Tectonophysics最新文献

{"title":"Escape tectonics","authors":"Donna L. Whitney ,&nbsp;Maximiliano Bezada ,&nbsp;Lars N. Hansen ,&nbsp;Christian Teyssier ,&nbsp;Ikuko Wada ,&nbsp;Xin Zhou","doi":"10.1016/j.tecto.2025.231029","DOIUrl":"10.1016/j.tecto.2025.231029","url":null,"abstract":"<div><div>Tectonic escape is the movement of large, strike-slip fault-bounded blocks of lithosphere obliquely away from collision zones. The process of escape has occurred in its current form since the inception of plate tectonics and likely operated as ‘soft escape’ in the hotter, early Earth.</div><div>Escape is driven by collision of a smaller, stronger continent or terrane with a larger, weaker continent. The collider acts as an indenter following consumption of oceanic lithosphere at its leading edge, when collision commences between the indenter and the larger, overriding plate. Owing to heterogeneities in the strength of the escape system and the dynamics of neighboring regions, escape occurs in a preferred direction: escaping lithosphere moves as a wedge-shaped block away from rheologically strong domains and towards weaker, thinner, and/or extending domains.</div><div>Insights from active escape systems and thermo-mechanical models indicate that pre- to syn-collision factors that drive or facilitate escape likely include (1) the presence or development of localized weak zones in the overriding plate and along the indenter-ocean boundary, and (2) the continuation of a driving force for escape following slab break-off downdip of the indenter. In large-scale active escape systems, the bounding strike-slip fault closest to the collisional plate boundary is more seismically active than the escape fault further from the collision zone.</div><div>Escape has been a significant contributor to heat and mass transfer over geological time, and it affects the lithosphere from mantle to surface. It is a mechanism for the formation of new plates from existing ones and has had a major role in the tectonic history of the planet; e.g., during supercontinent assembly and dispersal. Although escape involves profound strain localization along the bounding seismically-active strike-slip faults, the effects of the escape system encompass processes within and beyond the escaping block or plate.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"920 ","pages":"Article 231029"},"PeriodicalIF":2.6,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145613838","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sensitivity analysis of lithospheric convergence velocity in numerical simulations of self-sustained Andean-type subduction","authors":"Jamison Assunção ,&nbsp;Boris J.P. Kaus ,&nbsp;Andrea Piccolo ,&nbsp;Nicolas Riel ,&nbsp;Victor Sacek","doi":"10.1016/j.tecto.2025.231030","DOIUrl":"10.1016/j.tecto.2025.231030","url":null,"abstract":"<div><div>Plate velocities on Earth are all on the order of several centimeters per year, despite large uncertainties in mantle rheology and plate geometry. Here, we conducted a series of 2D self-sustained Andean-type subduction simulations, and investigated how the convergence speed between an oceanic and a continental lithosphere is influenced by plate geometry, lower mantle rheology and the presence of a partial melt zone (PMZ) of relatively low viscosity under the oceanic lithosphere. We ran sets of simulations with different oceanic plate lengths at the surface (OPLS), ranging from 1000 to 5000 km. The overall subduction pattern displayed a relatively rapid acceleration of the subducting plate, followed by a deceleration of approximately the same duration until the plate reached the lower mantle. After this point, the convergence velocity tends to remain stable, varying up to 3.5 cm/yr during subduction across most of the simulated scenarios, supporting the hypothesis of sustained convergence rates for tens of millions of years. We found a linear relationship between the OPLS and the average convergence speed after the plates reach the 660-km discontinuity, with the average convergence velocity decreasing by a rate of approximately 1.3 cm/yr per each additional 1000 km of OPLS. We also tested the sensitivity of the average convergence velocity to variations in lower mantle viscosity and found that decreasing the viscosity from 1.5 × 10²² to 0.5 × 10²² Pa s increased the convergence speed of the subducting plate – after reaching the 660-km discontinuity – by up to a factor of three, hindering convergence stability. By testing the effect of a PMZ modeled via asthenospheric rheology scaling, we found that it does not significantly alter the convergence speed stability or affect the kinematics. Instead, it primarily mimics the behavior of a scenario with a smaller oceanic plate.