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Seamount Subduction Dynamics and Long-Term Evolution of the Franciscan Active Margin Tectonics (IF 4.2) Pub Date : 2024-03-13 G. Bonnet, F. E. Apen, M. Soret, J. Noël, B. Caron, D. Ninkabou, P. Zverev, D. Deldicque
The Snow Mountain Volcanic Complex (SMVC; northern California, USA) is a well-preserved example of a coherently-exhumed subducted seamount. This study reappraises the genesis and evolution of this complex and surrounding units through detailed field, petro-structural and geochronological analyses. This work demonstrates that the SMVC (a) erupted at ∼166 Ma as a hotspot volcano on the Farallon Plate
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Surface Rupturing Earthquakes of the Greater Caucasus Frontal Thrusts, Azerbaijan Tectonics (IF 4.2) Pub Date : 2024-03-09 Ian Pierce, Ibrahim Guliyev, Gurban Yetirmishli, Rauf Muradov, Sabina Kazimova, Rashid Javanshir, Gregory P. De Pascale, Ben Johnson, Neill Marshall, Richard Walker, Paul Wordsworth
Here we present the results of the first paleoseismic study of the Kura fold-thrust belt in Azerbaijan based on field mapping, fault trenching, and Quaternary dating. Convergence at rates of ∼10 mm/yr between the Arabian and Eurasian Plates is largely accommodated by the Kura fold-thrust belt which stretches between central Azerbaijan and Georgia along the southern front of the Greater Caucasus (45–48°E)
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Evidence for a Constant Slip Rate Over the Last ∼40 ka Along the Mt. Morrone Fault System in Central Apennines Tectonics (IF 4.2) Pub Date : 2024-03-09 I. Puliti, L. Benedetti, A. Pizzi, J. Fleury, M. Francescone, V. Guillou, Aster Team
Located in the easternmost portion of the Central Apennines, the Mt. Morrone normal fault system is one of the highest seismic hazards in Italy. Previous geological and geomorphological observations revealed the presence of a ∼22 km-long NW-SE right-lateral en echelon fault system made of two parallel faults affecting Quaternary deposits. Our analysis focused on the westernmost fault, which bounds
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Diverse Structural Styles of the Northeastern Tethyan Himalaya in Southern Tibet Reveal the Early Collisional Tectonics of India and Asia Tectonics (IF 4.2) Pub Date : 2024-03-07 Yu Tang, Xiao Liang, Genhou Wang, Dian Li, Zhanhui Qing, Yipeng Feng, Wei Zhang, Ning Han, Yang Tian, Zhuosheng Wang
The poor understanding of the structural history of the Late Triassic flysch in the northeastern Tethyan Himalaya has caused many disputes regarding India-Asia collisional tectonics. Here, we conducted an integrated study including tectonostratigraphic analysis, structural analysis, and zircon U‒Pb and muscovite 40Ar/39Ar dating to unravel the structural evolution of the Late Triassic flysch. Field
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Multiple Exhumation Stages During the Cenozoic Evolution of the Northeast Tibetan Plateau Tectonics (IF 4.2) Pub Date : 2024-03-04 Xiuxi Wang, Massimiliano Zattin, Yu Yang, Jia Tao, Huiming Liu, Yanbo Zhang, Hong Wang, Bozhong Pang, Linbing Wang, Minxiao Ji
The Cenozoic growth history of the northeast (NE) Tibetan Plateau has been strongly debated in the past few years with three deformation models being proposed: progressive northeastward propagation, out-of-sequence deformation, and episodic deformation. Reconstruction of the long-term deformation and exhumation history of the different blocks can help elucidate the growth pattern and tectonic processes
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Stress Patterns and Crustal Anisotropy in the Eastern Alps: Insights From Seismological and Geological Observations Tectonics (IF 4.2) Pub Date : 2024-03-06 F. Villani, A. Antonioli, M. Pastori, P. Baccheschi, M. G. Ciaccio
In the Eastern Alps, the indentation of the Adriatic promontory since the Cenozoic affected the kinematics of separate crustal domains bounded by faults that accommodate lateral extrusion processes and differential shortening. Deciphering the pattern of crustal stresses in the orogen interior is challenging, due to the lack of in situ stress measurements at crustal depths. We define stress regimes
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A Complex Interplay Between Pluton Emplacement, Tectonic Deformation, and Plate Kinematics in the Cretaceous Sierra Nevada Magmatic Arc, California Tectonics (IF 4.2) Pub Date : 2024-03-04 Filip Tomek, Jiří Žák, Kryštof Verner, Josef Ježek, Scott R. Paterson
The relation of plate kinematics to the structural record of arc plutons and their host rocks is complex and still not fully understood. We address this issue through a combination of field mapping, structural analysis, anisotropy of magnetic susceptibility analysis, and fabric modeling in the Late Cretaceous Tuolumne Intrusive Complex, Sierra Nevada, California. A pattern of anti-clockwise rotation
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Tectonic Evolution of the Eastern Southern Alps (Italy): A Reappraisal From New Structural Data and Geochronological Constraints Tectonics (IF 4.2) Pub Date : 2024-03-04 Manuel Curzi, Giulio Viola, Costantino Zuccari, Luca Aldega, Andrea Billi, Roelant van der Lelij, Andrew Kylander-Clark, Gianluca Vignaroli
