic chronological constraints. We integrate a newly acquired shipborne magnetic grid and EMAG2 data to investigate the final phase of seafloor spreading and post-spreading magma-poor extension in the WPB during the Eocene and Oligocene
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Rupture branching, propagation, and termination at the eastern end of the 2021 Mw 7.4 Maduo earthquake, northern Tibetan plateau Tectonophysics (IF 2.9) Pub Date : 2024-02-29 Wenqian Yao, Jing Liu-Zeng, Xuhua Shi, Zijun Wang, Alba Rodriguez Padilla, Kexin Qin, Longfei Han, Yanxiu Shao, Xiaoli Liu, Jing Xu, Yan Wang, Yunpeng Gao
The propagation of the 2021 7.4 Maduo earthquake rupture from the central Jiangcuo fault (JCF) onto its eastern terminus, in the northern Tibetan Plateau, exhibits a complex surface geometry with conjugate faults, bends, and stepovers. About 50 km east of the 2021 earthquake epicenter, which is located at Maduo County within the Tibetan plateau, the surface rupture along the Jiangcuo eastern fault
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Kinematic reconstruction of the Jurassic intraplate rift deformation in the Northern Carnarvon Basin, Australia Tectonophysics (IF 2.9) Pub Date : 2024-02-24 Patrick Makuluni, Juerg Hauser, Laurent Langhi, Stuart Clark
Intraplate rift basins, like the inboard sub-basins of the Northern Carnarvon Basin (NCB), host rich energy resources, but their complex geological histories complicate exploration efforts. The paleo-deformation that formed these intraplate rifts also controlled their resource systems distribution. Hence, understanding their complex kinematic and tectonostratigraphic histories can optimise exploration
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3-D coseismic displacement mapping of the 2015 Mw7.8 Gorkha earthquake using multi-viewed InSAR Tectonophysics (IF 2.9) Pub Date : 2024-02-23 Han Chen, Chunyan Qu, Dezheng Zhao, Xinjian Shan, Chao Ma, Wenyu Gong, Lei Zhao, Luca Dal Zilio
After the 2015 Mw7.8 Gorkha earthquake, geodetic measurements have been extensively used to constrain slip kinematics, fault geometry of the Main Himalayan Thrust (MHT) and earthquake cycle deformation. However, the spatially dense coseismic 3-D displacements remain largely unresolved, owing to the side-looking geometry of SAR images and sparse GPS observations. We improved 3-D displacements by incorporating
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The Berkovići (BIH) ML = 6.0 earthquake sequence of 22 April 2022 – Seismological and seismotectonic analyses Tectonophysics (IF 2.9) Pub Date : 2024-02-17 Iva Dasović, Marijan Herak, Davorka Herak, Helena Latečki, Marin Sečanj, Bruno Tomljenović, Snježana Cvijić-Amulić, Josip Stipčević
In the southeast of Bosnia and Herzegovina, the Berkovići earthquake sequence started with the mainshock on 22 April 2022 21:07 UTC at focal depth 22 km with magnitude = 6.0 ( = 5.7). Our preliminary estimation of the mainshock's maximum intensity is VII EMS for Berkovići where 29% of buildings were damaged. We analysed the first nine months of this sequence, 22 April 2022–22 January 2023. The earthquakes
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An anomalous rollback process of Mesozoic flat-slab subduction in South China Tectonophysics (IF 2.9) Pub Date : 2024-02-13 Bo Yan, Wu-Xian Li, Xiao-Long Huang, Yang Yu, Ji-Hua Tao
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Cenozoic tectonic transition within the western segment of the Longmenshan fault, southeast margin of the Tibetan Plateau: Insights from geological and geophysical data Tectonophysics (IF 2.9) Pub Date : 2024-02-12 Jian Yang, Qiao Wang, Shibin Xia, Guozhong Liao, Chuanlong Mou, Hu Wang, Anping Xiang, Hua Li, Wei Zhang, Xuben Wang
Thrust fault zones around the Tibetan Plateau (TP) record the tectonic evolution between the Plateau and its surrounding terranes, which is helpful for understanding the uplift mechanism and deformational processes of the TP. The Longmenshan fault (LMSF) is the tectonic boundary (TB) between the Yangtze terrane (YT) and Songpan-Garze terrane (SGT), while the TB of its western segment, either the Lijiang-Xiaojinhe
