Tectonophysics最新文献

{"title":"Lithospheric temperature response to asthenosphere updoming and the upper mantle-crustal magmatic underplating in the Western Ohře (Eger) Rift area, Czechia","authors":"Jan Šafanda ,&nbsp;Vladislav Rapprich ,&nbsp;Tomáš Fischer ,&nbsp;Václav Špillar ,&nbsp;Pavla Hrubcová ,&nbsp;Petr Dědeček","doi":"10.1016/j.tecto.2025.230836","DOIUrl":"10.1016/j.tecto.2025.230836","url":null,"abstract":"<div><div>The Western Ohře (Eger) Rift is characterized by frequent earthquake swarms, elevated CO₂ emissions, and Pleistocene volcanism. Understanding the lithospheric temperature is an essential for integrating these phenomena within a broader geodynamic context. In order to contribute to these research goals, we modelled thermal evolution of the region using an axisymmetric geothermal model and numerically solved the transient heat conduction equation. The simulation begins at 35 Ma, when the asthenosphere uplifted from 100 km to 75 km depth within a 90-km diameter-wide region. This updoming was followed by two episodes of basaltic underplating at depths of 30–33 km during 15–10 Ma and 5–1 Ma. We modelled the underplating as a sequence of ∼100 m thick intrusions, 30 km in diameter, emplaced at 1 Myr intervals. Each intrusion released latent heat of crystallization between the liquidus (1,387 °C) and solidus (720 °C) temperatures. The modelled lithospheric temperatures indicate that the 300 °C isotherm, often marking the brittle-ductile transition, is located at ∼11 km depth, consistent with the lower extent of the local swarm seismicity range (6.5–11 km). The base of the magmatic underplating remains just above the solidus, suggesting the presence of partially molten material. The residual melt may contribute to the ongoing CO₂ emissions observed in the area.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"911 ","pages":"Article 230836"},"PeriodicalIF":2.7,"publicationDate":"2025-06-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144515669","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":"Frictional properties of serpentine gouge under high pore-fluid pressure and low effective normal stress conditions","authors":"Shimin Liu ,&nbsp;Lei Zhang ,&nbsp;Changrong He ,&nbsp;Xi Ma","doi":"10.1016/j.tecto.2025.230835","DOIUrl":"10.1016/j.tecto.2025.230835","url":null,"abstract":"<div><div>Serpentine minerals exist pervasively near the subduction mantle wedge. Due to their distinct physical and chemical properties, they have the potential to significantly impact the frictional behavior and stability of subduction fault zones. Here we investigated the frictional properties of an antigorite-lizardite mixture gouge under hydrothermal conditions with an effective normal stress of 30 MPa, a pore fluid pressure of 100 MPa, and temperatures ranging from 100 °C to 500 °C. To explore the velocity dependence of frictional strength, the loading rate is switched between 0.04, 0.2, and 1.0 μm/s. The results show that the friction coefficient of the gouge decreases systematically with temperature, with values ranging from 0.75 to 0.36. The thermal weakening of the gouge friction can be attributed to enhanced intergranular pressure solution processes activated at the relatively high fluid pressure. Stable velocity-strengthening behavior was observed in most cases. However, velocity-weakening behavior, evidenced by sustained oscillation, was found at 300 °C and 400 °C at the slowest loading rate (0.04 μm/s), with a transition to velocity-strengthening behavior at higher loading rates. Our results further suggest that, under the high pore fluid pressure and temperature conditions characteristic of the subduction zone mantle wedge, the nucleation of unstable slip at low slip rates can decelerate as fault slip accelerates into the velocity-strengthening regime, ultimately terminating as a slow-slip event. These insights contribute to a better understanding of the processes underlying slow slip events in subduction zones.