The Eastern Southern Alps fold-and-thrust belt (ESA) is part of the seismically active S-verging retro-wedge of the European Alps. Its temporal tectonic evolution during continental shortening has so far been constrained by few and low-resolution indirect time constraints. Aiming at better elucidating the ESA spatiotemporal evolution, we gathered new structural and geochronological data from two regional
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Tectonic Evolution of the Condrey Mountain Schist: An Intact Record of Late Jurassic to Early Cretaceous Franciscan Subduction and Underplating Tectonics (IF 4.2) Pub Date : 2024-03-04 C. M. Tewksbury-Christle, W. M. Behr, M. A. Helper, D. F. Stockli
The Klamath Mountains in northern California and southern Oregon are thought to record 200+ m.y. of subduction and terrane accretion, whereas the outboard Franciscan Complex records ocean-continent subduction along the North American margin. Unraveling the Klamath Mountains' Late Jurassic history could help constrain this transition in subduction style. Key is the Mesozoic Condrey Mountain Schist (CMS)
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The Manantiales Basin, Southern Central Andes (∼32°S), Preserves a Record of Late Eocene–Miocene Episodic Growth of an East-Vergent Orogenic Wedge Tectonics (IF 4.2) Pub Date : 2024-03-01 Chance B. Ronemus, Caden J. Howlett, Peter G. DeCelles, Barbara Carrapa, Sarah W. M. George
The Manantiales basin contains >4 km of nonmarine sedimentary strata that accumulated at 31.75–32.5°S during construction of the High Andes. We report field and analytical data from the underexplored northern portion of this basin. The basin contains upper Eocene–middle Miocene strata that accumulated in back-bulge or distal foredeep through inner-wedge-top depozones of the Andean foreland basin as
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Issue Information Tectonics (IF 4.2) Pub Date : 2024-03-01
No abstract is available for this article.
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Structural Interactions Between Deep Mesozoic Strike-Slip Faults and Shallow Cenozoic Contractional Folds in the Northern Tianshan Foreland Basin (NW China) Tectonics (IF 4.2) Pub Date : 2024-02-22 Zhenyu Peng, Xin Wang, Fabien Graveleau, Bruno C. Vendeville, Alan G. Nunns
In the rejuvenated mountain front, preexisting basement structures are often reactivated and interact with the subsequent thin-skinned deformation. How the deep structures affect the shallower ones is key to establishing the processes and mechanisms for the foreland fold-and-thrust system. We presented an exceptional case study on the structural inheritance between the deep Mesozoic strike-slip faults
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Active Shortening Simultaneous to Normal Faulting Based on GNSS, Geophysical, and Geological Data: The Seismogenic Ventas de Zafarraya Fault (Betic Cordillera, Southern Spain) Tectonics (IF 4.2) Pub Date : 2024-02-08 Asier Madarieta-Txurruka, Lourdes González-Castillo, José A. Peláez, Jesús Galindo-Zaldívar, María J. Borque, María C. Lacy, Antonio M. Ruiz-Armenteros, Jesús Henares, Patricia Ruano, Alberto Sánchez-Alzola, Manuel Avilés, Gracia Rodríguez-Caderot, Francisco José Martínez-Moreno, Víctor Tendero-Salmerón, Raquel Vinardell-Peña, Antonio J. Gil
The central Betic Cordillera, southern Spain, is affected by an uplift related to the NNW–SSE Eurasia-Nubia convergence and shallow ENE–WSW orthogonal extension accommodated by the extensional system of the Granada Basin. The combination of geophysical, geodetic, and geological data reveals that the southwestern boundary of this extensional system is a seismically active compressional front extending
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Is the Inverted Field Gradient in the Catalina Schist Terrane Primary or Constructional? Tectonics (IF 4.2) Pub Date : 2024-02-08 John P. Platt, William L. Schmidt
New geothermometry using laser-Raman data on carbonaceous material from low and intermediate grade rocks on Santa Catalina Island, California, together with existing thermobarometric data, show that there is a quasi-continuous increase in peak metamorphic temperature from 327 ± 8°C in lawsonite blueschist facies rocks at the lowest structural levels, through ∼433°C in overlying epidote blueschists
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Using Stochastic Point Pattern Analysis to Track Regional Orientations of Magmatism During the Transition to Cenozoic Extension and Rio Grande Rifting, Southern Rocky Mountains Tectonics (IF 4.2) Pub Date : 2024-02-07 J. M. Rosera, S. P. Gaynor, A. Ulianov, U. Schaltegger
The southern Rocky Mountains in Colorado and northern New Mexico hosted intracontinental magmatism that developed during a tectonic transition from shortening (Laramide orogeny, ca. 75 to 40 Ma) through extension and rifting. We present a novel approach that uses stochastic weighted bootstrap simulations of a large set of new and historical geochronology data to better understand how regional anisotropies
