Tectonophysics最新文献

Late Cenozoic tectonic evolution of the Tengchong and Baoshan blocks, southeastern Tibetan Plateau: Insights from low-temperature thermochronology 青藏高原东南部腾冲和宝山地块晚新生代构造演化：来自低温热年代学的启示

IF 2.6 3区地球科学

Tectonophysics Pub Date : 2025-07-30 DOI: 10.1016/j.tecto.2025.230866

Jiawen Jiang , Chen Wu , Jie Li , Peter Haproff , Guosheng Wang , Xiaoming Shen , Hao Wu , Yu Xia

{"title":"Late Cenozoic tectonic evolution of the Tengchong and Baoshan blocks, southeastern Tibetan Plateau: Insights from low-temperature thermochronology","authors":"Jiawen Jiang , Chen Wu , Jie Li , Peter Haproff , Guosheng Wang , Xiaoming Shen , Hao Wu , Yu Xia","doi":"10.1016/j.tecto.2025.230866","DOIUrl":"10.1016/j.tecto.2025.230866","url":null,"abstract":"<div><div>The southeastern Tibetan Plateau has been a key area for Cenozoic deformation and orogenic expansion during India-Asia convergence. Yet, its tectonic and exhumation histories remain inadequately understood. In addition, significant debate has focused on whether lateral growth of the plateau was controlled by continental-scale, discrete faulting and/or lower crustal flow. To address these questions for the southeastern Tibetan Plateau, we performed field mapping and low-temperature thermochronology across the Tengchong and Baoshan blocks and along the Gaoligong and Chongshan shear zones. Cooling ages and thermal history models indicate that the region experienced at least four distinct cooling phases since the Miocene: ca. 18–10 Ma, ca. 7–5 Ma, and ca. 5–2 Ma. The Early to Middle Miocene (ca. 18–10 Ma) phase is characterized by greater and more rapid cooling and thus, dominated the exhumation history of the southeastern Tibetan Plateau margin. Ca. 18–10 Ma cooling is interpreted to be associated with oblique slip along the Gaoligong shear zone. Regional cooling from ca. 15–10 Ma was likely driven by lower crustal flow. Late Miocene (ca. 7–5 Ma) cooling was restricted to areas featuring deep river incision, suggesting influences from topography and enhanced erosion. Pliocene–early Pleistocene (ca. 5–2 Ma) cooling is linked to fault activity and volcanism associated with Indian slab dynamics beneath the Myanmar subduction zone. Our results also suggest that the lateral expansion of the southeastern Tibetan Plateau was driven by both continental-scale shear and lower-crustal flow rather than a singular dynamic mechanism.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"912 ","pages":"Article 230866"},"PeriodicalIF":2.6,"publicationDate":"2025-07-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144763916","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}

引用次数: 0

Monitoring induced seismicity in the Weiyuan shale gas field utilizing a dense array 利用密集阵监测威远页岩气田诱发地震活动