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"911 ","pages":"Article 230835"},"PeriodicalIF":2.7,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335615","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":"New GPS-derived velocity field for Marmara region: Implications for the kinematics along the North Anatolian Fault Zone","authors":"Ali Özkan ,&nbsp;Hasan Hakan Yavaşoğlu ,&nbsp;İbrahim Tiryakioğlu ,&nbsp;Göksu Uslular ,&nbsp;Mustafa Fahri Karabulut ,&nbsp;Patrice Ulrich ,&nbsp;Frédéric Masson","doi":"10.1016/j.tecto.2025.230828","DOIUrl":"10.1016/j.tecto.2025.230828","url":null,"abstract":"<div><div>The North Anatolian Fault Zone (NAFZ) is a major strike-slip fault system accommodating the relative motion between the Anatolian and Eurasian plates, extending approximately 1200 km from eastern Turkey to the Aegean Sea in the west. Despite several large earthquakes along the NAFZ during the last century, the northern strand beneath the Sea of Marmara has been seismically silent since the 1766 events, raising concerns about future seismic hazards. The ∼160-km-long seismic gap, bounded by the 1912 and 1999 ruptures, is considered to have a potential nucleation for a future M &gt; 7 earthquake due to significant strain accumulation over the past two centuries.</div><div>While previous studies have provided valuable insights into the geometry and deformation patterns of the NAFZ in the Marmara region, discrepancies remain regarding the fault coupling and slip behavior of its submarine segments. The sparse onshore geodetic data, particularly on the northern side of the fault, and limited offshore geodetic observations hinder the ability to entirely resolve fault kinematics and slip characteristics along the northern strand in the Sea of Marmara.</div><div>To address these limitations, we established a high-spatial-resolution GPS network with both permanent stations and benchmarks, enabling a better understanding of the submarine segment's behavior and seismic potential by investigating the interseismic deformations along the NAFZ segments beneath the Sea of Marmara. Using the recent interseismic GPS velocities, we applied a block model inversion to estimate fault slip rates and coupling ratios along the northern strand of the NAFZ. The checkerboard tests indicate the robustness of our results.</div><div>This study provides new geodetic constraints that improve our understanding of the seismic potential of the NAFZ beneath the Sea of Marmara, offering critical insights for seismic hazard mitigation in the İstanbul metropolitan area.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"911 ","pages":"Article 230828"},"PeriodicalIF":2.7,"publicationDate":"2025-06-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335567","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":"Break-off and stagnation of the subducting Nazca slab in the mantle transition zone beneath West-Central South America","authors":"Kailun Ba ,&nbsp;Jianping Huang ,&nbsp;Youqiang Yu ,&nbsp;Jianguo Song ,&nbsp;Sanzhong Li ,&nbsp;Cong Shen ,&nbsp;Lin Liu","doi":"10.1016/j.tecto.2025.230834","DOIUrl":"10.1016/j.tecto.2025.230834","url":null,"abstract":"<div><div>The eastward subduction of the Nazca Plate beneath the South American continent forms the Andean subduction zone, while deep mantle dynamics associated with slab-entrained mantle flow, thermal structure, and geometry of the subducted slab remain debated. In this study, we have utilized a total of 49,237 receiver functions recorded by 669 stations in West-Central South America to map the variations in topography of the mantle transition zone (MTZ) discontinuities and elucidate their causes. Simultaneous depressions in apparent depths of MTZ discontinuities beneath the northern Andean Orogen are attributed to subduction-driven entrained mantle flow that generates low seismic velocity anomalies within the upper mantle. In contrast, joint analysis of detected MTZ thinning and high-velocity anomalies under the Andean Orogen (south of 26^o S) reveals a slab break-off segment within the MTZ. The uplift of the 410 km discontinuity confirms penetration of the subducting Nazca slab into the MTZ. Notably, significant MTZ thickening (primarily engendered by the depression of the 660 km discontinuity) is deciphered under the Central South American continent and indicates stagnation of subducted slab segments at the bottom of the MTZ.