Article
Geology
Oscar Fernandez, Mario Habermueller, Bernhard Grasemann
Summary: New outcrop evidence shows that the Hallstatt diapir grew passively during the Triassic and extruded to the seabed during the Jurassic, challenging the traditional interpretation of its formation and some views on the orogenic events in the Eastern Alps.
Article
Geosciences, Multidisciplinary
Qing Bian, Shang Deng, Huixi Lin, Jun Han
Summary: The connection between source rock and reservoir separated by salt strata is a global problem. This paper focuses on the No. 5 strike-slip fault passing through salt layers in the Tarim Basin. The seismic data reveals different structural styles in the salt layer, including transpression, transtension, and pure strikeslip. The impact of deep strike-slip salt tectonics on petroleum exploration is discussed using data from seven wells, showing that thicker salt layers result in poorer production.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geosciences, Multidisciplinary
Yida Li, Michael Gurnis
Summary: Plate tectonic reconstructions of well-defined subduction initiation events in the western Pacific, using computational models and observations, show that strike-slip motion has a significant influence on the ease of subduction initiation. The effect of strike-slip motion can be represented by a modified weakening rate, and a block of oceanic crust can become trapped between thrust and strike-slip faults. Subduction initiation occurs when the resisting forces become smaller than the driving forces and the intraplate stress turns from compression to extension. The initiation time is influenced by convergence velocity, plate age, strike-slip velocity, and weakening rate.
FRONTIERS IN EARTH SCIENCE
(2023)
Article
Geosciences, Multidisciplinary
Xinyi Zhong, Zhong-Hai Li
Summary: The recent statistics suggest that a majority of active Cenozoic subduction initiation cases are connected to strike-slip faults. Previous studies have highlighted the importance of lithospheric weak zones in subduction initiation, but the influence of strike-slip motion on lithospheric weakening and subduction initiation has not been extensively investigated in numerical models. A new 3D model incorporating both strike-slip and compression boundary conditions was used in this study to explore this relationship.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geochemistry & Geophysics
Thomas Leydier, Philippe Goncalves, Julie Albaric, Henri Leclere, Kevin H. Mahan, Daniel Faulkner
Summary: Tracking changes in P-wave propagation velocity and anisotropy across a natural shear zone using experimental and electron backscatter diffraction methods, we found that seismic properties show a non-linear evolution due to interactions among structural, textural, and mineralogical changes.
Article
Geosciences, Multidisciplinary
Duan Wei, Zhiqian Gao, Tailiang Fan, Yongbin Niu, Ruixin Guo
Summary: This article investigates the effects of hydrothermal fluids related to multiple tectonic-thermal events on Ordovician carbonate rocks on the northern slope of the Tazhong Uplift in the Tarim Basin. It suggests that magma-sourced hydrothermal fluids and deep-seated ultramafic-derived hydrothermal fluids may have played a key role in the silicification and dolomitisation processes. The strike-slip fault systems appear to have served as conduits for the transport of these fluids, contributing to the formation of hydrothermal dolomites and cherts.
Article
Geosciences, Multidisciplinary
Chao Liang, Jean-Paul Ampuero, Daniel Pino Munoz
Summary: Our research shows that faults nucleated in the brittle layer are unlikely to form at orthogonal angles, while shear bands in the deep ductile layer can induce near-orthogonal strike-slip faulting in the brittle lithosphere.
GEOPHYSICAL RESEARCH LETTERS
(2021)
Article
Geosciences, Multidisciplinary
Mohammed S. Gumati
Summary: Understanding the development of syn-rift carbonate systems is complex, and their facies distributions can sometimes be difficult to predict due to key factors such as tectonics, eustasy, palaeogeography and climate. The study in SE Dahra Platform demonstrates that synsedimentary faults control reservoir architecture and predict heterogeneous distributions of carbonate facies, with local tectonic deformations and sea-level changes being primary controls on platform geometry and facies distributions.
MARINE AND PETROLEUM GEOLOGY
(2022)
Article
Geochemistry & Geophysics
Aurio Erdi, Christopher A-L Jackson
Summary: This study examines the structure and growth of salt-detached strike-slip faults using a 3D seismic reflection dataset from the Outer Kwanza Basin offshore Angola. The findings suggest that these faults formed to accommodate variations in differential seaward translation and salt diapirism. The growth of the fault arrays occurred through tip propagation of isolated fault segments, with some segments linking during specific time periods. The results also highlight the scatter in the D-L scaling of strike-slip faults, reflecting the propagation, interaction, and linkage of individual fault segments.