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Deep Structure of Siletzia in the Puget Lowland: Imaging an Obducted Plateau and Accretionary Thrust Belt With Potential Fields Tectonics (IF 4.2) Pub Date : 2024-02-06 M. L. Anderson, R. J. Blakely, R. E. Wells, J. D. Dragovich
Detailed understanding of crustal components and tectonic history of forearcs is important due to their geological complexity and high seismic hazard. The principal component of the Cascadia forearc is Siletzia, a composite basaltic terrane of oceanic origin. Much is known about the lithology and age of the province. However, glacial sediments blanketing the Puget Lowland obscure its lateral extent
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Tracking Rodinia Into the Neoproterozoic: New Paleomagnetic Constraints From the Jacobsville Formation Tectonics (IF 4.2) Pub Date : 2024-02-06 Yiming Zhang, Eben B. Hodgin, Tadesse Alemu, James Pierce, Anthony Fuentes, Nicholas L. Swanson-Hysell
The paleogeography of Laurentia throughout the Neoproterozoic is critical for reconstructing global paleogeography due to its central position in the supercontinent Rodinia. We develop a new paleomagnetic pole from red siltstones and fine-grained sandstones of the early Neoproterozoic Jacobsville Formation which is now constrained to be ca. 990 Ma in age. High-resolution thermal demagnetization experiments
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Issue Information Tectonics (IF 4.2) Pub Date : 2024-01-30
No abstract is available for this article.
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Crustal-Scale Duplex Development During Accretion of the Jiuxi Foreland Basin, North Qilian Shan Tectonics (IF 4.2) Pub Date : 2024-01-30 Yiran Wang, Michael E. Oskin, Youli Li, Xiu Hu, Jinghao Lei, Fei Liu
Understanding the propagation of shortening, especially the interaction of shallow and deep structural levels in space and time is important to understand the accretion process of a compressional orogen as well as to fully understand earthquake hazards to populated foreland basins. Here we combine evidence from geologic maps and stream-terrace surveys to construct a set of retrodeformable cross-sections
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Effects of Along-Trench Asymmetric Subduction Initiation on Plate Rotation and Trench Migration: A Laboratory Modeling Perspective Tectonics (IF 4.2) Pub Date : 2024-01-27 Chunyang Wang, Weiwei Ding, Wouter P. Schellart, Zhengyi Tong, Chongzhi Dong, Yinxia Fang, Jiabiao Li
The impact of along-trench asymmetric subduction on plate kinematic evolution (e.g., plate rotation and trench migration) remains enigmatic. In this study, analog experiments were performed to investigate the effects of symmetric and asymmetric subduction initiation on slab kinematics and trench migration. In cases when subduction was started with a cylindric slab perturbation, the plate showed little
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Exhumation of an Ultrahigh-Pressure Slice From the Upper Plate of the Caledonian Orogen—A Record From Titanite in North-East Greenland Tectonics (IF 4.2) Pub Date : 2024-01-21 Jane A. Gilotti, William C. McClelland, Wentao Cao, Matthew A. Coble
Ultrahigh-pressure (UHP) rocks in North-East Greenland lie within a larger region of high-pressure Laurentian crust formed in the overthickened upper plate of the collision with Baltica. Coesite-bearing zircon dates UHP metamorphism to 365–350 Ma, which formed at the end of the Caledonian collision as a result of intracontinental subduction facilitated by strike-slip faults that broke the lithosphere
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Late Cretaceous Sevier Versus Laramide Orogenies in Wyoming-Utah-Colorado, USA: New Insights From Basin Subsidence History Tectonics (IF 4.2) Pub Date : 2024-01-19 Danya Zhou, Shaofeng Liu, Lianbin Wang, Neng Wan, Ronald Steel
Variability in subsidence rates within Upper Cretaceous strata of the Western Interior Basin offers crucial insights into the response of surface sedimentation styles to Sevier-to-Laramide tectonics and related deep mantle processes. The formation mechanisms of the Late Cretaceous Western Interior Basin in North America have long been a subject of debate. A re-evaluation of the basin's subsidence history
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New Evidence of Late Quaternary Tectonic Activity Along the Eastern Margin of the Qaidam Basin Tectonics (IF 4.2) Pub Date : 2024-01-18 Guodong Bao, Zhikun Ren, Guanghao Ha, Jinrui Liu, Zhiliang Zhang, Xiaoxiao Zhu, Dengyun Wu, Haomin Ji
The tectonic deformation on the eastern margin of the Qaidam Basin, which has preserved complete sedimentary records, significantly influences the evolutionary model of the northeastern margin of the Tibetan Plateau. However, the deformation history in this area during the Holocene remains unclear. This study is based on the high-precision digital elevation model obtained through drone mapping technology