IF 2.6 3区地球科学

Tectonophysics Pub Date : 2025-07-25 DOI: 10.1016/j.tecto.2025.230862

Lichun Yang , Jinping Zi , Ruijia Wang , Hongfeng Yang

{"title":"Monitoring induced seismicity in the Weiyuan shale gas field utilizing a dense array","authors":"Lichun Yang , Jinping Zi , Ruijia Wang , Hongfeng Yang","doi":"10.1016/j.tecto.2025.230862","DOIUrl":"10.1016/j.tecto.2025.230862","url":null,"abstract":"<div><div>Understanding the mechanisms of induced seismicity and assessing associated hazards is crucial for risk mitigation in shale gas production regions. From August 2022 to February 2023, we maintained a dense array of 245 nodal stations with an average spacing of ∼3 km, covering the entire Weiyuan shale gas field (WSGF), an actively exploited region that has experienced induced earthquakes up to <em>M</em><sub><em>w</em></sub> 5.0. Using the LOC-FLOW, we constructed a high-resolution earthquake catalog, precisely locating 29,669 events ranging from <em>M</em><sub><em>L</em></sub> − 1.35 to <em>M</em><sub><em>L</em></sub> 3.42 with a completeness magnitude (<em>M</em><sub><em>c</em></sub>) of −0.24. Seismicity formed five distinct clusters, with those in the southern WSGF closely surrounding hydraulic fracturing wells and exhibiting migration patterns consistent with pore-pressure diffusion. In contrast, northern seismicity displayed characteristics of fault reactivation, with events aligning with pre-existing geological structures. Additionally, we observed persistent seismic activity near the epicenter of 2019 <em>M</em><sub><em>w</em></sub> 5.0 event, suggesting a long-lasting aftershock sequence. Our findings emphasize the necessity of high-resolution seismic monitoring and long-term hazard assessment in shale gas fields. The results contribute to a better understanding of injection-induced seismicity and fault activation processes, providing valuable insights for risk mitigation and sustainable resource production in tectonically sensitive regions.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"912 ","pages":"Article 230862"},"PeriodicalIF":2.6,"publicationDate":"2025-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144750071","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}

引用次数: 0

Revisiting the Tremiti Islands structural high in the central Adriatic Sea (Italy), new insights from gravity anomaly modelling 重访亚得里亚海（意大利）中部的特雷米蒂群岛构造高地，从重力异常模型中获得新的见解

IF 2.7 3区地球科学

Tectonophysics Pub Date : 2025-07-21 DOI: 10.1016/j.tecto.2025.230860

Mattia De Luca , Antonio Cafarelli , Paolo Mancinelli , Vittorio Scisciani

{"title":"Revisiting the Tremiti Islands structural high in the central Adriatic Sea (Italy), new insights from gravity anomaly modelling","authors":"Mattia De Luca , Antonio Cafarelli , Paolo Mancinelli , Vittorio Scisciani","doi":"10.1016/j.tecto.2025.230860","DOIUrl":"10.1016/j.tecto.2025.230860","url":null,"abstract":"<div><div>In this study we investigate the Tremiti Islands structural high (TISH), north of the Gargano Promontory, to evaluate the possible implications of salt walls and diapirs in the formation and evolution of the archipelago. A series of different datasets, including seismic, gravity, magnetic, and well-log data, were integrated and modelled to unravel the geological and structural setting of the Tremiti Islands. Although detailed modelling of the observed gravity and magnetic anomaly was never attempted, most of the available literature traditionally relates the origin of the TISH to salt diapirism in the wider framework of the Apennine orogenesis during the Plio-Quaternary.</div><div>The analysis of seismic profiles combined with gravity anomaly modelling, contrary to the general view, suggest possible but very limited halokinetic salt underneath the TISH. Based on our interpretations, we propose that the TISH structure could be linked to inherited fault reactivation during recent compressional foreland deformation. To support this interpretative view, we test several modelling hypotheses finding that the best-fitting solutions support a configuration with minimal evaporites at depths greater than 5 km. This result contrasts with larger and shallower salt diapirs hypothesized in previous studies. Additionally, the structural interpretation suggests that the TISH features, influenced by both normal and reverse faults, are likely associated with deformation related to at least two tectonic phases in the Paleogene and Late Pliocene-Quaternary times that have affected the Adriatic foreland. Altogether these findings suggest that the structural high possibly developed through positive fault inversion rather than extensional halokinetic structures.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"912 ","pages":"Article 230860"},"PeriodicalIF":2.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144704785","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}

引用次数: 0

Kinematics, displacement and timing of shear zone junctions: The case of the Taperoá-Patos shear system, Borborema Province, NE Brazil 剪切带连接点的运动学、位移和定时：Taperoá-Patos剪切系统的案例，巴西东北部Borborema省

IF 2.7 3区地球科学

Tectonophysics Pub Date : 2025-07-21 DOI: 10.1016/j.tecto.2025.230859

Carlos F. Ávila , Carlos J. Archanjo , Gustavo Viegas , Antomat A. Macêdo Filho , Maria Helena B.M. Hollanda