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Deep structural characteristics and dynamic significance of the Southeastern margin of the North China Craton: Insights from gravity/GNSS/seismic observations Tectonophysics (IF 2.9) Pub Date : 2024-02-12 Qipei Pang, Yunlong Wu, Risheng Chu, Yi Zhang, Jianguo Yan, Lifen Zhang, Wulin Liao, Xiaoqian Sun, Emilia Yu Dokuchits, Oscar C. Nkwazema
The North China Craton is a natural laboratory for studying thinning, transformation, and replacement of ancient lithospheres. Its density structure and isostatic state of the crust provide key information for a better understanding of the deep tectonic characteristics and dynamic mechanism. In this study, we analyze observed seismic and gravity/GNSS co-located data, and explore the tectonic characteristics
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A constrained 3D gravity inversion for complex density distributions: Application to Brazil rifted continental margin Tectonophysics (IF 2.9) Pub Date : 2024-02-12 Xianzhe Yin, Changli Yao, Junlu Wang, Wenqiang Xu, Yuanman Zheng, Zelin Li, Wenrui Mu
Gravity inversion is a highly effective method for investigating regional geological structures, and this paper proposes an optimization scheme for constrained three-dimensional (3D) gravity inversion to obtain a 3D density model, utilizing prior geological and geophysics information. Specifically, the proposed method enhances deep structural imaging resolution and minimizes false structures by progressively
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Reconstruction of the Curie depth distribution on the Arabian Plate: Implications for its regional thermal structure Tectonophysics (IF 2.9) Pub Date : 2024-02-11 Ahmed Salem, Asma Alahmed, Simon A. Stewart, Harald Karg
Heat flow measurements in the Arabian Plate are inconsistent with anticipated heat flow levels and are not uniformly distributed. They originate mostly from shallow temperature measurements for geothermal surveys and are not specifically targeted for determining the thermal field at the lithosphere scale. We employed spectral analysis of aeromagnetic data based on the fractal distribution of sources
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The Bajo Grande Basin: Late Jurassic(?)-Early Cretaceous syn-orogenic depocenters in southwestern Gondwana Tectonophysics (IF 2.9) Pub Date : 2024-02-10 Maximiliano Jose Perez Frasette, César Navarrete, Joaquín Bastías-Silva, Mauro Valle, David Chew, Maximiliano Iglesias, Manuel Suárez, Marcelo Márquez, Foteini Drakou, Andrés Folguera
In recent years, multiple Mesozoic episodes of crustal shortening and extension have been documented throughout Patagonia. These findings unveil a complex history of regional intraplate tectonic deformation. Nevertheless, there are numerous sectors in this vast region that have yet to undergo in-depth tectonic investigations, and hence aspects of its evolutionary history remain elusive. We present
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3D gravity and magnetic inversion reveal geothermal structure dominated by radioactive heat production of granites in the Weihe basin Tectonophysics (IF 2.9) Pub Date : 2024-02-09 Xuliang Feng, Jiayue Ma, Ruikun Guo, Jin’ai Zhang, Liu Yang
The Weihe basin possesses abundant in medium-low temperature geothermal resources. However, the primary source of heat in the basin, whether it stems from the mantle or crust, remains a subject of debate. In this study, we employ three-dimensional inversion of gravity and magnetic anomalies to ascertain the basement depth, Moho depth, Curie point depth, and spatial distribution of magnetic bodies within
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Transverse Faizabad Ridge in the foreland Ganga basin: A mosaic of fragmented crustal blocks as revealed by magnetotellurics Tectonophysics (IF 2.9) Pub Date : 2024-02-09 M. Demudu Babu, A. Manglik, G. Pavankumar, M. Suresh, S. Thiagarajan
The Ganga basin bordering the central segment of the Himalayan arc hosts several buried transverse ridges, which are considered to have significant influence on the Himalayan seismicity and tectonics. Information on the nature of crustal structure, composition and spatial heterogeneities of these ridges is elusive. The Faizabad Ridge is one such prominent ridge, considered to be subsurface northward