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Structural Restorations of the Complete Conjugate US-Mexico Eastern Gulf of Mexico Margin Tectonics (IF 4.2) Pub Date : 2024-01-18 Magdalena Ellis Curry, Michael R. Hudec, Frank J. Peel, Naiara Fernandez, Gillian Apps, John W. Snedden
We present the first sequential structural restoration with flexural backstripping of the Gulf of Mexico US-Mexico conjugate margin salt basin. We construct four large-scale (100s of km) balanced, sequential structural restorations to investigate spatio-temporal patterns of subsidence, geometry of the original salt basin, feedbacks between post-salt structural and stratigraphic evolution, paleo-bathymetry
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Sedimentological Evidence for Pre-Early Permian Continental Subduction in the Dabie Orogen, Central-East China Tectonics (IF 4.2) Pub Date : 2024-01-11 Tao Deng, Xiumian Hu, David Chew, Qin Wang, Jinhai Yu, Foteini Drakou
How to constrain the onset of continental subduction and prograde metamorphism in an orogen remains a fundamental question. The widespread Triassic ultrahigh-pressure (UHP) metamorphic rocks in the Dabie orogen in central-east China are generally attributed to continental subduction. The earliest Triassic peripheral basins (the Huangshi, Yueshan and Nanjing basins) around the Dabie orogen represent
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Magma-Assisted Continental Rifting: The Broadly Rifted Zone in SW Ethiopia, East Africa Tectonics (IF 4.2) Pub Date : 2024-01-08 A. Erbello, C. Colleps, D. Melnick, E. R. Sobel, B. Bookhagen, H. Pingel, G. Zeilinger, P. van der Beek, M. R. Strecker
The Gofa Province and Chew Bahir Basin in the Broadly Rifted Zone (BRZ) between the southern Main Ethiopian Rift (sMER) and the northern Kenya Rift (nKR) record early volcanism and associated faulting in East Africa; however, the spatiotemporal relationships between volcanism and faulting remain poorly constrained. We applied apatite (U-Th)/He (AHe) and zircon (U-Th)/He (ZHe) thermochronometry to Neoproterozoic
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Contrasting Styles of Salt-Tectonic Processes in the Ionian Zone (Greece and Albania): Integrating Surface Geology, Subsurface Data, and Experimental Models Tectonics (IF 4.2) Pub Date : 2024-01-08 J. I. Soto, M. D. Tranos, Z. Bega, T. P. Dooley, P. Hernández, M. R. Hudec, P. A. Konstantopoulos, E. Lula, K. Nikolaou, R. Pérez, J. P. Pita, J. A. Titos, C. Tzimeas, A. Herra Sánchez de Movellán
The Ionian Zone (IZ) is one of the key elements of the fold and thrust belt (FTB) of the Albanian and Hellenides orogen and contains large outcrops of Triassic evaporites. The IZ consists of various thrust sheets with a general westward vergence, stacking over the Apulian and Pre-Apulian zones, and repeating a thick carbonate sequence of Upper Triassic to Eocene age. Thrusting becomes younger toward
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Fault Geometry and Late Quaternary Kinematics Along the Tieluzi Fault: Implications for Tectonic Deformation and Eastward Expansion of the Tibetan Plateau, China Tectonics (IF 4.2) Pub Date : 2024-01-01 Xinnan Li, Ian K. D. Pierce, Kai Sun, Junjie Li, Huili Yang, Zicheng You, Shufeng Liu, Zhuqi Zhang, Chuanyou Li, Wenjun Zheng, Peizhen Zhang
The Tieluzi Fault is the largest structure in the East Qinling Mountains, and is considered to be the easternmost continuation of the Altyn Tagh-Haiyuan-Qinling Fault System (AHQFS) that allows the eastward extrusion of the Tibetan Plateau and South China Block. We studied the fault geometry and kinematics of the Tieluzi Fault using field investigations, detailed interpretations of high-resolution
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Differential Uplift Triggered Basin-And-Range System: Evidence From Low-Temperature Thermochronology in Eastern NE Asia Tectonics (IF 4.2) Pub Date : 2023-12-30 Jianping Zhou, Sanzhong Li, Yongjiang Liu, Boran Liu, Weimin Li, Guangzeng Wang, Liwei Jiang, Tong Zhou, Zunting Li, Zhiqiang Feng
Since the Mesozoic, eastern NE Asia has experienced multiple tectonic events, resulting in a complex structure and forming one of the world's largest Meso-Cenozoic lacustrine basin systems. Presently, basin evolution models require further elucidation regarding the simultaneous generation of diverse rift basins and the potential impact stemming from the closure of the Mudanjiang Ocean, whose oceanic
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Tectono-Stratigraphic Insights on the Dynamics of a Complex Subduction Zone, Northern Peruvian Forearc Tectonics (IF 4.2) Pub Date : 2023-12-28 J. A. Lajo-Yáñez, S. S. Flint, M. Huuse, R. L. Brunt
Two main types of subduction are recognized around the world: accretionary and erosive. The northern Peruvian margin is a well-known example of a margin subjected to subduction erosion, but to date the along-margin variability and temporal changes in subduction process and forearc basin evolution have not been characterized in detail. Interpretation of regional seismic lines and integration of oil-industry
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Issue Information Tectonics (IF 4.2) Pub Date : 2023-12-28
No abstract is available for this article.