Article
Geology
Xiang Cheng, Zhaojie Guo, Yan Chen, Xiangjiang Yu, Wei Du, Jiawei Wu, Haifeng Wang, Caifang Wu
Summary: The Yingxiong Range is the largest anticlinal belt within the triangular overlapping zone between the Altyn Tagh Fault and the Eastern Kunlun Fault, recording critical structural formation information. It is mainly controlled by NE-dipping low-angle thrust faults and deep-level faults with complex fracture systems of different orientations.
INTERNATIONAL GEOLOGY REVIEW
(2022)
Article
Geosciences, Multidisciplinary
Yifan Gao, Ling Chen, Jianfeng Yang, Kun Wang
Summary: The Iranian plateau is undergoing compressive deformation in response to the Arabia-Eurasia collision. Interestingly, the deformation is concentrated in the northern plateau, challenging the common perception of progressive uplift from the collisional front to the hinterland. The weak northern plateau and the presence of N-S strike-slip faults within the central plateau play key roles in accommodating and accentuating the compressive deformation.
GEOPHYSICAL RESEARCH LETTERS
(2023)
Article
Geochemistry & Geophysics
A. E. Aksu, J. Hall, C. Yaltirak
Summary: The study of the structural evolution of the Larnaka Ridge using high-resolution multichannel seismic reflection profiles and multibeam mosaics of the seafloor revealed the presence of tension cracks and distinct seafloor lineations with unique orientations. The data also indicate a switch in the direction of the principal maximum compressive stress during the Quaternary period, likely associated with tectonic events in the eastern Mediterranean.
Article
Geosciences, Multidisciplinary
J. C. Lozos
Summary: This study investigates the conditions under which rupture occurs on two component faults simultaneously in an orthogonal strike-slip fault system through dynamic rupture simulations. The results show that only when slip on the first fault reduces the normal stress on the second fault, or when a stopping phase occurs due to the termination of the first fault at the cross fault, multifault ruptures occur.
GEOPHYSICAL RESEARCH LETTERS
(2022)
Article
Engineering, Civil
Wei Liu, Chunjie Huang, Shaofeng Zhang, Zhaoyang Song
Summary: In this study, large-scale centrifuge tests were conducted to investigate the failure mechanisms of continuous steel pipes crossing strike-slip faults. The effects of burial depth, pipe-fault crossing angle, and pipe diameter on the pipe responses were analyzed. The results serve as benchmarks for theoretical and numerical models.
ENGINEERING STRUCTURES
(2023)
Article
Geosciences, Multidisciplinary
Molly Turko, Shankar Mitra
Summary: The Anadarko Basin in south-central Oklahoma contains oil and gas fields located on anticlinal structures formed during the Pennsylvanian Orogeny. The structural geometry and kinematic evolution of the Carter-Knox, Cruce, Chickasha, and Cement structures were interpreted using new seismic and well data, revealing tight faulted-detachment folds within Pennsylvanian units and deeper low amplitude fault-related folds within prePennsylvanian carbonate units. The evolution of these structures was influenced by mechanical stratigraphy, pre-existing basement structures, and a rotation in stresses during the final stage of their formation.
MARINE AND PETROLEUM GEOLOGY
(2021)
Article
Geochemistry & Geophysics
F. Hawemann, N. S. Mancktelow, G. Pennacchioni, S. Wex, A. Camacho
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2019)
Article
Geochemistry & Geophysics
Manuele Faccenda, Ana M. G. Ferreira, Nicola Tisato, Carolina Lithgow-Bertelloni, Lars Stixrude, Giorgio Pennacchioni
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2019)
Article
Geochemistry & Geophysics
Alessandro Guastoni, Luciano Secco, Radek Skoda, Fabrizio Nestola, Mariangela Schiazza, Milan Novak, Giorgio Pennacchioni
Article
Multidisciplinary Sciences
L. R. Campbell, L. Menegon, A. Fagereng, G. Pennacchioni
NATURE COMMUNICATIONS
(2020)
Article
Geochemistry & Geophysics
Simone Papa, Giorgio Pennacchioni, Luca Menegon, Marcel Thielmann
EARTH AND PLANETARY SCIENCE LETTERS
(2020)
Article
Geology
Alberto Ceccato, Philippe Goncalves, Giorgio Pennacchioni
JOURNAL OF METAMORPHIC GEOLOGY
(2020)
Article
Geochemistry & Geophysics
G. Pennacchioni, M. Scambelluri, M. Bestmann, L. Notini, P. Nimis, O. Plumper, M. Faccenda, F. Nestola
EARTH AND PLANETARY SCIENCE LETTERS
(2020)
Review
Multidisciplinary Sciences
Luca Menegon, Lucy Campbell, Neil Mancktelow, Alfredo Camacho, Sebastian Wex, Simone Papa, Giovanni Toffol, Giorgio Pennacchioni
Summary: This paper discusses the field-based geological investigations in the Musgrave Ranges and Nusfjord, revealing that deformation of the dry lower continental crust is characterized by cyclic interplay between viscous creep and brittle, seismic slip. Seismic slip triggers rheological weakening and a transition to viscous creep, indicating that earthquake cycle deformation controls the rheological evolution of the dry lower crust.