{"title":"Kinematics, displacement and timing of shear zone junctions: The case of the Taperoá-Patos shear system, Borborema Province, NE Brazil","authors":"Carlos F. Ávila , Carlos J. Archanjo , Gustavo Viegas , Antomat A. Macêdo Filho , Maria Helena B.M. Hollanda","doi":"10.1016/j.tecto.2025.230859","DOIUrl":"10.1016/j.tecto.2025.230859","url":null,"abstract":"<div><div>Networks of interacting transcurrent shear zones are a hallmark feature of mid- to late-stage orogenic deformation and often drive significant displacement. In one of the largest of such systems on Earth, the Neoproterozoic Borborema Province of NE Brazil, shear zones with opposing shear senses are common but still poorly constrained in terms of relative chronology and total offset. High-resolution multispectral Sentinel 2 imagery from the vicinity of the junction of the left-lateral Taperoá and right-lateral Patos shear zones was processed to generate accurate and large-scale structural maps. Selective Principal Component Analysis was evaluated using simulated principal component scores of selected reference mineral spectra. False color Crosta composites yielded reliable lithological contrasts for extraction of lineaments and mapping of lithological units which are displaced by the Taperoá shear zone by 52 km. U<img>Pb ages obtained from the Lagoa do Meio (608 ± 5 Ma) and Itapetim (617 ± 5 Ma) plutons and their mapped continuous spatial connection along the shear zone core show their protracted crystallization history (potentially spanning more than 10 Myr) in a pre-transcurrent setting, due to their displacement of 52 km. Together with structural profiles of other key units, such as the 590 Ma alkaline granites and the c. 980 Ma host-regional metabasic units, these observations constitute kinematic evidence that the Taperoá shear zone was initiated after 590 Ma and grew in an intra-terrane setting. With this timing, it was potentially synchronous with early shearing of the Patos shear zone, thus constituting with it a dextral closing zipper.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"912 ","pages":"Article 230859"},"PeriodicalIF":2.7,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144703160","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}

引用次数: 0

Seismic fluid correlation revealed by the change of friction coefficient in the Northeastern Noto Peninsula 诺托半岛东北部摩擦系数变化揭示的地震流体对比

IF 2.7 3区地球科学

Tectonophysics Pub Date : 2025-07-19 DOI: 10.1016/j.tecto.2025.230858

Zhaoxuan Guan , Yongge Wan , Mingyue Zhou , Runyan Wang

引用次数: 0

Tectonic structures of Lake Eğirdir (SW Türkiye) revealed by magnetic analysis 磁分析揭示Eğirdir湖（SW t<s:1> rkiye）构造构造

IF 2.7 3区地球科学

Tectonophysics Pub Date : 2025-07-16 DOI: 10.1016/j.tecto.2025.230857

Gülten Aktaş , Z. Mümtaz Hisarlı , Erdinç Öksüm

{"title":"Tectonic structures of Lake Eğirdir (SW Türkiye) revealed by magnetic analysis","authors":"Gülten Aktaş , Z. Mümtaz Hisarlı , Erdinç Öksüm","doi":"10.1016/j.tecto.2025.230857","DOIUrl":"10.1016/j.tecto.2025.230857","url":null,"abstract":"<div><div>Lake Eğirdir, located within the tectonically complex Isparta Angle of southwestern Türkiye, hosts an actively deforming transtensional basin shaped by multidirectional stresses. Although the surrounding fault systems have been studied previously, the subsurface fault architecture beneath the lake remained largely unresolved. Understanding the lake's subsurface tectonic framework is crucial for regional geological and seismic assessments. This study addresses this gap by applying traditional and advanced edge detection techniques to identify magnetic lineaments and assess their connection with surrounding faults using newly acquired high-resolution magnetic data, corrected for noise and distortions. The distinct magnetic lineaments identified confirm a structural connection on land with the regional fault network around the lake, also showing their continuity under the lake. The results reveal dominant NW-SE and <em>E</em>-W trending magnetic lineaments. The most prominent structure identified within the lake is a NE-SW fault that cuts the NW-SE anomalies and is spatially related to the Yaka Fault on land. Its continuation beneath the lake is confirmed by clustered seismicity and normal fault-type focal mechanisms, indicating active transtensional deformation. These findings highlight active faulting processes that continue to shape the lake basin and contribute to understanding regional seismic hazards. Integration of magnetic, bathymetric, seismic, and geodetic datasets reveals that Lake Eğirdir acts as a dynamic neotectonic transfer zone within the Isparta Angle, facilitating the westward extrusion of the Anatolian Plate.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"912 ","pages":"Article 230857"},"PeriodicalIF":2.7,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664926","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}