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Influence of Inherited Brittle Fabrics on Continental Rifting: Insights From Centrifuge Experimental Modeling and Application to the East African Rift System Tectonics (IF 4.2) Pub Date : 2023-12-28 Yaoyao Zou, Daniele Maestrelli, Giacomo Corti, Chiara Del Ventisette, Liang Wang, Chuanbo Shen
The presence of pre-existing fabrics at all lithospheric scales has been proven to be of primary importance in controlling the evolution of continental rifts. Indeed, observations from natural examples show that even in conditions of orthogonal rifting, when extension should result in simple fault patterns dominated by normal faults orthogonal to extension vectors, inherited fabrics induce complex
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Role of Mantle Drag on the Tectonics of Subduction Zones: Insights From Laboratory Models Tectonics (IF 4.2) Pub Date : 2023-12-22 T. Geffroy, B. Guillaume, M. Simoes, A. Replumaz, R. Lacassin, L. Husson, J. J. Kermarrec
Along convergent boundaries, the role played by mantle drag remains poorly understood despite its potential impact on subduction dynamics and in turn on the deformation regime of the overriding plate. In this study, we present 11 three-dimensional analog models of subduction including an overriding plate, in which mantle drag at the base of the lower or upper plate results from an imposed unidirectional
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Middle Miocene Onset of the Litang Fault System Records Kinematic Change in Eastern Tibet Tectonics (IF 4.2) Pub Date : 2023-12-14 Kai Cao, Di Zhang, Xiaoming Shen, Junfeng Zhang, Dun Wang, Yadong Xu, Guocan Wang
The ∼400-km-long Litang fault system (LTFS) is a major intracontinental strike-slip fault inside the Chuandian block, eastern Tibet, but its evolution and role in accommodating the India-Asia convergence remain poorly known. Structural analysis shows that the LTFS splits into 5 strands as a left-lateral, right-stepping en-echelon pattern formed under NW-directed compression, subsequently reactivated
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Architecture and Evolution of the Southern Chotts-Jeffara Basin, Tunisia Tectonics (IF 4.2) Pub Date : 2023-12-15 P.-O. Bruna, G. Bertotti, R. J. G. Charton, R. Dixon, A. Nasri
Southern Tunisia is known to be less deformed and simpler than its neighboring Atlassic domain to the north. This area is complex and basin evolution in the Southern Chotts-Jeffara (SCJ) basin is debated. In this paper we combined surface and subsurface data with low temperature thermochronology (LTT) to reinvestigate the tectono-sedimentary evolution of the SCJ basin from Permian to Jurassic. We reconstruct
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Shale 3D Flow and Interaction With Basement Faults in the Niger Delta Deep-Water Fold and Thrust Belt Tectonics (IF 4.2) Pub Date : 2023-12-11 V. Spina, S. Mazzoli
Based on a large 3D seismic data set in the deep-water domain of the Niger Delta, this study challenges previous interpretations involving the occurrence of multiple detachments and extensive thrust flats, illustrating timing and mode of shales flow at the toe of the gravity system. Five units of syn-kinematic sediments, reaching a maximum thickness of ∼800 m, accumulated in the tectonically subsiding
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Identification of Source Faults of Large Earthquakes in the Turkey-Syria Border Region Between 1000 CE and the Present, and Their Relevance for the 2023 Mw 7.8 Pazarcık Earthquake Tectonics (IF 4.2) Pub Date : 2023-12-09 S. Carena, A. M. Friedrich, A. Verdecchia, B. Kahle, S. Rieger, S. Kübler
The 6 February 2023, Mw 7.8 Pazarcık earthquake in the Turkey-Syria border region raises the question of whether such a large earthquake could have been foreseen, as well as what is the maximum possible magnitude (Mmax) of earthquakes on the East Anatolian Fault (EAF) system and on continental transform faults in general. To answer such questions, knowledge of past earthquakes and of their causative
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Polarity and Timing of the Deformation Along the Jinsha Suture Zone (Yushu Area, Northeastern Tibet) Tectonics (IF 4.2) Pub Date : 2023-12-06 Fanny Goussin, Stéphane Guillot, Gilles Ruffet, Marc Poujol, Émilien Oliot, Anne Replumaz, Carole Cordier, Guillaume Dupont-Nivet, Pierrick Roperch
The Tibetan Plateau was formed by intense Cenozoic shortening (up to 1,100 km) of a composite “proto-Tibet,” itself the product of a long Paleozoic and Mesozoic history of accretion of Gondwana-derived continental fragments and volcanic arcs against the Asian continental margin. The difficult access and the scarcity of outcrops have long limited the possibilities of studying these Mesozoic suture zones