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Footprints of continental amalgamation from three-dimensional resistivity structure: Insights from the Tianshan and surrounding basins, China Tectonophysics (IF 2.9) Pub Date : 2024-02-08 Shuyu Liu, Yixian Xu, Bo Yang, Tao Wang, Yuan Shi, Zhong Peng, Man Li, Xuewei Bao, Qinyan Wang
To decipher the mechanism by which the Phanerozoic accretionary terranes collaged with the Tarim Craton, we constructed a three-dimensional (3-D) lithospheric resistivity model using magnetotelluric data and inversion with testing. The model covers the area across the northern Tarim Craton in the south and the southern Altaids in the north and shows five tectonic-related low-resistivity regions. The
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Resolving basement crustal architecture and extensional tectonics using 3D inversion modelling of airborne gravity data in the Otway Basin region, Victoria Tectonophysics (IF 2.9) Pub Date : 2024-02-08 M.A. McLean, G.A. Pears, M. Boyd, R.A. Cayley
Seismic reflection surveys are effective for imaging the crustal architecture of sedimentary basins including the top-of-basement, which is an important interface for understanding rift tectonics, structural controls imposed on basin fill, and basin system prospectivity. However, seismic data can be less effective where the basin is thick, logistics limit acquisition, or where vintage seismic are noisy
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The relationship between the nature of margins and the subduction of oceanic plateaus: Insights from variations in the forearc basement and sediments along the New Guinea Trench in the West Pacific Tectonophysics (IF 2.9) Pub Date : 2024-02-08 Zhengyi Zhang, Luan Xiwu, Sanzhong Li, Xiujuan Wang, Dongdong Dong
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The Taguelft syncline (Moroccan Central High Atlas) an example of extension-related mini-basin evidenced by paleomagnetic data Tectonophysics (IF 2.9) Pub Date : 2024-02-07 B. Moussaid, J.J. Villalaín, H. El Ouardi, A. Casas-Sainz, B. Oliva-Urcia, S. Torres-López, T. Román-Berdiel, N. Bouya, R. Soto
The purpose of this work is to use paleomagnetic data to determine the tectonic evolution of the inverted High Atlas basin in the area of the Taguelft syncline. This syncline shows two well defined rock types of Jurassic age: marly limestones and red beds, and therefore provides the opportunity of comparing paleomagnetic results from rocks with different magnetic mineralogy. Forty-three sites, in an
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Variations in the orientation of Cenozoic contractional strain in the northeastern Tibetan Plateau: Evidence from magnetic fabrics (western Qaidam Basin) Tectonophysics (IF 2.9) Pub Date : 2024-02-06 Bingshuai Li, Maodu Yan, Weilin Zhang, Xiaomin Fang, Yi Chen, Dawen Zhang, Yongpeng Yang, Chong Guan, Jing Bao
Recognizing variations in the orientation of contractional strain is essential for understanding the tectonic evolution of an orogenic system. Many studies on the northeastern (NE) Tibetan Plateau have analyzed the orientation of crustal shortening, but the timing and spatial distribution of this deformation are still debated. Here, we conduct detailed magnetic fabric analyses of post-Oligocene sedimentary
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Subduction without volcanic arc magma: Insights from two young subduction zones in the western Pacific Tectonophysics (IF 2.9) Pub Date : 2024-02-04 Miao Dong, Tianyao Hao, Longqing Xu, Jiangyang Zhang, Jian Zhang, ChuanChuan Lü, Qingyu He
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Systematics of slab-derived components in Central Java, Sunda Arc: Evidence for differential material transfer across the Southeast Asian convergent margin Tectonophysics (IF 2.9) Pub Date : 2024-01-29 Esti Handini, Toshiaki Hasenaka, Nicholas D. Barber, Tomoyuki Shibata, Yasushi Mori, Agung Harijoko
The modern volcanoes of Indonesia, represent the cycling of material and heat along the Southeast (SE) Asian subduction zone. This volcanic activity is well exemplified in the middle section of Java Island, which is found on the Sunda arc portion of the SE Asian convergent system. Central Java's volcanoes inherit their geochemistry from silicate melts that formed due to hydrous melting at a range of
