Article
Geochemistry & Geophysics
Maximilian J. E. A. Richter, Sascha Brune, Simon Riedl, Anne Glerum, Derek Neuharth, Manfred R. Strecker
Summary: The study conducted 2D geodynamic models to unravel asymmetric rifting processes in the East African Rift System, revealing a three-stage early rift evolution. The models provide insights into the controls of along-strike rift variability in active asymmetric rifts and proximal rifted margins.
Article
Geochemistry & Geophysics
Alessandro Regorda, Cedric Thieulot, Iris van Zelst, Zoltan Erdos, Julia Maia, Susanne Buiter
Summary: This study uses 2D thermomechanical numerical models of rifting on Earth to simulate the formation of crustal rift features on Venus. The results indicate that a strong diabase crust is required for rift formation under the high temperature and pressure conditions on Venus. The evolving rift features are predominantly controlled by crustal thickness, and the differences in rift features on Venus could be due to variations in crustal thickness. Based on estimated heat flux, the most likely crustal thickness on Venus is less than 35 km.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2023)
Article
Geosciences, Multidisciplinary
Thomas B. Phillips, Ken McCaffrey, Luke Magarinos
Summary: This study examines how deep fault population influences the development of a younger fault system at shallow depths, finding that deep faults may reactivate and affect the shallow structures, while older faults may be buried and separated from newly developing faults. The degree of linkage between structural levels determines the influence that the deeper structures can exert over the geometry and evolution of the incipient fault system.
Article
Geochemistry & Geophysics
G. Peron-Pinvidic, L. Fourel, S. J. H. Buiter
Summary: Most rifts and rifted margins around the world developed on former omgens, implying heterogeneous pre-rift lithospheric configuration. Our study reveals that considering pre-rift orogenic inheritance can more accurately explain the geometries of rifted margins.
Article
Geosciences, Multidisciplinary
Frank Zwaan, Pauline Chenin, Duncan Erratt, Gianreto Manatschal, Guido Schreurs
Summary: The combination of mantle and crustal weaknesses can create complex rift structures, while changes in divergence rates affect the degree of coupling and surface expressions of deformation. Changes in divergence directions impact the evolution of structures during rifting.
Article
Geochemistry & Geophysics
D. Maestrelli, S. Brune, G. Corti, D. Keir, A. A. Muluneh, F. Sani
Summary: Rift-Rift-Rift triple junctions are key features of emergent plate boundary networks during fragmentation of a continent. The differential extension velocities in the rift branches determine the localization of the structural triple junction, and the imposed velocities affect the resulting fault patterns.
Article
Geosciences, Multidisciplinary
Alessandro Decarlis, Alberto Zanetti, Abimbola Chris Ogunyele, Andrea Ceriani, Riccardo Tribuzio
Summary: This work reviews and discusses the tectonic evolution of the IVZ and suggests that inheritance from previous orogenic cycles played a role in the Mesozoic Alpine Tethys rifting processes. Different compositions of the IVZ peridotite massifs reflect upper mantle processes developed since late Proterozoic-early Paleozoic. The delamination of the overthickened crust and K-metasomatism in the Finero mantle section may have contributed to the localization of Triassic-Jurassic extensional tectonic pulses.
EARTH-SCIENCE REVIEWS
(2023)
Article
Geosciences, Multidisciplinary
Pablo Granado, Jonas B. Ruh, Pablo Santolaria, Philipp Strauss, Josep Anton Munoz
Summary: This study presents a series of 2D thermo-mechanical numerical experiments on thick-skinned crustal extension, including a pre-rift salt horizon and different styles of convergence. The results show that extension along steep basement faults can produce half-graben structures and lead to changes in the distribution of pre-rift salt. The rate of thick-skinned extension and the rheology of salt control the accommodation space and timing of minibasin grounding.