PHILOSOPHICAL TRANSACTIONS OF THE ROYAL SOCIETY A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES
(2021)
Article
Geochemistry & Geophysics
Simone Masoch, Rodrigo Gomila, Michele Fondriest, Erik Jensen, Thomas Mitchell, Giorgio Pennacchioni, Jose Cembrano, Giulio Di Toro
Summary: This study investigates the formation and evolution of the Bolfin Fault Zone (BFZ) in the Coastal Cordillera of Northern Chile. The fault zone, which originated in the pre-Ordovician Atacama Fault System, experienced seismic activity at depths of 5-7 km, associated with pseudotachylytes deposited around 125-118 Ma ago.
Article
Geochemistry & Geophysics
Albert de Montserrat, Manuele Faccenda, Giorgio Pennacchioni
Summary: Rocks in the Earth's crust and mantle develop extrinsic mechanical anisotropy due to strain partitioning, accumulated strain, and bulk strain geometry during high-temperature deformation. Weak inclusions significantly weaken the composite by forming thin layers with limited lateral connectivity, while strong inclusions do not have a profound impact on the effective strength of the aggregate. The modeled grain-scale fabrics can be parameterized based on bulk deformation and material phase properties to approximate the anisotropic viscous tensor.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Michel Bestmann, Giorgio Pennacchioni, Bernhard Grasemann, Benjamin Huet, Michael W. M. Jones, Cameron M. Kewish
Summary: The study demonstrates that the re-equilibration of Ti-in-quartz system during retrograde deformation is primarily controlled by the availability of free grain boundaries and fluids, rather than strain. It shows that the most complete re-equilibration occurs in strain shadows around quartz porphyroclasts and in localized microshear zones. Additionally, the study provides insights into the application of titanium-in-quartz geothermobarometry at lower temperatures under conditions dominated by subgrain rotation recrystallization.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2021)
Article
Geochemistry & Geophysics
Neil S. Mancktelow, Alfredo Camacho, Giorgio Pennacchioni
Summary: The study of pseudotachylyte in deeply exhumed rocks provides direct observational constraints for understanding earthquake rupture mechanisms in lower continental crust. The preserved microstructures in a felsic granulite from the Musgrave Ranges in central Australia offer insights into the sequence of thermal and mechanical processes during a single earthquake event that occurred about 550 million years ago.
JOURNAL OF GEOPHYSICAL RESEARCH-SOLID EARTH
(2022)
Article
Geosciences, Multidisciplinary
Simone Masoch, Michele Fondriest, Rodrigo Gomila, Erik Jensen, Thomas M. Mitchell, Jose Cembrano, Giorgio Pennacchioni, Giulio Di Toro
Summary: This study investigates the structural variability of the Bolfin Fault Zone in Northern Chile and its impact on earthquake mechanics. The findings suggest that the fault zone contains multiple altered fault core strands and fluid-rich protobreccias, indicating extensive fluid percolation during fault activity.
JOURNAL OF STRUCTURAL GEOLOGY
(2022)
Article
Geochemistry & Geophysics
G. Magnarini, S. Aretusini, T. M. Mitchell, G. Pennacchioni, G. Di Toro, H. H. Schmitt
Summary: The Light Mantle landslide is a hypermobile landslide on the Moon. The origin of its hypermobility remains undetermined, as the proposed mechanisms are difficult to prove due to lack of theoretical and experimental support and scarcity of field data. Friction experiments under vacuum show that localized dynamic friction weakening does not occur in lunar analog anorthosite-bearing gouges, suggesting other fluidization-related mechanisms may have contributed to the initiation of the landslide. Microstructural observations in the experiments and core samples will provide insights into the emplacement processes of the landslide.
JOURNAL OF GEOPHYSICAL RESEARCH-PLANETS
(2023)
Article
Geochemistry & Geophysics
Friedrich Hawemann, Neil Mancktelow, Sebastian Wex, Giorgio Pennacchioni, Alfredo Camacho