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Metamorphic P-T-t constraint on the Bantimala garnet-epidote-glaucophane schist and its implication on Mesozoic evolution of Western Sulawesi, Indonesia Tectonophysics (IF 2.9) Pub Date : 2024-01-28 Juiyen Hsia, Jian Zhang, Jiahui Qian, Jin Liu, Yuntao Tian, Welson Weisheng Xian, Changqing Yin, Peng Gao, Marnie Forster, Minjie Guo
Bantimala Complex of Western Sulawesi contains a mixed lithology of blueschist and eclogite, which are the ideal rock assemblage for understanding the geodynamic process of the Tethys subduction system. However, previous studies only reported rough P-T ranges and failed to present a systematic P-T evolutionary history for blueschists of this area. In this study, we carried out detailed petrographic
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Quaternary slip-rates probabilistic estimation for the Northern Apennines frontal thrust in the Po Plain (Northern Italy) by integrating surface and subsurface data Tectonophysics (IF 2.9) Pub Date : 2024-01-28 F.E. Maesano, C. Zuffetti, A. Abbate, C. D'Ambrogi, R. Bersezio
The Northern Apennines thrust front in the Po basin exhibits active blind thrusts and associated anticlines, with some anticline crests either emerging or shallowly buried beneath late Pleistocene continental deposits. This study focuses on the outcropping San Colombano Structure and its buried neighbouring Casalpusterlengo-Zorlesco Structure, representing thrust-controlled anticlines in the central
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Virtual earthquakes in a numerical granular rock box experiment Tectonophysics (IF 2.9) Pub Date : 2024-02-01 Mikito Furuichi, Jian Chen, Daisuke Nishiura, Ryuta Arai, Yuzuru Yamamoto, Satoshi Ide
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Seismic evidence for break-off of the Molucca Sea slab Tectonophysics (IF 2.9) Pub Date : 2024-01-24 Tianmeng Yuan, Zewei Wang, Dapeng Zhao, Rui Gao, Xiaofei Chen
The Molucca Sea region is an active arc-arc collision zone whose structure and mantle dynamics are essential for reconstructing the tectonic evolution of Southeast Asia. The key to understanding the tectonic processes of the region is to clarify the morphology of the subducted slabs. However, geometric details of the subducted Molucca Sea slab and other slab segments under this region remain controversial
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Architecture of interacting deformation band fault zones in siliciclastic rocks and its influence on geomechanical property distribution Tectonophysics (IF 2.9) Pub Date : 2024-01-23 Abhisek Basa, Anita Torabi, David L. Vasconcelos, Francisco H.R. Bezerra, Francisco C.C. Nogueira
Spatial organization of strain-hardening zones and the adjacent damage zones associated with faulting of porous siliciclastic rocks influence the across-strike variation of geomechanical properties. The across-fault geomechanical property distribution is expected to change when fault zones of distinct orientations interact. We performed outcrop-scale structural analysis along scanlines trending perpendicular
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Seismological constraints on the lithosphere-asthenosphere system beneath the central and east Iranian Plateau Tectonophysics (IF 2.9) Pub Date : 2024-01-17 Z. Zarunizadeh, K. Motaghi, R. Movaghari, Y. Yang, K. Priestley
The lithosphere-asthenosphere system beneath the central and eastern parts of the Iranian Plateau is investigated using a two-plane wave surface-wave tomography. We analyzed 11,430 teleseismic Rayleigh waveforms collected from 59 seismic stations and generated phase velocity maps at nine periods ranging from 25 s to 111 s. By inverting the phase velocity dispersion data, we constructed a 3-D S-wave
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Tectonic-Sedimentary evolution of the Tuscan shelf (Italy): Seismic-stratigraphic/structural analysis of Neogenic succession in the Tyrrhenian Sea between Elba Island and Monte Argentario promontory Tectonophysics (IF 2.9) Pub Date : 2024-01-18 M. Buttinelli, F. Mazzarini, G. Musumeci, R. Maffucci, F.E. Maesano, I. Cavirani, P. Diviacco