FRONTIERS IN EARTH SCIENCE
(2021)
Article
Geosciences, Multidisciplinary
Riccardo Asti, Nicolas Saspiturry, Paul Angrand
Summary: Plate kinematic reconstructions suggest that the Iberian plate underwent significant eastward drift and counterclockwise rotation with respect to Eurasia during the Late Jurassic-Early Cretaceous period. While previous studies proposed that this displacement was accommodated along the North Pyrenean Zone, there is no substantial field evidence for such a large horizontal displacement along the North Pyrenean Fault. This study proposes a revised understanding of the processes responsible for the plate boundary compartmentalization, suggesting that the left-lateral movement within the plate boundary was not localized along a single fault, but rather distributed through a zone of deformation that was recorded by sedimentary basins. The study also suggests that other Permian-Mesozoic depocenters located below the Cenozoic foreland basins may have played a role in this rift system.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geochemistry & Geophysics
Per Terje Osmundsen, Gwenn Peron-Pinvidic, Halvor Bunkholt
Summary: The study reveals the structural evolution of rifted margins near Norway, demonstrating that early rift structures were dominated by the post-Caledonian template and evolved into deeper faults and core complexes in the Late Paleozoic and Earliest Mesozoic. The transition from core complex extension to incising faults occurred before the deposition of Late Triassic-Early Jurassic strata, highlighting significant complexity and extension magnitudes in proximal margins.
Article
Geochemistry & Geophysics
Anindita Samsu, Alexander R. Cruden, Nicolas E. Molnar, Roberto F. Weinberg
Summary: The study shows that pre-existing penetrative basement fabrics can influence new faults in cover rocks during rifting through a subtle form of inheritance, impacting the fault network architecture in rift basins significantly. Additionally, experiments demonstrate that basement anisotropies play a role in determining fault orientation and spacing during rift formation.
Article
Construction & Building Technology
Gustavo Botelho Barbosa, William Luiz Fernandes, Marcelo Greco, Daniel Henrique Nunes Peixoto
Summary: The main purpose of this article is to discuss the use of Lyapunov exponents for evaluating the integrity of structures. The analysis considers geometric and physical nonlinearities and aims to ensure the applicability of the method in robust simulations. Material nonlinearity is modeled using the multilinear isotropic elastoplastic model and a recently developed damage model. The results indicate that Lyapunov exponents can be used as indicative parameters of structural integrity, detecting structural destabilization and material failures.
Article
Engineering, Aerospace
Alak Bandyopadhyay, Alok Majumdar, Paul Schallhorn
Summary: This paper presents a study on fluid transients in a pipeline with the sudden opening of a valve, examining the consistency and differences between computed results and experimental data under different conditions. The use of structural deformation modeling coupled with fluid dynamics problem provides better comparisons with the experimental data.
JOURNAL OF AEROSPACE ENGINEERING
(2021)
Article
Geosciences, Multidisciplinary
Yanjun Cheng, Zhiping Wu, Wen Su, Mingming Chen, Jie Zhang, Yuqing Liu, Qingbo Wu
Summary: English Summary: The rift structures of the Shanan and Chengbei sags in the Early Cretaceous and Paleogene periods were influenced by the Indosinian and Yanshanian tectonic movements. However, there is a lack of understanding regarding the basement structures and how they influenced the later rift development, which has hindered hydrocarbon exploration in the area. Through the analysis of seismic reflection data and onshore field data, it was found that the basement of the study area contains NW-striking low-angle fold-thrust belts from the Indosinian period and NE-striking high-angle thrusts from the Yanshanian period. These pre-existing structures had a significant impact on the architectural and structural evolution of the rift in the study area during the Early Cretaceous and Paleogene periods.
MARINE AND PETROLEUM GEOLOGY
(2023)
Article
Geosciences, Multidisciplinary
Leonardo M. Pichel, Alex F. Antunes, Haakon Fossen, Barbara F. Rapozo, Emma Finch, Valeria C. Cordoba
Summary: The Rio do Peixe Basin in onshore NE Brazil is a well-imaged rift basin that provides valuable insights into the multiphase history of rift basins. By combining various data sources and numerical modeling, the researchers were able to investigate the architecture and evolution of the basin. They discovered that the basement fabric controlled the fault architecture and kinematics, and that syn-rift faults played a role in the development of fault-related folds. Furthermore, the study found minor inversion in the basin, likely due to a change in plate kinematics. These findings have implications for understanding the evolution of graben systems and the recognition of inversion- versus extension-related folds in rift basins worldwide.