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Discovery of an Active Forearc Fault in an Urban Region: Holocene Rupture on the XEOLXELEK-Elk Lake Fault, Victoria, British Columbia, Canada Tectonics (IF 4.2) Pub Date : 2023-12-06 Nicolas Harrichhausen, Theron Finley, Kristin D. Morell, Christine Regalla, Scott E. K. Bennett, Lucinda J. Leonard, Edwin Nissen, Eleanor McLeod, Emerson M. Lynch, Guy Salomon, Israporn Sethanant
Subduction forearcs are subject to seismic hazard from upper plate faults that are often invisible to instrumental monitoring networks. Identifying active faults in forearcs therefore requires integration of geomorphic, geologic, and paleoseismic data. We demonstrate the utility of a combined approach in a densely populated region of Vancouver Island, Canada, by combining remote sensing, historical
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Issue Information Tectonics (IF 4.2) Pub Date : 2023-11-30
No abstract is available for this article.
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Building and Collapse of the Cadomian Orogen: A Plate-Scale Model Based on Structural Data From the SW Iberian Massif Tectonics (IF 4.2) Pub Date : 2023-11-30 Diana Moreno-Martín, Rubén Díez Fernández, Ricardo Arenas, Esther Rojo-Pérez, Irene Novo-Fernández, Sonia Sánchez Martínez
The Cadomian Orogeny produced a subduction-related orogen along the periphery of Gondwana and configured the pre-Variscan basement of the Iberian Massif. The architecture of the Cadomian Orogen requires detailed structural analysis for reconstruction because of severe tectonic reworking during the Paleozoic (Variscan cycle). Tectonometamorphic analysis and data compilation in SW Iberia (La Serena Massif
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Devonian to Early Carboniferous Retreating—Advancing Subduction Switch in the Northwestern Patagonia Accretionary Orogen: U-Pb and Lu-Hf Isotopic Insights Tectonics (IF 4.2) Pub Date : 2023-11-15 Paulo Marcos, Emiliano M. Renda, Pablo D. González, Sebastián Oriolo, Nicolás Scivetti, Leonardo Benedini, Mauro Geraldes, Daniel Gregori, María Belén Yoya, Marcos Bahía
In this contribution, we present new early middle Devonian igneous and metaigneous units with a major juvenile magmatic source input in the North Patagonian Massif, which were discovered through U-Pb and Lu-Hf zircon analyses. Afterward, we assessed their tectonic implications for northwestern Patagonia and then for southern South America, combining our results with available database information consisting
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A Deformed Wedge-Top Basin Inverted During the Collapse of the Variscan Belt: The Permo-Carboniferous Lorraine Basin (NE France) Tectonics (IF 4.2) Pub Date : 2023-11-13 R. Hemelsdaël, O. Averbuch, L. Beccaletto, A. Izart, S. Marc, L. Capar, R. Michels
A new structural model is presented for the Permo-Carboniferous Lorraine Basin (NE France), a major intramountain basin that developed during the latest stages of the Variscan orogeny (ca. 315–270 Ma). Digitalized well logs and reprocessed seismic data were used to decipher the kinematic evolution of this basin located along the Rhenohercynian orogenic suture zone. The basin was initiated during the
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Exploring the Connection of XVI-Century Major Historical Earthquakes in the Eastern Betic Cordillera, Spain: Insights From Viscoelastic Relaxation of the Lithosphere Tectonics (IF 4.2) Pub Date : 2023-11-13 Pouye Yazdi, Julián García-Mayordomo, José Antonio Álvarez-Gómez, Jorge Miguel Gaspar-Escribano, Eulália Masana
Understanding the crustal fault interaction and connection between earthquakes in areas with slow tectonic deformation, such as Betic Cordillera (South Spain), is challenging. When seismic rates are low and large destructive earthquakes happen less frequently, it is necessary to resort to historical or paleoseismic records. This study investigates the postseismic viscoelastic relaxation mechanism as
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Deep Seismic Reflection Imaging of Mesozoic Kachchh Rift, NW India: Implications for Evolution Tectonics (IF 4.2) Pub Date : 2023-11-07 Biswajit Mandal, V. Vijaya Rao, P. Karuppannan, K. Laxminarayana, Sumer Chopra, M. Ravi Kumar, Prakash Kumar
Deep crustal seismic reflection profiling is carried out for first time across various tectonic domains of seismically active Mesozoic Kachchh rift basin, formed during the breakup of Gondwanaland. The seismic data, processed using the common reflection surface stack approach, provided maiden images of the shallow and deep sub-surface structures in the region. These images reveal a 15 km thick subhorizontal