引用次数: 0

No deformation propagation outward of the plateau across the Yalong Thrust Belt in Southeast Tibet 青藏高原向外沿雅龙冲断带无变形传播

IF 2.9 3区地球科学

Tectonophysics Pub Date : 2025-07-16 DOI: 10.1016/j.tecto.2025.230855

P. Pitard, A. Replumaz, P.H. Leloup, M.-L. Chevalier, S. Wang, M. Bai, X. Ou, M. Bernet, M. Balvay, E.R. Sobel, A. Vezinet, C. Gautheron, J. de Sigoyer, H. Li

{"title":"No deformation propagation outward of the plateau across the Yalong Thrust Belt in Southeast Tibet","authors":"P. Pitard, A. Replumaz, P.H. Leloup, M.-L. Chevalier, S. Wang, M. Bai, X. Ou, M. Bernet, M. Balvay, E.R. Sobel, A. Vezinet, C. Gautheron, J. de Sigoyer, H. Li","doi":"10.1016/j.tecto.2025.230855","DOIUrl":"https://doi.org/10.1016/j.tecto.2025.230855","url":null,"abstract":"In Southeast Tibet, the Yalong Thrust Belt (YTB) is an ideal area to test a model of thrust propagation following the collision between India and Asia. We investigate the role of the Jinhe thrust, the southernmost fault of the YTB, by dating 34 samples from four profiles using various thermochronometers. We find that the Jinhe thrust was active before ~30 Ma, when continental Tibetan lithosphere subduction occurred at the scale of the plateau along the Jinsha suture. The Jinhe thrust is located above the South China craton edge, thickening its upper crust. The Jiulong thrust and the Muli thrust, hinterland faults of the YTB located west of the craton, were also active at that time. During the Miocene, only the Jiulong and Muli thrusts have been re-activated from ~12.5 to 5 Ma. Therefore, no migration of the deformation occurred outwards of the plateau, as migration was limited to the east by the South China craton. The thickening of the more deformable crust occurred west of the craton, squeezed between the craton and the Eastern Himalayan syntaxis. We propose a revised tectonic reconstruction at the scale of the plateau, to illustrate the evolution of Southeast Tibet in connection with the indentation of the Indian continent.","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"9 1","pages":""},"PeriodicalIF":2.9,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664929","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}

引用次数: 0

Persistent postseismic signals: Multigeodetic insights into the 1920 Haiyuan earthquake's legacy 持续的震后信号：1920年海原地震遗留的多地测地观测