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"911 ","pages":"Article 230834"},"PeriodicalIF":2.7,"publicationDate":"2025-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335616","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":"Grenvillian-age deep crustal thrusting, terrane juxtaposition and subduction polarity reversal from the Eastern Ghats Belt, India and its tectonic implications","authors":"Shuvankar Karmakar ,&nbsp;Gautam Ghosh ,&nbsp;Sankar Bose ,&nbsp;Sneha Mukherjee ,&nbsp;Dyuti Prakash Sarkar ,&nbsp;Nilanjana Sorcar ,&nbsp;Kaushik Das","doi":"10.1016/j.tecto.2025.230833","DOIUrl":"10.1016/j.tecto.2025.230833","url":null,"abstract":"<div><div>The Proterozoic Eastern Ghats Belt (EGB) represents an arcuate orogenic belt along the east coast of India. Its western boundary is marked by a thrust-cum subduction zone system along which granulite facies rocks of the EGB were thrust over the cratonic rocks while its northern margin with the craton is marked by several crustal-scale shear zones of unresolved kinematic status. The present study generates new structural, kinematic and age data from the Mahanadi Shear Zone (MSZ) of the EGB northern margin that unveils a hitherto undisclosed chronicle of deep crustal thrusting and terrane amalgamation. Correlation of our earlier reported (M₁) high-pressure metamorphism (ca. 980–960 Ma) and clockwise pressure-temperature path in the MSZ with the presently reported deep crustal thrusting (600–800 °C) at ca. 950–900 Ma led us to infer that the MSZ represents a Grenvillian-age oblique collisional zone signifying northerly underthrusting of the Phulbani domain below the Angul-Tikarpada domains at ca. 980–900 Ma. The proposed SW directed thrusting along MSZ is at variance with the earlier reported coeval NW directed thrusting along the EGB western margin. This new report thus warrants subduction polarity reversal along the two margins of the arcuate EGB orogenic front at the same time frame. The difference in displacement velocity vectors along the two margins was resolved via combined movements on the orogen sub-parallel dextral-slip Koraput Shear Zone and the orogen transverse sinistral-slip Nagavalli-Vamshadhara Shear Zone system. The proposed tectonic model visualises the arcuate shape of the EGB orogenic front as a primary structure inherited from the original craton margin configuration.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"911 ","pages":"Article 230833"},"PeriodicalIF":2.7,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335617","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":"Subsurface characterization of crystalline rocks at the Einstein Telescope candidate site (Italy): Insights from seismic tomography, geoelectrical and morphostructural analyses","authors":"F. Villani ,&nbsp;S. Maraio ,&nbsp;L. Improta ,&nbsp;P.M. De Martini ,&nbsp;D. Cavallaro ,&nbsp;M. Firetto Carlino ,&nbsp;C.A. Brunori ,&nbsp;V. Longo ,&nbsp;L. Casini ,&nbsp;M.C. Caradonna ,&nbsp;C. Zei ,&nbsp;S. Rapisarda ,&nbsp;G. Oggiano ,&nbsp;C. Giunchi ,&nbsp;G. Saccorotti ,&nbsp;M. Coltelli ,&nbsp;D. D'Urso ,&nbsp;L. Naticchioni ,&nbsp;F. Ricci ,&nbsp;G. Schillaci ,&nbsp;G.L. Cardello","doi":"10.1016/j.tecto.2025.230830","DOIUrl":"10.1016/j.tecto.2025.230830","url":null,"abstract":"<div><div>The Einstein Telescope (ET) will be the first European underground observatory of gravitational waves. The observatory's interferometric detectors will be housed in a large underground infrastructure,which necessitates a stable and quiet geological context. We present the results of a geognostic campaign conducted for the Italian candidate site in Sardinia, during which two ∼270 m-deep boreholes were drilled in granites and orthogneiss at two sites that are possible locations of the ET infrastructure. We acquired high-resolution, dense seismic and electrical resistivity tomography (ERT) profiles to complement borehole data, constraining the thickness of the weathered layer and characterizing the rock properties in terms of intact versus fractured zones down to depths of 100–240 m. At depths &gt;50 m, we observed high P-wave velocity (Vp ∼ 5000–5500 m/s, while very high Vp (∼6000 m/s) paired with very high resistivity (ρ &gt; 1000 Ωm) was found at depths of 150–200 m, suggesting unfractured or weakly fractured rocks consistent with borehole logs and literature data on geophysical surveys on crystalline rocks. We recognized a couple of sub-vertical low-Vp (∼4250–4500 m/s) and low-resistivity anomalies (ρ &lt; 500 Ωm), up to ∼15–35 m-wide, suggesting the occurrence of fracture zones with groundwater, matching the intersection with fault zones mapped at the surface. Comparison with co-located resistivity sections, downhole seismic surveys, well logs, and field-based structural and morphostructural analyses allowed us to attribute these anomalies to fault zones ∼0.3–0.5 km-long that belong to an immature fault network with shallow water circulation. This methodological approach highlights the utility of tomographic techniques combined with structural investigations and represents a guideline that can be applied in similar contexts characterized by poorly fractured crystalline rocks.