Article
Geochemistry & Geophysics
Lorenz Wolf, Ritske S. Huismans, Delphine Rouby, Robert L. Gawthorpe, Sebastian G. Wolf
Summary: This study investigates the modeling of continental rifting and finds that the degree of strain localization drives the structural evolution of rifts. The sediment flux correlates with the degree of strain localization and can serve as a proxy for the evolution of topography.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geosciences, Multidisciplinary
Raulindo Santana Silva Neto, Ginaldo Ademar Cruz Campanha, Oskar Vidal-Royo, Patrick Launeau, Claudio Alejandro Salazar-Mora
Summary: In this study, three different methods were used to estimate tectonic shortening in the Chapada Diamantina region. The results show that the range of tectonic shortening in the area is between 18% and 22%, and the Paramirim aulacogen may have experienced greater shortening. These findings reveal that the western and eastern parts of the São Francisco craton were not rigidly linked during the Neoproterozoic-Cambrian Brasiliano orogeny, with the Paramirim aulacogen playing an important role.
JOURNAL OF SOUTH AMERICAN EARTH SCIENCES
(2022)
Article
Geosciences, Multidisciplinary
Sergio E. Jaensch, Leonardo E. Lagoeiro, Haakon Fossen, Carolina Cavalcante
Summary: This study investigates the relationship between crystallographic preferred orientation (CPO) and strain geometry using the electron backscatter diffraction (EBSD) method. The results show that flow perturbation may be a common cause of complex 3D strain patterns in sheared rocks. Therefore, estimating strain geometry from CPO alone is inherently difficult.
JOURNAL OF STRUCTURAL GEOLOGY
(2022)
Article
Multidisciplinary Sciences
Sebastian G. Wolf, Ritske S. Huismans, Jean Braun, Xiaoping Yuan
Summary: This study investigates the growth and decay of mountain belts using a coupled surface process and mantle-scale tectonic model. The results show that surface processes and tectonics play significant roles in controlling the height, shape, and longevity of mountain belts.
Article
Geochemistry & Geophysics
Zoltan Erdos, Ritske S. Huismans, Claudio Faccenna
Summary: Back-arc basins are extensional structures that can exhibit narrow or wide-rift extension. The style of back-arc rifting is controlled by the relative rates of slab-pull force and convective thinning and thermal weakening of the overriding plate. A high subducting plate velocity leads to narrow back-arc rift, while a low subducting plate velocity allows for wide rifting.
Article
Multidisciplinary Sciences
Thomas Theunissen, Ritske S. Huismans
Summary: The development of offset normal faults in the conjugate Flemish Cap and Galicia magma-poor rifted margins is explored in this study. The authors suggest that alternating opposite dipping detachments are the underlying cause. By using forward geodynamic models, the research shows that multiple out-of-sequence detachments with recurring dip reversal occur during magma-poor rifting and mantle exhumation. The results indicate that fault types and detachment styles vary with spreading rate and fault strength.
NATURE COMMUNICATIONS
(2022)
Article
Geosciences, Multidisciplinary
Leonardo M. Pichel, Alex F. Antunes, Haakon Fossen, Barbara F. Rapozo, Emma Finch, Valeria C. Cordoba
Summary: The Rio do Peixe Basin in onshore NE Brazil is a well-imaged rift basin that provides valuable insights into the multiphase history of rift basins. By combining various data sources and numerical modeling, the researchers were able to investigate the architecture and evolution of the basin. They discovered that the basement fabric controlled the fault architecture and kinematics, and that syn-rift faults played a role in the development of fault-related folds. Furthermore, the study found minor inversion in the basin, likely due to a change in plate kinematics. These findings have implications for understanding the evolution of graben systems and the recognition of inversion- versus extension-related folds in rift basins worldwide.
Article
Geosciences, Multidisciplinary
Thomas Theunissen, Ritske S. Huismans, Gang Lu, Nicolas Riel
Summary: The selection of crustal and mantle densities in numerical geodynamic models is traditionally based on convention, which may not accurately reflect observed elevations. This study aims to calibrate densities to fit relative continent/mid-ocean ridge elevations based on observations, providing a reference case for geodynamic modelling. The results suggest that the relative elevation difference between mid-ocean ridges and continents is influenced by crustal density, mantle composition, and lithospheric mantle depletion.