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"920 ","pages":"Article 231030"},"PeriodicalIF":2.6,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145689916","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Segmented crustal magma reservoirs beneath the Kula Volcanic Province (Western Anatolia) revealed by 3D MT imaging","authors":"Özgür Karaoğlu ,&nbsp;Mehmet Emin Candansayar ,&nbsp;Özcan Özyıldırım ,&nbsp;Ahmet Yıldız ,&nbsp;Can Başaran ,&nbsp;İsmail Demirci ,&nbsp;Yıldırım Dilek","doi":"10.1016/j.tecto.2025.231040","DOIUrl":"10.1016/j.tecto.2025.231040","url":null,"abstract":"<div><div>The Kula Volcanic Province (KVP) in western Anatolia represents the youngest expression of intraplate volcanism within the Aegean extensional province. Yet, the geometry and depth of its magma storage system have remained poorly constrained. Here we present the first three-dimensional magnetotelluric (MT) inversion of the region, based on a dense dataset of 105 stations across ∼60 × 60 km². The results reveal a major mid-crustal reservoir, ∼75 × 20 km in extent and emplaced between 5 and 25 km depth, accompanied by several smaller chambers up to 12 km across. Diapir-like protrusions extend from these bodies to depths of ∼5 km, their NNW–SSE orientation closely aligned with the fault architecture of the Gediz Graben.</div><div>Resistivity values below 5 Ω.m correspond to melt fractions exceeding 6–8 %, providing robust geophysical evidence for significant partial melts in the mid-crust. Petrological constraints indicate primary melts originated from the asthenospheric mantle at 65–90 km depth, while the anomalies resolved here represent secondary crustal reservoirs where ascending basaltic magmas became trapped and stabilised. This dual structure—deep mantle melting coupled with mid-crustal storage—reconciles geochemical constraints with geophysical imaging and highlights the segmented nature of the system, in which one dominant reservoir is compartmentalised by regional fault networks into smaller magma bodies.</div><div>These findings provide the first direct evidence for fault-controlled magma storage beneath the KVP. The identification of shallow intrusions reaching ∼5 km depth explains the localisation of Holocene volcanism, including the ∼4.7 ka Çakallar eruption, and points to a latent volcanic hazard. Placed in a global context, the KVP demonstrates how asthenospheric upwelling, lithospheric thinning, and tectonic segmentation combine to generate compartmentalised magma systems in highly extended continental crust.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"920 ","pages":"Article 231040"},"PeriodicalIF":2.6,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145753514","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Characteristics and generation mechanisms of tremors across a mountain belt","authors":"Yi-Chu Hua ,&nbsp;Kate Huihsuan Chen ,&nbsp;Satoshi Ide ,&nbsp;Pei-Ying Patty Lin","doi":"10.1016/j.tecto.2025.231036","DOIUrl":"10.1016/j.tecto.2025.231036","url":null,"abstract":"<div><div>We analyze ∼7000 tectonic tremors recorded between 2012 and 2022 across five clusters along Taiwan's mountain belt at depths of 30–50 km, providing new insights into slow fault slip within an active continental collision zone. All clusters occur above the Moho, exhibit thrust-dominant focal mechanisms, and are distinct from crustal seismicity. Tidal sensitivity varies spatially, with Clusters 2–5, located in zones of active collision and subduction termination, showing strong modulation (α = 0.53–0.75), while Cluster 1, situated in a post-collisional extensional environment near the Okinawa Trough, exhibits weaker sensitivity (α ≈ 0.3). These variations correlate with differences in tidal stress amplitude and tectonic regime. Moment tensor inversions reveal consistent thrusting styles, but principal stress orientations vary with depth, with σ₁ rotating from vertical in the upper crust to horizontal at tremor depths. This supports a two-layer deformation model shaped by orogenic collapse and lower crustal convergence-parallel shear. Our findings demonstrate that tremor generation in Taiwan reflects evolving stress regimes, fluid-assisted weakening, and structural heterogeneity associated with the interplay of collision, subduction, and back-arc extension. Tremors thus serve as sensitive indicators of deep-seated tectonic processes in dynamically evolving mountain belts.