-
Multi-stage tectonic evolution of the Tatra Mts recorded in the para- and ferromagnetic fabrics Tectonophysics (IF 2.9) Pub Date : 2024-05-06 Dorota Staneczek, Rafał Szaniawski, Martin Chadima, Leszek Marynowski
The Tatra Mts form the highest part of the Carpathian mountain chain; however, their tectonic and thermal evolution is still debatable. Previous magnetic fabric studies have primarily focused on the crystalline basement and its autochthonous cover. We investigate the magnetic fabrics of Cretaceous marly limestones from a Mesozoic nappe unit and post-thrusting Oligocene shales and mudstones to unravel
-
Fairweather transform boundary Oligocene to present orogenesis: Fairweather Range vertical extrusion and rotation of the Yakutat microplate at ca. 3 Ma Tectonophysics (IF 2.9) Pub Date : 2024-05-06 Jeff Apple Benowitz, Richard Lease, Peter J. Haeussler, Terry Pavlis, Michael Everett Mann
Oblique-slip along transform fault boundaries is often partitioned between a strike-slip system and thrust faults that accommodate contraction. However, topography along the Yakutat-North American transform (Fairweather fault), is asymmetric with low-terrain above active thrusts on the western, Yakutat side of the transform and high topography on the continental side with peaks >4500 m (Mount Fairweather:
-
Tomographic imaging of South Rewa basin, Central India: Implications of Gondwana rifting and Late Cretaceous volcanism Tectonophysics (IF 2.9) Pub Date : 2024-05-03 Laxmidhar Behera, S.P. Panigrahi, G.S.P. Rao, M.S. Reddy, P. Karuppannan, N. Premkumar, Sudeshna Moharana
-
Structural anatomy of the Munsiari and Vaikrita thrust zones, Garhwal Himalayas, India Tectonophysics (IF 2.9) Pub Date : 2024-05-01 Rahul Dixit, Deepak C. Srivastava, Gargi G. Deshmukh, Arvind K. Jain
The Munsiari and Vaikrita thrusts are crucial to understanding the geodynamic evolution of the Himalayas. However, the structural architecture and kinematic evolution of these thrusts and associated deformation zones are still poorly understood. Furthermore, the existing criteria for field identification of the Vaikrita Thrust are varied and ambiguous. We address these issues through extensive large-scale
-
The evolution of stresses and shear resistance on rough faults at large slip Tectonophysics (IF 2.9) Pub Date : 2024-04-30 Lior Wise, Yuval Tal
-
Brittle sedimentary strata focus a multimodal depth distribution of seismicity during hydraulic fracturing in the Sichuan Basin, Southwest China Tectonophysics (IF 2.9) Pub Date : 2024-04-26 Mengke An, Derek Elsworth, Fengshou Zhang, Rui Huang, Junlun Li, Zhengyu Xu, Zhen Zhong, Manchao He
The number of background earthquakes ( ≥ 0) in the southern Sichuan basin, southwest China, has increased thirtyfold as a result of hydraulic fracturing. Background events are originally deep (4–6 ) within the sedimentary section but build into a multimodal distribution both at depth and in the shallow stimulated reservoir (2–4 ) - representing a counterpoint to the usual triggering of seismicity on
-
Local earthquake tomography of the Aegean crust: Implications for active deformation, large earthquakes, and arc volcanism Tectonophysics (IF 2.9) Pub Date : 2024-04-24 P. Ranjan, K.I. Konstantinou
Three-dimensional velocity models can enable accurate earthquake location, improved seismic hazard assessment, and can enhance our understanding of geodynamic processes. This is particularly true for areas such as the Aegean, where the crust is marked by active volcanoes as well as shear and rift zones, all of which make this region highly heterogeneous. This work describes the application of local
-
Magnitudes and surface rupture lengths of paleo-earthquakes at the NW-part of the Peel Boundary fault zone, Roer Valley Rift System Tectonophysics (IF 2.9) Pub Date : 2024-04-22 R.T. Van Balen, R.E. Lapperre, H.A.G. Woolderink, J. Wallinga, C. Kasse