A reinterpretation of the vectorized version of public vintage seismic profiles in the Tyrrhenian Sea (Italy), between Elba Island and Monte Argentario promontory, was performed to reappraise the Tuscan shelf tectonic evolution. Despite the almost flat geometry of the seafloor, seismic profiles show a corrugated morphology of the pre-neogenic deformed acoustic basement, organized in structural highs
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Unexpected postglacial faulting in passive continental margins: Storfjorden glacial trough, Barents Sea Tectonophysics (IF 2.9) Pub Date : 2024-01-20 María Teresa Pedrosa-González, Jesús Galindo-Zaldivar, Lourdes González-Castillo, Gemma Ercilla
In high latitude continental margins, glacio-seismotectonics becomes particularly relevant during postglacial unloading periods and related isostatic rebound. Based on multibeam bathymetry and parametric profiles, an unexpected active 30 km long NNW-SSE fault is imaged for the first time in the inner Storfjorden glacial trough, at the passive continental margin of the Barents Sea. The 10 km southern
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Evidence for partial melting and earthquake activity in the crust from a 2-D electrical resistivity model in the vicinity of the Chayu region, southeastern Jiali-Chayu fault, Tibetan Plateau Tectonophysics (IF 2.9) Pub Date : 2024-01-16 Weiqiang Li, Changqing Yu, Changchun Zou, Dingbang Wei, Huimin Zhang, Xiangzhi Zeng, Pengxiao Fan, Chenggong Liu
The southeastern segment of the Jiali-Chayu fault is a prominent strike-slip fault that separates the eastern Lhasa terrane. Its formation and activity are influenced by the subduction of the Indian plate towards the Lhasa terrane and clockwise rotation in the Himalayan Eastern syntaxis region. Notably, the Chayu 1950 Ms 8.6 earthquake, triggered by this fault, remains the largest recorded inland earthquake
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Heat flow and thermal structure in the Koyna seismic zone, western India: Implications for recurrent reservoir triggered seismicity Tectonophysics (IF 2.9) Pub Date : 2024-01-19 Deepjyoti Goswami, Vyasulu V. Akkiraju, Sukanta Roy
Scientific core drilling to a depth of 1522 m in the Koyna seismic zone, western India, provides a rare opportunity to characterize the geothermal regime and study its implications on seismogenesis. The borehole KBH-1 penetrated the 932.5 m thick Deccan Trap and continued for 589.5 m in the granite-gneiss basement. The equilibrium temperature profile was obtained from measurements made 10 months after
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Migration of hot to super-hot palaeo-fluids in an extensional setting (eastern Elba Island, Italy) Tectonophysics (IF 2.9) Pub Date : 2024-01-14 Martina Zucchi, Andrea Brogi, Domenico Liotta, Rosa Anna Fregola, Alfredo Caggianelli, Gennaro Ventruti, Riccardo Avanzinelli, Giovanni Ruggieri
Understanding how hot (250°–350 °C) to super-hot (>350 °C) fluids circulate and interact with host rocks in fault-controlled upper continental crust is a challenging task. In this paper, we present the results of a structural, fluid inclusions, Sr isotope, petrographic and mineral study on an exhumed geothermal system to describe how hot to super-hot fluids were controlled by the increased permeability
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Magnetotelluric evidence for long-lasting crustal memory in an intraplate setting – the Grójec Fault and Mid-Polish Trough in central Poland Tectonophysics (IF 2.9) Pub Date : 2024-01-17 Stanisław Mazur, Waldemar Jóźwiak, Krzysztof Nowożyński, Szymon Oryński
The Grójec Fault (GF) is of significant interest due to its orientation perpendicular to the dominant NW-SE structural grain in the transition zone from Precambrian to Phanerozoic Europe. The fault is located along the extension of the boundary between the Sarmatia and Fennoscandia segments of the East European Craton (EEC). While Late Cretaceous fault activity has been documented by studies since