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"920 ","pages":"Article 231036"},"PeriodicalIF":2.6,"publicationDate":"2026-01-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145689915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Paul Tapponnier, deciphering the Earth's crust deformation history in the rocks and landscapes","authors":"A. Replumaz, J.-P. Avouac, M.-L. Chevalier, Y. Klinger, C. Lasserre, P.H. Leloup, J. Liu-Zeng, G. Peltzer, J. van der Woerd, X. Xiwei","doi":"10.1016/j.tecto.2026.231099","DOIUrl":"https://doi.org/10.1016/j.tecto.2026.231099","url":null,"abstract":"","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"66 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2026-01-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"146033598","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Seismogenic and rheological behaviours from time-dependent analysis of earthquake depth distribution in the Corinth Rift","authors":"A. Septier ,&nbsp;J. Déverchère ,&nbsp;J. Perrot ,&nbsp;A. Renouard","doi":"10.1016/j.tecto.2025.231008","DOIUrl":"10.1016/j.tecto.2025.231008","url":null,"abstract":"<div><div>Understanding earthquake depth distribution is critical for improving seismogenesis models. While the spatiotemporal pattern of earthquakes is well studied, transient changes in depth distribution remain poorly explored. In this study, we investigate how crustal rheological parameters influence the depth of earthquakes through time, focusing on the Corinth rift, a well-monitored region experiencing a high-level seismic activity in a homogeneous extensional stress field.</div><div>To calculate crustal yield strength profiles, we compile geophysical and geological data, including heat flow, rock compositions and properties, Moho depth and strain rate. These estimates are then compared to a high-quality 11-year seismic catalogue of the region. An inversion approach is applied to identify crustal layers associated with persistent versus sporadic seismicity defined here instead of the conventional background versus clustered seismicity.</div><div>Our time analysis reveals that the persistent seismicity nicely matches the theoretical brittle–ductile transition and allows us to confidently define the seismogenic thickness, while sporadic seismicity is clustered at depths associated with swarm occurrences. Both distributions are subject to kilometre-scale changes after magnitude 4.0 – 5.5 earthquakes, evidencing a relaxation process even after moderate magnitude events. We conclude that in specific case studies aiming to compare depth distribution and yield strength in the crust, the application of declustering methods may not be optimal for examining the potential rheological controls on earthquake depth distribution and their temporal variations. Instead, the analysis of persistent and sporadic seismicity defined in this study is more accurate and reliable than a declustering approach and offers new and valuable insights for this comparison.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"919 ","pages":"Article 231008"},"PeriodicalIF":2.6,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145611972","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Slow slip events in Mexico: A historical perspective","authors":"Víctor M. Cruz-Atienza ,&nbsp;Sara Franco ,&nbsp;Vladimir Kostoglodov ,&nbsp;Josué Tago ,&nbsp;Ekaterina Kazachkina ,&nbsp;Jorge Real ,&nbsp;Carlos Villafuerte ,&nbsp;Raymundo Plata-Martínez","doi":"10.1016/j.tecto.2025.230978","DOIUrl":"10.1016/j.tecto.2025.230978","url":null,"abstract":"<div><div>This paper introduces a historical catalogue of slow slip events (SSE) for the Mexican subduction zone. The catalogue incorporates all 25 SSEs recorded since they were discovered in 1997. The inversion of GPS data for ten SSEs in Guerrero and five in Oaxaca reveals a clear slow slip segmentation along the Middle America