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Tectono-Sedimentary Evolution of Shale-Related Minibasins in the Karvandar Basin (South Sistan, SE Iran): Insights From Magnetostratigraphy, Isotopic Dating, and Sandstone Petrology Tectonics (IF 4.2) Pub Date : 2023-11-02 J. B. Ruh, L. Valero, M. Najafi, N. Etemad-Saeed, J. Vouga, A. Mohammadi, F. Landtwing, M. Guillong, M. Cobianchi, N. Mancin
Sediments deposited into foreland basins can provide valuable insights related to the geological evolution of their hinterlands. Located in the peripheral foreland of the South Sistan Suture Zone (SE Iran), the Karvandar Basin exhibits a several-kilometer-thick shallow-marine to continental clastic sedimentary sequence forming elongated sub-circular synclines. These synclines overlie a mud-dominated
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Alpine Ductile Deformation of the Upper Iberian Collided Margin (Eaux-Chaudes Massif, West-Central Pyrenean Hinterland, France) Tectonics (IF 4.2) Pub Date : 2023-11-02 Norbert Caldera, Antonio Teixell, Albert Griera, Pierre Labaume, Marc Guardia
The Eaux-Chaudes massif provides keys to unravel the deep-seated deformation of the Iberian rifted margin during the Alpine orogeny in the Pyrenees. The massif conforms to an inlier of upper Cretaceous carbonate rocks within the Paleozoic basement of the western Axial Zone, originally deposited in the upper margin shelf before the Cenozoic collision. New geological mapping and cross-section construction
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Diachronous Quaternary Development of the Jiayuguan Fault and Implications for Strain Compartmentalization and Modern Earthquake Hazards in the NW Hexi Corridor, China Tectonics (IF 4.2) Pub Date : 2023-10-30 Haibo Yang, An Li, Dickson Cunningham, Yan Zhan, Jiahong Luo, Xiaoping Yang, Zhidan Chen, Yuqi Zuo, Zongkai Hu, Ruoni Tang
The NNW-trending Jiayuguan Fault (JYGF) is an actively developing thrust fault that delimits the SW margin of Jiayuguan, a major industrial city in the northwestern Hexi Corridor, China. In this study, we document the geometry, kinematics, and slip rates of the JYGF based on analysis of satellite imagery, low-altitude photogrammetry, field observations, paleo-seismic trenching, and Quaternary dating
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Issue Information Tectonics (IF 4.2) Pub Date : 2023-10-27
No abstract is available for this article.
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Morpho-Tectonics of Transpressional Systems: Insights From Analog Modeling Tectonics (IF 4.2) Pub Date : 2023-10-20 Ethan M. Conrad, Riccardo Reitano, Claudio Faccenna, Thorsten W. Becker
Transpressional margins are widespread, and their dynamics are relevant for plate boundary evolution globally. Though transpressional orogen evolution involves a topographic response to deformation, many studies focus only on the structural development of the system ignoring surface processes. Here, we present a new set of analog models constructed to investigate how tectonic and surface processes
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The Development of Fault Networks at the Termination of Continental Transform Faults When Their Connecting Plate Boundary Is “Misaligned” Tectonics (IF 4.2) Pub Date : 2023-10-18 M. Withers, A. R. Cruden, M. C. Quigley
We report the results of a series of scaled laboratory experiments that investigate the development of fault systems in plate boundary transition zones, where deformation is distributed between a continental transform fault (e.g., Alpine Fault, New Zealand; North Anatolian Fault (NAF), Turkey; San Andreas Fault (SAF), USA) and its connecting plate boundary. In these transition zones, continental transform
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Exhuming an Accretionary Prism: A Case Study of the Kodiak Accretionary Complex, Alaska, USA Tectonics (IF 4.2) Pub Date : 2023-10-18 Kristijan Rajič, Hugues Raimbourg, Vincent Famin, Benjamin Moris-Muttoni, Donald M. Fisher, Kristin D. Morell, Aurélien Canizarés
We have carried a structural study across Kodiak accretionary complex in Alaska, USA, in order to describe its thermal structure and decipher the processes of exhumation. The accretionary complex consists of a stack of tectonic mélanges and coherent units. Mélanges are characterized by simple shear deformation with a pervasive network of top-to-the-trench shear zones, whereas coherent units are affected
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Dynamics of Brittle-Viscous Accretionary Wedges as Revealed by Geophysical and Drilling Data and Analog Modeling of the Barbados Prism Tectonics (IF 4.2) Pub Date : 2023-10-13 Eric Deville