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A new reconstruction of Phanerozoic Earth evolution: Toward a big-data approach to global paleogeography Tectonophysics (IF 2.9) Pub Date : 2024-01-12 Lei Wu, Sergei Pisarevsky, Zheng-Xiang Li, J. Brendan Murphy, Yebo Liu
Reliable reconstruction of global paleogeography through deep geologic time provides a key surface boundary condition for investigating many first-order Earth system and geodynamic processes such as climate change, geomagnetic field stability, regional geological and tectonic history, and biological evolution. Over the past decade, the development of the GPlates software led to a resurgence of community
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The NE-SW Sibari fault zone: A seismic hazard source in Ionian Northern Calabria (Italy) Tectonophysics (IF 2.9) Pub Date : 2024-01-16 F.R. Cinti, L. Alfonsi, L. Cucci, D. Pantosti, C. Pauselli, M. Ercoli, C.A. Brunori, G. Cianflone, R. Dominici
A multidisciplinary approach including archaeological, geophysical, and geological/geomorphological surveys provided pieces of evidence that allowed us to identify the Sibari fault zone (SFZ) in Northern Calabria (Italy). The SFZ runs in a ∼ NE-SW direction for a length of ∼18 km from the Ionian coastline to Terranova da Sibari and has an oblique normal-dextral kinematics. The envelope of the SFZ is
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The structure of the mantle transition zone and its implications for mantle upwelling beneath the central Tibetan plateau from triplicated P-waveforms modeling Tectonophysics (IF 2.9) Pub Date : 2024-01-12 Miaomiao Lv, Xiaoming Xu, Zhifeng Ding
The Tibetan plateau is considered as an ideal place for studying the continental collisions, tectonic movements and regional geodynamics. Although multiple episodes of igneous activities in Tibetan plateau have been suggested derived from mantle upwelling, their origins and corresponding geodynamic models remain vigorously debate. This study presents a high-resolution upper mantle velocity model of
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Seismic anisotropy and stress-field variations along the Dead Sea Fault zone in northern Israel Tectonophysics (IF 2.9) Pub Date : 2024-01-06 G. Ben-Dor, I. Kurzon, R. Weinberger, M. Tsesarsky
Geological observations based mainly on stress (strain)-indicating meso-scale markers suggest that the local maximum horizontal compressive stress (SHmax) direction along the Dead Sea Fault (DSF) system in northern Israel changes considerably over short distances from a ∼ N-S, fault-parallel orientation in the south to an ∼E-W, fault-perpendicular orientation in the north. However, the association
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Viscoelasticity modeling of clay minerals by dynamic viscoelasticity measurement and its implications for earthquake faulting Tectonophysics (IF 2.9) Pub Date : 2024-01-08 Tomoya Muramoto, Yoshihiro Ito, Ayumu Miyakawa, Noriyuki Furuichi
Slip on clay fault planes at shallow depths in the seismogenic zone could be controlled by their rheology as well as their frictional properties; however, the rheological nature of clay faults is still an open question. Investigating the rheological properties of clay minerals is essential for understanding and modeling shallow earthquake faulting. Here, we perform dynamic viscoelasticity measurements
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An updated 3D crustal velocity model in Cyprus by non-linear traveltime tomography Tectonophysics (IF 2.9) Pub Date : 2024-01-06 Charalampos Kkallas, Costas Papazachos, Christos Papaioannou
We have used >6000 regional earthquakes in the broader Cyprus island area, with 100,000+ P and S-phases recorded by 26 local seismological stations to obtain a 3D velocity model for the Cyprus area using a non-linear seismic tomography approach. Due to the limited aperture of the recording network, the tomographic model mainly recovers the dominant geophysical features of the upper crust of the Cyprus
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The role of subduction and gravitational collapse in driving extension in the Aegean Sea Tectonophysics (IF 2.9) Pub Date : 2024-01-06 J.M. van der Stoel, V. Strak, W.P. Schellart