IF 2.7 3区地球科学

Tectonophysics Pub Date : 2025-07-14 DOI: 10.1016/j.tecto.2025.230856

Fengyun Jiang, Lingyun Ji, Chuanjin Liu, Liangyu Zhu, Lei Liu, Jing Xu

{"title":"Persistent postseismic signals: Multigeodetic insights into the 1920 Haiyuan earthquake's legacy","authors":"Fengyun Jiang, Lingyun Ji, Chuanjin Liu, Liangyu Zhu, Lei Liu, Jing Xu","doi":"10.1016/j.tecto.2025.230856","DOIUrl":"10.1016/j.tecto.2025.230856","url":null,"abstract":"<div><div>The 1920 M 8.5 Haiyuan earthquake in northeastern Tibet provides a unique opportunity to investigate century-scale postseismic deformation. Current geodetic observations may still retain deformation signals from this historic event, potentially biasing estimates of fault slip rates and locking depths. We integrate Sentinel-1 SAR data (2014–2020) from three tracks with GPS velocities to construct a high-resolution 3D deformation field. A 3D viscoelastic finite element model incorporating rheological heterogeneity and complex fault geometry reveals that: (1) The prominent deformation anomaly southwest of the rupture zone is dominated by lower crustal viscoelastic relaxation, with an equivalent viscosity of ∼9 × 10<sup>19</sup> Pa·s; (2) Postseismic effects cause ∼1.0 mm/yr overestimation in far-field slip rates; (3) Slip rates decrease eastward (4.72–1.36 mm/yr), correlating positively with locking depths (15–20 km in western segments vs. <3 km in eastern segments), suggesting faster healing in high-slip regions; (4) Multi-track InSAR gradients resolve the shallow creep controversy, showing no detectable creep along the 1920 rupture. These findings demonstrate that neglecting centennial postseismic deformation introduces systematic biases in fault parameter estimation. Our study advances understanding of long-term viscoelastic processes and provides critical constraints for seismic hazard assessment in intracontinental strike-slip systems.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"912 ","pages":"Article 230856"},"PeriodicalIF":2.7,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144664928","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}

引用次数: 0

An updated inclination-only fold test for paleomagnetic studies 用于古地磁研究的最新的仅倾斜折叠试验

IF 2.7 3区地球科学

Tectonophysics Pub Date : 2025-07-13 DOI: 10.1016/j.tecto.2025.230854

Yiming Ma , Shaochen Hu , Mark J. Dekkers , Tianshui Yang , Chao Niu , Huapei Wang

引用次数: 0

Evidence of the West Java back-arc thrust from earthquake activity 地震活动导致西爪哇弧后逆冲的证据

IF 2.7 3区地球科学

Tectonophysics Pub Date : 2025-07-12 DOI: 10.1016/j.tecto.2025.230853

Pepen Supendi , Sri Widiyantoro , Nicholas Rawlinson , Mudrik R. Daryono , A. Ardianto , Aria Widhi Baskara , Ruben Damanik , Yayan M. Husni

{"title":"Evidence of the West Java back-arc thrust from earthquake activity","authors":"Pepen Supendi , Sri Widiyantoro , Nicholas Rawlinson , Mudrik R. Daryono , A. Ardianto , Aria Widhi Baskara , Ruben Damanik , Yayan M. Husni","doi":"10.1016/j.tecto.2025.230853","DOIUrl":"10.1016/j.tecto.2025.230853","url":null,"abstract":"<div><div>In this study, a borehole seismic experiment was designed to investigate seismic activity associated with the West Java back-arc thrust. This passive source experiment was composed of seven borehole seismometers that extended across the Subang region and surrounding areas. The experiment recorded seismic data between December 2022 and September 2023 and was supplemented by data from the Agency for Meteorology, Climatology, and Geophysics of Indonesia (BMKG) permanent seismic station network. During the recording period of the temporary array, we identified and located 15 shallow crustal earthquakes and computed their focal mechanisms. The occurrence of thrust-type earthquakes in the back-arc region during this period offers evidence of continued tectonic activity along the West Java back-arc thrust. Our integrated analysis, which incorporates geological studies and previous research, reveals a complex fault network comprising the Citarum Front Fault, Citarum Fault, and Baribis Fault system, indicating significant horizontal and vertical changes in the regional stress field. Furthermore, we identify a previously unrecognized fault, which we call the Cirata Fault, which is characterised by earthquakes with thrust mechanisms. Intriguingly, we observe normal faulting at the eastern end of the Lembang Fault, suggesting reactivation of old fault structures associated with the ancient Sunda Caldera. These findings have significant implications for seismic hazard assessment and disaster preparedness in the region, and highlights the importance of continuous monitoring and collaborative efforts among geologists, seismologists, urban planners, and policymakers.</div></div>","PeriodicalId":22257,"journal":{"name":"Tectonophysics","volume":"911 ","pages":"Article 230853"},"PeriodicalIF":2.7,"publicationDate":"2025-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144621957","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}

引用次数: 0