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"911 ","pages":"Article 230830"},"PeriodicalIF":2.7,"publicationDate":"2025-06-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144335618","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":"Wedge inelasticity and fully coupled models of dynamic rupture, ocean acoustic waves, and tsunami in the Japan trench: The 2011 Tohoku-Oki earthquake","authors":"Shuo Ma ,&nbsp;Yue Du","doi":"10.1016/j.tecto.2025.230831","DOIUrl":"10.1016/j.tecto.2025.230831","url":null,"abstract":"<div><div>Along-strike variations of sediment thickness and inelastic wedge deformation can significantly affect the variations of near-trench slip, seismic radiation, and tsunamigenesis along the Japan Trench. We present fully coupled models of dynamic rupture, ocean acoustic waves, and tsunami for the 2011 M_W 9.1 Tohoku-Oki earthquake to fully investigate the physics of tsunami generation and radiation fields, by extending a dynamic rupture model with wedge inelasticity (<span><span>Ma, 2023</span></span>). The fully coupled models, incorporating ocean compressibility, produce tsunami in good agreement with that from a dispersive shallow-water model, confirming the validity of both models. We show strong radiation of ocean acoustic and seismic waves caused by fast rupture velocity (∼3 km/s) and large near-trench slip south of 39°N, dominated by elastic wedge response. However, north of 39°N where sediment thickens in the northern Japan Trench, the inelastic wedge deformation excites tsunami efficiently with diminishing near-trench slip (&lt;20 m), consistent with differential bathymetry observations, but causes slow rupture velocity (∼850 m/s) and significantly weaker radiation of ocean acoustic and seismic waves. Inelastic wedge deformation thus provides a self-consistent interpretation to both depletion in high-frequency radiation and large tsunami generation in the northern Japan Trench in this earthquake, which may challenge the use of ocean acoustic waves for robust tsunami early warning.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"910 ","pages":"Article 230831"},"PeriodicalIF":2.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144338340","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":"Compositional controls on the thermal conductivity of igneous rocks and a model for the conductivity of Antarctic crust","authors":"Simon Willcocks ,&nbsp;Derrick Hasterok ,&nbsp;Jacqueline A. Halpin ,&nbsp;Jessica Walsh ,&nbsp;Samuel Jennings","doi":"10.1016/j.tecto.2025.230802","DOIUrl":"10.1016/j.tecto.2025.230802","url":null,"abstract":"<div><div>Modelling heat flux through the lithosphere requires accurate estimates of thermal conductivity, yet few regions have sufficient estimates to constrain thermal models. Global geochemical databases in contrast, have numerous samples, but lack physical property estimates. In this study, we combine thermal conductivity measurements on 1053 globally-distributed samples with known chemical composition—including 48 new analyses from Antarctica—to develop empirical relationships between conductivity and major element composition, modal mineralogy and normative mineralogy. Despite a skew in the residuals, all compositional models result in similar misfit (∼0.4 W m⁻¹ K⁻¹) with 95 % of samples within ±20 % of measured conductivities. We then apply this conductivity-composition relationship to the PetroChron Antarctica database to predict the thermal conductivity of 6995 igneous protoliths. We predict 95 % of thermal conductivity estimates for Antarctic geochemical samples range from 1.78 to 3.19 W m⁻¹ K⁻¹, with an average of 2.49 ± 0.31 W m⁻¹ K⁻¹. These empirical relationships provide a way to produce reasonable estimates of rock conductivity that can be used to improve heat flux estimates beneath glaciers and ice sheets where the composition of the rocks is known.