Trench, with slip maxima between 30 and 40 km depth in both regions. SSEs in Guerrero are significantly larger, with <span><math><msub><mi>M</mi><mi>w</mi></msub><mo>=</mo><mn>7.14</mn><mo>±</mo><mn>0.18</mn></math></span> and a duration of <span><math><mn>10.3</mn><mo>±</mo><mn>6.5</mn></math></span> months, whereas in Oaxaca, <span><math><msub><mi>M</mi><mi>w</mi></msub><mo>=</mo><mn>6.84</mn><mo>±</mo><mn>0.16</mn></math></span> with a duration of <span><math><mn>7.0</mn><mo>±</mo><mn>4.3</mn></math></span> months. Such discrepancy results from the subhorizontal geometry of the Cocos Plate in Guerrero, which favors a more extensive SSE habitat. The extent and along-strike segmentation of SSEs appear to be structurally controlled by the subduction of the Orozco and O'Gorman fracture zones. For the inversions, we used consistent GPS data processing that preserves the North American reference frame and the actual SSEs crustal rebounds. All data were curated to minimize seasonal noise, and interpreted throughout the ELADIN inversion method. Five of the six most recent M7+ earthquakes in the region were preceded and most likely triggered by an SSE. This earthquake cluster began in 2012 after a 17-year period of quiescence, during which large SSEs occurred. While the SSEs appear to be necessary for initiating large ruptures, this is not enough until sufficient energy has regionally accumulated in the subduction zone. The Mexican seismic record since 1800 suggests that every ∼15 years the subduction zone reaches a critical state in which SSEs become large earthquake precursors.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"919 ","pages":"Article 230978"},"PeriodicalIF":2.6,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145531304","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Hot orogeny during flat-slab subduction decouples upper plate from basal tractions","authors":"Andrew V. Zuza ,&nbsp;Dominik R. Vlaha ,&nbsp;Terry Lee ,&nbsp;Wenrong Cao","doi":"10.1016/j.tecto.2025.231009","DOIUrl":"10.1016/j.tecto.2025.231009","url":null,"abstract":"<div><div>During plate convergence, shallow subduction or underthrusting of the lower-plate lithosphere beneath an overriding plate often results in far-field intraplate deformation, as observed in the Late Cretaceous–Paleogene North American Laramide or Cenozoic Himalayan-Tibetan orogen. Perplexingly, during this shallow-slab process, wide expanses of crust between the plate boundary and intraplate orogen do not experience significant synchronous deformation. These apparently undeformed crustal regions may reflect (1) a strong, rigid plate, (2) increased gravitational potential energy (GPE) to resist shortening and uplift, or (3) decoupling of the upper-plate lithosphere from any basal tractions. Here we review the geology of three orogens that formed due to flat slab subduction or underthrusting: the Himalayan-Tibetan, Mesozoic southeast China, and Laramide orogens. These orogens all involved intraplate deformation &gt;1000-km from the plate boundary, large regions of negligible crustal shortening between the plate-boundary and intra-plate thrust belts, hot crustal conditions within the hinterland regions, and extensive upper-plate porphyry copper mineralization. A hot and weak hinterland is inconsistent with it persisting as an undeformed rigid block. GPE analysis suggests that hinterland quiescence is not uniquely due to thickened crust and elevated GPE, as exemplified by shallow marine sedimentation with low surface elevations in SE China. Comparison of these intracontinental orogens allows us to advance a general model, where hot orogenic hinterlands with a weak, mobile lower crust allow decoupling from underlying basal tractions exerted from flat-slab or underthrusting events. This hypothesis suggests that basal tractions locally drive intraplate orogens, at least partially controlled by the strength of the upper-plate lithosphere.