Mega-accretionary prisms do not exhibit the characteristics of the classical Coulomb wedge theory. In the example of the Barbados accretionary prism, a system of elongated extensional trenches (“basin-&-range” type) developed in the thickest zone of the tectonic wedge and this system has been active since at least Miocene times. Synchronously with this extension, compression occurred at the front of
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Deformation Sequence and Paleofluids in Carbonate Buckle Folds Under Transpression (Pag Anticline, External Dinarides, Croatia) Tectonics (IF 4.2) Pub Date : 2023-09-28 A. Lucca, S. Mittempergher, A. Succo, A. Bistacchi, M. Meda, F. Storti
Contractional deformation structures at the front of transpressional orogens display complex three-dimensional geometries deviating from the interpretative templates commonly applied in thrust belts. Accordingly, detailed constraints on deformation patterns and associated paleofluid circulation are desirable, especially for fracture geometry and permeability predictive purposes. The Pag anticline,
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Extensional Faulting Around Kolumbo Volcano, Aegean Sea—Relationships Between Local Stress Fields, Fault Relay Ramps, and Volcanism Tectonics (IF 4.2) Pub Date : 2023-09-28 Gareth J. Crutchley, Jens Karstens, Jonas Preine, Christian Hübscher, Haakon Fossen, Michel Kühn
The Christiana-Santorini-Kolumbo (CSK) volcanic field has hosted more than 100 explosive eruptions in the past 250,000 years, including the 1650 CE eruption of Kolumbo Volcano. Previous studies have established a link between regional tectonics and volcanism in the CSK volcanic field. While 2D seismic reflection data have given valuable insight into regional faulting, detailed fault zone characterization
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Issue Information Tectonics (IF 4.2) Pub Date : 2023-09-26
No abstract is available for this article.
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Deciphering Permanent Uplift Along the Pacific Coast of South America Through Signal Analysis of Various Tectonic Processes Tectonics (IF 4.2) Pub Date : 2023-09-27 Roland Freisleben, Julius Jara-Muñoz, Daniel Melnick, Diego Molina, Andrés Tassara, Peter van der Beek, Manfred R. Strecker
The tectonically active South American margin is characterized by the accumulation of deformation contributing to uplift of the Andean forearc at millennial time scales. However, the mechanisms responsible for permanent coastal uplift are debated, mainly because methodologically consistent, continental-scale analyses of uplifted terraces have not yet been carried out for South America. Uplifted marine
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Thrace Basin—An Oligocene Clastic Basin Formed During the Exhumation of the Rhodope Complex Tectonics (IF 4.2) Pub Date : 2023-09-25 Aral I. Okay, Ercan Özcan, Muzaffer Siyako, Kerem A. Bürkan, Andrew R. C. Kylander-Clark, Michael D. Bidgood, David Shaw, Michael D. Simmons
Some orogenic sedimentary basins are difficult to assign to a particular category. An example is the hydrocarbon-bearing Thrace Basin in the northern Aegean. It has more than 9-km-thick Cenozoic clastic sediment, and is spatially associated with the Rhodope metamorphic core complex in the west, and with the Tethyan subduction-accretion complexes in the south, and is cut by the North Anatolian Fault
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Subsidence and Uplift History of the UAE and the Western Flank of the UAE-Oman Mountain Range Tectonics (IF 4.2) Pub Date : 2023-09-25 M. A. Jabir, M. Y. Ali, M. Ismaiel, A. B. Watts
The western flank of the UAE-Oman mountain range offers a unique geodynamic setting to study the development of a cratonic rift into a mature passive margin and its subsequent flexure under orogenic load. However, the geodynamic processes driving this evolution are not fully understood. In this study, seismic and biostratigraphic data from 283 exploration wells were utilized to assess the regional
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Rheology Dependent on the Distance to the Propagating Thrust Tip—(Ultra-)Mylonites and Pseudotachylytes of the Silvretta Basal Thrust Tectonics (IF 4.2) Pub Date : 2023-09-21 Lisa M. Brückner, Claudia A. Trepmann, Melanie Kaliwoda
To evaluate how the presence of pseudotachylytes affects the strength of crustal rocks, deformed pseudotachylytes and their relationship with pristine pseudotachylytes at the base of the Silvretta nappe are analyzed. Pseudotachylytes formed associated with high-stress crystal plasticity (σd > 400 MPa), as indicated by twinned amphiboles in gneisses. Mylonitic quartz clasts enclosed within deformed