The Peel Boundary Fault zone (PBFZ) is the 125 km long, seismically active, northern bounding fault zone of the Roer Valley Rift System (RVRS). The last damaging earthquake along the PBFZ was the Roermond earthquake of 1992. It had a magnitude of Mw 5.3 and no surface rupture. Previous results from two trenching studies located in the central and southeastern parts of the PBFZ provided evidence for
-
Fault reactivation linked to rapid ice-mass removal from the Southern Patagonian Icefield (48–52°S) Tectonophysics (IF 2.9) Pub Date : 2024-04-21 Jean-Baptiste Ammirati, Kellen Azúa, Francisco Pastén-Araya, Andreas Richter, Douglas A. Wiens, María Constanza Flores, Sergio Ruiz, Pedro Guzmán-Marín, Federica Lanza, Gerd Sielfeld
The Southern Patagonian Icefield (SPI) lies above an area of slow convergence between Antarctic and South-America plates, where limited seismicity is recorded by global and regional seismic networks. To understand the seismic behavior of this zone, we analyze two years of continuous broad-band data recorded by 27 seismometers, deployed around the SPI. Substantial ice loss coupled with the unusually
-
Electrical conductivity of antigorite–olivine aggregates under high temperature and pressure: Implications for the water content in mantle wedges Tectonophysics (IF 2.9) Pub Date : 2024-04-21 Libing Wang, Duojun Wang
Antigorite–olivine aggregates were synthesized to serve as representative lithologies of subduction zones, which often suffered serpentinization due to the hydration of the mantle wedge. The electrical conductivities (EC) of antigorite–olivine aggregates with different antigorite proportions before and after dehydration at 2.0 GPa were measured. An increase in electrical conductivity prior to antigorite
-
The remarkable parallels between the North East Atlantic and Arctic regions Tectonophysics (IF 2.9) Pub Date : 2024-04-18 Gillian R. Foulger, Anatoly M. Nikishin, Ksenia F. Aleshina, Elizaveta A. Rodina
Geological understanding of the NE Atlantic and Arctic regions has increased greatly over the last two decades, revealing remarkable similarities. Continental extension in both regions onset during pausing or cessation of adjacent orogenies – the Verkhoyansk-Chukotka and Alpine orogenies – which relaxed compressional stresses and permitted extension. Severe extension accompanied by high-volume magmatism
-
Effects of crustal rheology and fault strength on the formation of the Qaidam Basin: Results from 2-D mechanical modeling Tectonophysics (IF 2.9) Pub Date : 2024-04-18 Chao Zhou, Jiankun He, Xiaojie Zhu, Xinguo Wang, Weimin Wang
The Cenozoic Qaidam Basin on the northern Tibetan Plateau is bounded by the foreland thrust belts of the East Kunlun Mountains to the south and Qilian Mountains to the north. In this basin, the maximum thickness of the accumulated sedimentary strata is ∼17 km near the geographic center of the basin. Such a basin architecture challenges the classic foreland-basin deformation model, wherein substantial
-
Geological interpretation of wide-angle seismic reflection/refraction profiles along the Scotian margin and across Nova Scotia, Canada Tectonophysics (IF 2.9) Pub Date : 2024-04-16 H. Ruth Jackson, Deping Chian, Thomas Funck, Sandra M. Barr, John Shimeld, Chris E. White, Matthew Salisbury
Two wide-angle seismic reflection/refraction profiles were acquired to determine the velocity characteristics of the Meguma terrane and adjacent Avalonia northeast of the Cobequid-Chedabucto Fault Zone (CCFZ) in eastern Canada. Line 99–1 is located along the Scotian margin whereas line 99–2 crosses the Scotian margin and onshore Nova Scotia and extends into the Gulf of St. Lawrence. Velocity models
-
Dynamic processes of the Southeast (SE) Asia convergent system and its impact on continental deformation and marginal basin formation: Preface Tectonophysics (IF 2.9) Pub Date : 2024-04-16 Weiwei Ding, Xiaolong Huang, Liang Zhao, Jonny Wu, Carla B. Dimalanta, Manuel Pubellier, Fei Wang
-