The Aegean domain has experienced lithospheric deformation during continuous northward subduction at the Hellenic trench. Early Cenozoic shortening and thickening were followed by late Cenozoic extension and thinning. Thickened lithosphere, in particular its crust, has excess gravitational potential energy, which is thought to promote orogenic collapse (i.e., gravity spreading). In the Aegean domain
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Corrigendum to “Oceanic seismotectonics from regional earthquake recordings: The 4–5°N Mid-Atlantic Ridge” [de Melo, G. W., Mitchell, N. C., Zahradnik, J., Dias, F., & do Nascimento, A. F. (2021). Tectonophysics, 819, 229063]. Tectonophysics (IF 2.9) Pub Date : 2024-01-02 G.W.S. de Melo, Neil C. Mitchell, Jiri Zahradnik
Abstract not available
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Induced seismicity in the Changning salt mining zone, China, could be driven by the pore-pressure diffusion Tectonophysics (IF 2.9) Pub Date : 2023-12-31 Haozhe Yang, Rumeng Guo, Guang Zhai, Jiangcun Zhou, Kun Dai, Yong Zheng, Luning Li, Heping Sun
The detailed mechanism of induced seismicity associated with salt mining remains elusive. Herein we compile the geological, industrial data, and seismic records within the Changning salt mining zone, China, and simulate the changes in crustal stresses and seismicity rate based on the physics-based poroelastic model and rate-and-state earthquake nucleation model. Our models reveal that the regional
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Constraining subducting slab viscosity with topography and gravity fields in free-surface mantle convection models Tectonophysics (IF 2.9) Pub Date : 2023-12-30 Lijun Deng, Ting Yang, Zhongxian Zhao, Meng Zhou
Subducted slabs provide the primary driving force for mantle convection and plate tectonics. The strength of the slab directly controls the transfer of forces between it and the lithospheric plates at the surface. However, slab viscosity constrained by surface topography and gravity data is significantly lower than that suggested by mineral physics laboratory experiments. It is unclear whether the
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Lithospheric underthrusting beneath the northern Eastern Cordillera plateau, Colombian Andes: Insights from analyzing tomographic inversion using local earthquake travel time and gravity data Tectonophysics (IF 2.9) Pub Date : 2023-12-30 D.S. Avellaneda-Jiménez, G. Posada, G. Monsalve, L.S. Wagner
The northern Eastern Cordillera in the Colombian Andes is a wide (~200 km) high-elevation (>2.5 km) subduction-related asymmetric plateau. This plateau is currently subjected to shortening and magmatic addition, and yet the nature of the lowermost crust and its transition to the underlying mantle remains poorly constrained. To improve our knowledge about the structure of the deep crust beneath the
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Identifying the fracture characteristics that control deformation localization and catastrophic failure in fluid-saturated crystalline rocks in upper crustal conditions Tectonophysics (IF 2.9) Pub Date : 2023-12-24 Jessica McBeck, Benoît Cordonnier, Yehuda Ben-Zion, François Renard
Previous studies show that the total volume of fractures increases non-linearly during loading as rocks approach failure in triaxial compression at stress and temperature conditions representative of the upper crust. However, the factors that control the critical volume of fractures or the critical spatial organization of the fracture network that trigger macroscopic failure remain unclear. To identify
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Fault structure and slip mechanics of the 2022 Mw 6.7 Menyuan earthquake revealed by coseismic rupture observations Tectonophysics (IF 2.9) Pub Date : 2023-12-29 Chen Yu, Zhenhong Li, Chuang Song, Bingquan Han, Bo Chen, Xinlong Li, Jianbing Peng
Large and shallow strike-slip earthquakes produce striking ground ruptures, damaging roads and infrastructure but providing great opportunities for examining the fault's structure. After the 2022 Mw 6.7 Menyuan earthquake, we observed abundant surface fractures by a combination of optical remote sensing, radar offset and unmanned aerial vehicle measurements. These fractures reveal a complex fault structure