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"919 ","pages":"Article 231009"},"PeriodicalIF":2.6,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145560229","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A reconstruction of the last 50 My of South-East Asia's tectonic history","authors":"Bernard Montaron ,&nbsp;Paul Tapponnier ,&nbsp;Anne Briais ,&nbsp;Philippe Hervé Leloup","doi":"10.1016/j.tecto.2025.230981","DOIUrl":"10.1016/j.tecto.2025.230981","url":null,"abstract":"<div><div>We present 2-D reconstructions representing the extended version of the continental extrusion model, on which late Paul Tapponnier worked with the co-authors, and which provides a coherent mechanism for the origin of most major faults and basins in South-East Asia, in the last 50 My. In that model, the northward progression of India within Asia induces the nucleation and motion along a series of major strike-slip faults allowing the extrusion to the southeast of slices of Sundaland. Along the faults, and at their tips, pull-apart basins form, corresponding to the basins around Sundaland. From ~46 Ma, a first NNE trending right-lateral fault opens the Mergui basin. From ∼42 until 32 Ma, five NW-SE left-lateral faults activate from SW to NE extruding blocks toward the SE, allowing the formation of the Pattani, Malay, Tonle Sap, Yinggehai, and Natuna-Rajang pull-apart Basins, and terminating in the Makassar, Nam Con Son, Cuu Long Basins and the South China Sea. The faults are the Three Pagodas, Wang Chao, Tonle Sap, and the Ailao Shan - Red River shear zones. After ∼15 Ma extrusion stops in Sundaland and migrates further north. A major tectonic reorganization follows on land with offshore inversion of motion of several microplates, initiating a thrust of Borneo over the southern margin of the South China Sea, forming a sedimentary prism often misinterpreted as evidence for subduction of a proto-South China Sea. We discuss how the motion on strike-slip faults resulting from India-Asia collision explains most of the rifting and seafloor spreading in the region.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"919 ","pages":"Article 230981"},"PeriodicalIF":2.6,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145434700","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Prolonged early cretaceous crustal extension in the eastern Lhasa Terrane: A multiphase magmatic record (∼134–103 Ma) from the Bomi-Chayu batholith","authors":"Yihu Zhang ,&nbsp;Dongliang Liu ,&nbsp;Xuxuan Ma ,&nbsp;Haibing Li ,&nbsp;Guilong Mi ,&nbsp;Xunzhang Zhu ,&nbsp;Wang Li","doi":"10.1016/j.tecto.2025.231011","DOIUrl":"10.1016/j.tecto.2025.231011","url":null,"abstract":"<div><div>The Early Cretaceous (133–109 Ma) Bomi-Chayu batholith in the easternmost Lhasa terrane provides key insights into crustal growth and tectonic evolution, yet its petrogenesis and geodynamic setting remain contentious. Integrated petrographic, geochronological, geochemical, and isotopic analyses of three granitic suites identify crystallization ages of 134.3 Ma, 116.7–118.0 Ma, and 102.6–102.8 Ma, extending the known duration of regional magmatism. The ∼134 Ma and ∼103 Ma granites are classified as A2-type, formed under high-temperature, low-pressure settings. The ∼134 Ma biotite monzogranites show enriched isotopic compositions, suggesting derivation from ancient crustal sources. In contrast, the ∼103 Ma monzogranites exhibit decoupled ε_Nd(t)-ε_Hf(t) values, consistent with dehydration remelting of ancient crust. The ∼117 Ma granitoid suit is synchronous with a regional magmatic flare-up. The granodiorites in this stage display I-type affinities, with enriched Sr-Nd but relatively depleted zircon Hf isotopes. Geochemical and isotopic trends indicate hybridization between mantle-derived melts (represented by coeval gabbrodiorites and basalts) and crustal components (represented by coeval biotite monzogranites), followed by fractional crystallization and minor upper-crustal contamination. Magmatic types and isotopic compositions correlate the Bomi-Chayu batholith with the magmatic belt in the central Lhasa terrane. The two-stage A-type granites, together with synchronous I-S-type granitoids and bimodal volcanism, provide robust evidence for prolonged crustal extension in the eastern Lhasa terrane (at least the Bomi-Chayu area) during ∼134–103 Ma. We interpret this extensional regime as the result of slab rollback of the northward subducted Neo-Tethyan oceanic lithosphere.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"919 ","pages":"Article 231011"},"PeriodicalIF":2.6,"publicationDate":"2026-01-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145567543","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"地球科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}