Advances in heat flow studies and thermal structure of the lithosphere Tectonophysics (IF 2.9) Pub Date : 2024-04-12 Massimo Verdoya, Graeme Beardsmore, Robert Harris
-
Structural architecture and tectonic evolution of the Campania-Lucania arc (Southern Apennines, Italy): Constraints from seismic reflection profiles, well data and structural-geologic analysis Tectonophysics (IF 2.9) Pub Date : 2024-04-12 Luigi Ferranti, Filippo Carboni, Assel Akimbekova, Maurizio Ercoli, Simone Bello, Francesco Brozzetti, Alberto Bacchiani, Giovanni Toscani
This paper sheds light on the structural architecture and tectonic evolution of the Campania-Lucania segment of the Southern Apennines orogen through an integrated analysis of mostly unpublished and partly published (CROP-04 line) seismic reflection profiles, exploratory well logs and geologic-structural relations among the lithostratigraphic units of this region. The pre-orogenic Mesozoic-Neogene
-
Cretaceous extensional and contractional stages in the Colombian Andes unraveled by a source-to-sink geochronological and thermochronological study in the Upper Magdalena Basin Tectonophysics (IF 2.9) Pub Date : 2024-04-03 L. Calderon-Diaz, S. Zapata, A. Cardona, M. Parra, E.R. Sobel, A.M. Patiño, V. Valencia, J.S. Jaramillo-Rios, J. Glodny
Extensional and flexural basins can evolve through multiple stages under the same plate tectonic regime over tens of millions of years. The Cretaceous tectonic evolution of the Colombian Andes is characterized by shifts between contractional and extensional tectonics. The upper plate response to these changes is recorded in the Cretaceous sedimentary rocks along the Western, Central, and Eastern cordilleras
-
Two-stage expansion of the South Qilian Shan during the mid-Miocene: Insights from provenance analysis in the northern Qaidam Basin, NW China Tectonophysics (IF 2.9) Pub Date : 2024-04-02 Wen-jun Zheng, Bing-xu Liu, Lei Duan, Wei-tao Wang, Xin Sun
-
Crustal architecture and tectonic development of western Queensland, Australia, based on deep seismic reflection profiling: Implications for Proterozoic continental assembly and dispersal Tectonophysics (IF 2.9) Pub Date : 2024-04-02 Russell J. Korsch, Michael P. Doublier, Dominic D. Brown, Janelle M. Simpson, Andrew J. Cross, Ross D. Costelloe, Wenping Jiang
Interpretation of 2014–2015 deep crustal seismic reflection and magnetotelluric data has revised the architecture and geodynamic framework of western Queensland, with implications for the assembly and dispersal of the supercontinents Nuna, Rodinia and Gondwana. In the Mount Isa Province, crustal-scale boundaries of the Leichhardt River Domain, Kalkadoon-Leichhardt Domain and Eastern Subprovince are
-
Segmentation of the Tashkurgan normal fault in the eastern Pamir: Insights from geomorphology and thermochronology and implications for fault-slip transfer Tectonophysics (IF 2.9) Pub Date : 2024-04-02 Shenqiang Chen, Maria Giuditta Fellin, Sean D. Willett, Colin Maden, Marcel Guillong, Hanlin Chen, Yaguang Chen, Rong Yang
At the northwestern end of the India–Asia collision zone, in the eastern Pamir interior, the Kongur Shan extensional system extends for ∼250 km as a composite system of normal faults. As the southernmost segment of the extensional system, the Tashkurgan fault can be divided into a northern and southern segment by the intersection of the Tahman and Tashkurgan faults. To evaluate the tectonic activity
-
Evidence of crustal flexure induced by fluvial incisions Tectonophysics (IF 2.9) Pub Date : 2024-03-31 Felipe Baiadori, Victor Sacek, Bernardo T. Freitas, Renato P. Almeida
Fluvial erosion of the Earth's crust creates valleys ranging from hundreds of meters to a few kilometers wide. The resulting unloading is supported by the flexural rigidity of the continental lithosphere. As a result, the bending of the lithosphere around individual river valleys is usually imperceptible in the landscape, specially in tectonically quiescent environments. However, in the Recôncavo-Tucano-Jatobá