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"911 ","pages":"Article 230802"},"PeriodicalIF":2.7,"publicationDate":"2025-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144580758","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":"Lithospheric control on the deep mantle carbon transfer in the Magadi-Natron basins, East Africa","authors":"Xinxin Wang ,&nbsp;Jianfeng Yang ,&nbsp;Liang Zhao ,&nbsp;Gang Lu ,&nbsp;Ziqi Ma","doi":"10.1016/j.tecto.2025.230829","DOIUrl":"10.1016/j.tecto.2025.230829","url":null,"abstract":"<div><div>Mantle-derived carbon dioxide (CO₂) emissions during continental rifting are linked to climate change. The Archean cratonic mantle lithosphere has been considered a carbon reservoir that truncates ascending carbon-rich melts at its base, releasing huge amount of mantle CO₂ in the surrounding rift basins. These emissions are believed to be remobilized from the carbon-rich cratonic lithosphere. However, the mechanisms by which mantle carbon is reactivated from the craton to the surrounding rift basins remain poorly understood. Hence, we conducted petrological-thermomechanical modeling to investigate the migration and decarbonation processes of the carbonate-metasomatized mantle lithosphere (CMML) across the craton-mobile belt boundary during continental rifting. The model results show that for a thicker, lighter, and higher water (H₂O) content CMML, and a faster model extension, the CMML layer can be removed by the lateral advection and ascent from the craton margin to the rift basin formed in the adjacent mobile belt. Considering the 184 km long Magadi-Natron basins in East Africa, we observed that these processes generate a metamorphic CO₂ degassing flux of 0.19–0.56 Mt./yr across the rift basins. Based on the model results, we suggest that the carbon transit from the Archean Tanzanian craton into the Proterozoic Mozambique Belt boundary may be explained by the CMML migration processes. Our modeled CO₂ degassing flux provides lower bounds for the diffuse mantle CO₂ flux along faults in the Magadi-Natron basins.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"910 ","pages":"Article 230829"},"PeriodicalIF":2.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144320790","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":"Recurrence of large earthquakes along the southern Xainza-Dinggye rift and comparison with the 7 January 2025, Mw7.1 Tingri earthquake, southern Tibet","authors":"Kungang Wu ,&nbsp;Marie-Luce Chevalier ,&nbsp;Jiawei Pan ,&nbsp;Fucai Liu ,&nbsp;Shaohua Yang ,&nbsp;Siqi Zhang ,&nbsp;Qiang Su ,&nbsp;Haibing Li","doi":"10.1016/j.tecto.2025.230827","DOIUrl":"10.1016/j.tecto.2025.230827","url":null,"abstract":"<div><div>Southern Tibet is dissected by seven NS-trending rifts bounded by normal faults absorbing ∼9 mm/yr of EW extension over ∼1000 km. While large earthquakes are rare in this remote region, the occurrence of the 7 January 2025, M_w7.1 Tingri earthquake on a fault with a known long-term throw rate, presents a great opportunity to compare co-seismic deformation with long-term fault behavior. Here, we first report our main post-earthquake field observations along the seismogenic Dingmuco fault (0.9 m of co-seismic vertical offset) and Lagoi fault within the southern Xainza-Dinggye rift. We then compare these observations with late Quaternary throw and extension rates along the Dingmuco fault, derived from ¹⁰Be surface-exposure dating and topographic measurements of cumulative offsets. Our results yield throw rate and extension rates of 1.1(+0.5/−0.2) and 1.1 ± 0.3 mm/yr, respectively, over the past 19 ± 5 ka. This suggests that this relatively short fault plays a substantial role, accommodating roughly 12 % of the total EW extension across southern Tibet. These findings imply an average recurrence interval of ∼800 years for earthquakes of similar magnitude along the Dingmuco fault.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"910 ","pages":"Article 230827"},"PeriodicalIF":2.7,"publicationDate":"2025-06-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144307955","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}