EARTH-SCIENCE REVIEWS
(2022)
Article
Geosciences, Multidisciplinary
Thilo Wrona, Alexander C. Whittaker, Rebecca E. Bell, Robert L. Gawthorpe, Haakon Fossen, Christopher A. -L. Jackson, Marit Stokke Bauck
Summary: This study utilizes new 3D seismic reflection data from the northern North Sea to reveal a continental rift landscape dating back to the Late Permian-Early Triassic. The landscape, preserved by a combination of tectonic faults and burial sediments, provides valuable insights into the tectono-stratigraphic evolution of ancient continental rifts.
Article
Geochemistry & Geophysics
Claudio Alejandro Salazar-Mora, Victor Sacek
Summary: By using numerical models, researchers explored the effects of quiescence between orogeny and rifting on the pre-rift lithosphere and subsequent conjugate rifted margin configuration. The study found that long periods of tectonic quiescence can lead to hyperextended conjugate rifted margins, while narrower orogenic wedges are less affected. This research supports the development of conjugate rifted margins in the Atlantic Ocean.
Article
Geochemistry & Geophysics
Leonardo M. Pichel, Ritske S. Huismans, Robert Gawthorpe, Jan Inge Faleide, Thomas Theunissen
Summary: This study investigates the dynamics and controls on salt tectonics variability in continental rifted margins using 2D thermo-mechanical finite element modeling. The results show that different types of continental margins form different characteristics of salt basins, and the deposition and tectonic changes of salt are also influenced by syn-rift extension and basin architecture.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
Lorenz Wolf, Ritske S. Huismans, Sebastian G. Wolf, Delphine Rouby, Dave A. May
Summary: Continental rifts grow through the interaction and linkage of individual fault segments, influenced by erosion and sedimentation. A 3D computer model reveals that crustal strength, inherited structures, and erosional efficiency play significant roles in rift segment interaction and resulting rift architectures. The study identifies five characteristic rift patterns and finds similarities between the simulated results and the Western branch of the East African Rift System.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geochemistry & Geophysics
Benjamin Gerard, Delphine Rouby, Ritske S. Huismans, Cecile Robin, Charlotte Fillon, Jean Braun
Summary: In this study, a Landscape Evolution Model with flexural isostasy is used to examine the influence of inherited foreland relief on the stratigraphic evolution of the retro-foreland domain during mountain building. The initial relief of the foreland domain significantly alters its landscape evolution during the first 10 million years of simulation. However, once the foreland slope stabilizes, the impact of the initial relief is smoothed out and a long-term shallowing-up mega-sequence is recorded in the models. The timing of the transition from the under-filled to the over-filled phase is also affected by the initial relief of the foreland domain.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2023)
Article
Geosciences, Multidisciplinary
Leonardo M. Pichel, Ritske S. Huismans, Robert Gawthorpe, Jan Inge Faleide
Summary: Continental rifted margins with thick salt deposits exhibit varying and complex structural styles and evolution in the post-rift stage. Sediment fluxes and progradation rates significantly influence the style and magnitude of salt tectonics along these margins. The relationship between sediment progradation rates and salt flow rates controls the vertical and lateral movement of salt and determines the occurrence of diapirism and nappe advance. Geodynamic numerical modeling enhances our understanding of salt tectonics in salt-bearing rifted margins.
Article
Geochemistry & Geophysics
Edoseghe E. Osagiede, Casey W. Nixon, Rob Gawthorpe, Atle Rotevatn, Haakon Fossen, Christopher A. -L. Jackson, Fabian Tillmans
Summary: The spatial variation of the topological characteristics of normal fault networks at the rift-scale is investigated using 3D seismic reflection data from the northern North Sea. It is found that fault orientation varies spatially along the rift margin, with different dominant strikes in fault blocks adjacent to the graben compared to those farther from the graben. Two broad topological domains are identified within the fault network, which correlate with the sub-division of the rift margin into different structural domains. There is also a positive correlation between fault orientations and intensity, highlighting the relationship between fault geometry and topology.