-
Structure and dynamics of southern Mariana margin: Constraints from seismicity, tomography and focal mechanisms Tectonophysics (IF 2.9) Pub Date : 2024-03-30 Xinyang Wang, Shaohong Xia, Hongfeng Yang, Han Chen, Dapeng Zhao
The southern Mariana margin is a tectonically distinctive and rapidly deforming region with the world deepest trench and unusual deformation and magmatism. However, its related deep structure and dynamics are still poorly understood. In this study, we determine robust 3-D P and S wave velocity models down to 130 km depth beneath the southern Mariana margin by using arrival-time data of local earthquakes
-
Lefkos Shear Zone of Karpathos, Greece (SE Aegean): Pleistocene to recent transtensional forearc basin and paleoseismicity Tectonophysics (IF 2.9) Pub Date : 2024-03-29 Karen L. Kleinspehn
-
N-S variations of crustal structure beneath the central Tarim Basin from joint inversion of receiver functions, ambient seismic noise surface wave dispersion, and magnetotelluric data Tectonophysics (IF 2.9) Pub Date : 2024-03-29 Miao Peng, Handong Tan, Changhong Lin, Shaoqian Hu, Pingping Wu, Lehong Xu, Chonglong Wang, Yifan Liu, Lihui Wang, Bohao Li
To understand the complex crustal structure beneath the central Tarim Basin, we perform joint inversions of P-wave receiver functions, ambient seismic noise Rayleigh wave dispersion, and magnetotelluric data along a nearly N-S oriented linear array. In this contribution, we present a multistep flowchart to enhance the efficiency and reliability of the joint inversion. Synthetic examples indicate that
-
Seismic evidence of a plume conduit in a metasomatized lithosphere beneath the Barmer rift in northwestern India Tectonophysics (IF 2.9) Pub Date : 2024-03-27 D.S. Saju, G. Mohan
Teleseismic tomography was done to investigate the lithosphere beneath northwestern India which was affected by several magmatic episodes since Neoproterozoic times. Broadband stations were deployed in phases at 29 locations in an area of 300 km × 300 km in northwestern India. About 8000 high-quality P phases corresponding to 934 events were used. Relative residuals estimated through adaptive stacking
-
3D geometrical modelling of the non-cylindrical Vélodrome Miocene fold in the southwestern Alps Tectonophysics (IF 2.9) Pub Date : 2024-03-26 Agathe Faure, Nicolas Loget, Laurent Jolivet, Charles Gumiaux, Cécile Allanic, Jean-Paul Callot, Gautier Laurent, Nicolas Bellahsen, Myette Guiomar
Fold geometries and kinematics within foreland basins is a major issue for understanding the late evolution of thrust fronts. In the foreland of the southwestern Alps, the Vélodrome complex fold involves the whole Tertiary series which have recorded the evolution of the alpine front. From a geometrical and kinematic point of view, the Vélodrome is classically described as a recumbent Mio-Pliocene syncline
-
Deformation microstructures of blueschists in Alpine Corsica, France, and implications for seismic anisotropy and the low-velocity layer in subducting oceanic crust Tectonophysics (IF 2.9) Pub Date : 2024-03-26 Seungsoon Choi, Yong Park, Seokyoung Han, Sejin Jung, Olivier Fabbri, Haemyeong Jung
Understanding the deformation microstructures and seismic properties of blueschists is important for interpreting the seismic anisotropy at the top of subducting oceanic crust. The deformation microstructures and seismic properties of epidote blueschist, epidote-lawsonite blueschist, and lawsonite blueschist from Alpine Corsica, France, were studied using electron backscatter diffraction mapping and
-
Deep lithosphere-coupled surface deformation beneath Southeastern Brazil from amphibious magnetotellurics Tectonophysics (IF 2.9) Pub Date : 2024-03-26 Artur S. Benevides, Ved P. Maurya, Sergio L. Fontes
The southeastern Brazilian onshore-offshore margin and underlying lithosphere are investigated by three-dimensional magnetotelluric imaging using 202 high-quality broadband and long-period amphibious MT-dataset, orthogonally traversing the regional surface deformation hills of Serra da Mantiqueira and Serra do Mar, as well as the coast-parallel onshore-offshore lineaments. Three-dimensional conductivity
-
Kinematic modeling of neotectonic thrusts at the Andean orogenic front (southern Precordillera, Argentina) Tectonophysics (IF 2.9) Pub Date : 2024-03-26 Andrés D. Richard, Carlos H. Costa, Laura B. Giambiagi, Julieta Suriano
The south-central Andes located between 32°-33° S are considered to be a transitional zone between the flat-lying and the normal subduction zones of the Nazca Plate. The active mountain-building processes are mainly concentrated between the Andean eastern foothills and the adjacent broken foreland, as highlighted by crustal seismicity, historic destructive earthquakes, and Quaternary-active contractional
-
Deformation-induced, retrograde transformation of kyanite to andalusite: An example of felsic granulite in the southern Bohemian Massif Tectonophysics (IF 2.9) Pub Date : 2024-03-26 Takuro Yoshioka, Kyuichi Kanagawa, Yoshikuni Hiroi, Takao Hirajima, Martin Svojtka, Tomokazu Hokada, Simon R. Wallis, Takayoshi Nagaya, Akira Miyake
Detailed microstructural, microfabric and chemical analyses of felsic granulite within and around a ductile shear zone at the Plešovice quarry in the southern Bohemian Massif revealed deformation-induced, retrograde transformation of kyanite to andalusite. Although andalusite is absent outside the shear zone, its fraction among AlSiO polymorphs significantly increases up to ∼59% inside the shear zone
-
Lithospheric- and crustal-scale controls on variations in foreland basin development in the Northern Alpine Foreland Basin Tectonophysics (IF 2.9) Pub Date : 2024-03-25 Lucas H.J. Eskens, Nevena Andrić-Tomašević, Peter M. Süss, Matthias Müller, Rolf Herrmann, Todd A. Ehlers
The Northern Alpine Foreland Basin ( Molasse Basin) developed due to flexural subsidence from slab- and topographic loading during continental collision between the Adriatic and European plates. Previous studies highlight a diachronous transition from underfilled- to overfilled conditions in the Molasse Basin in response to orogen-parallel variations in flexural subsidence and sediment supply. In this
-
A large fault partially reactivated during two contiguous seismic sequences in Central Italy: The role of geometrical and frictional heterogeneities Tectonophysics (IF 2.9) Pub Date : 2024-03-21 M.E. Locchi, L. Scognamiglio, E. Tinti, C. Collettini
Earthquakes can rupture multiple fault segments as well as faults with complex geometry, or heterogeneous pre-stress and frictional properties. These observations have been documented mainly for moderate-to-large earthquakes by inverting geodetic and seismic data and by studying the influence of fault orientation and rheology within the regional stress field.
-
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
-
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
The coseismic and postseismic slip associated with the 2021 M 8.2 Chignik, Alaska earthquake is imaged using the geodetic modeling method. Further, the spatio-temporal evolution of afterslip and aftershocks (0–60 days) is also investigated based on the postseismic deformations captured by Global Navigation Satellite System (GNSS) sites in this study. The coseismic slip is mainly concentrated at depths
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
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
-
-
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
-
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
-
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
-
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
-
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
-
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