The structural evolution of pull‐apart basins in response to changes in plate motion

Farangitakis, Georgios-Pavlos; McCaffrey, Ken; Willingshofer, Ernst; Allen, Mark B.; Kalnins, L. M.; Hunen, Jeroen van; Persaud, Patricia; Sokoutis, Dimitrios

doi:10.1111/bre.12528

Cited by 24 publications

(9 citation statements)

References 75 publications

(218 reference statements)

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“…The evolution of Liaodong Bay is remarkably influenced by dextral shear activity during this period with strike‐slip intensity weakens from eastern portion to western portion of Liaodong Bay (Yan et al, 2022; T. Yang et al, 2016; Zhang et al, 2017; G. Zhu et al, 2012). The rate of tectonic subsidence remains low, with an average of 0.121 mm/a (Fang et al, 2017; Farangitakis et al, 2021; Hsiao et al, 2010; Huang et al, 2015). The Pacific Plate subducts westward at a high convergence rate (90 mm/a) between the end of the Palaeogene and the start of the Neogene (Hsiao et al, 2004; Northrup et al, 1995; Yin, 2010).…”

Section: Discussionmentioning

confidence: 99%

“…Zhu et al, 2012). The rate of tectonic subsidence remains low, with an average of 0.121 mm/a (Fang et al, 2017;Farangitakis et al, 2021;Hsiao et al, 2010;Huang et al, 2015). The Pacific Plate subducts westward at a high convergence rate (90 mm/a) between the end of the Palaeogene and the start of the Neogene (Hsiao et al, 2004;Northrup et al, 1995;Yin, 2010).…”

Section: Discussionmentioning

confidence: 99%

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The fault activity, tectonic subsidence history, and geodynamics of syn‐depositional faults during the Palaeogene in Liaodong Bay, Bohai Bay Basin

Xia

Lin

et al. 2022

Geological Journal

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The fault activity, tectonic subsidence history, and geodynamics are analysed based on borehole information and seismic datasets from Liaodong Bay. The results reveal that the faults are intensely active (resulting in the faults that are characterized by more lengths and more throws) both in the northern and southern portions of the study area, while the faults are not active in the central portion of the study area during Kongdian Formation and Shahejie Formation deposition. However, the faults are generally more active in the northern portion of the study area than that in the southern portion of the study area. In contrast, the faults are intensely active in central and southern portion of the study area during Dongying Formation deposition. The numerous syn‐depositional faults, which are intensely active, result in southward movement of depositional centre. The tectonic subsidence history of wells (including well JZ‐A, well JZ‐B, well JZ‐C, well JZ‐D, well JX‐A, and well SZ‐A) in Liaodong Bay indicates that it shows obvious episodic tectonic evolution during the Palaeogene in Liaodong Bay. The episodic tectonic movement (initial rifting, rifting climax, thermal subsiding, and strike‐slip rifting) corresponds to Kongdian Formation and Shahejie Formation deposition, and Dongying Formation deposition, respectively. The spatio‐temporal variation of tectonic subsidence history is closely related to fault activity. The analysis results of balanced cross‐sections show that faults are intensely active during Dongying Formation deposition. However, a few faults are much active than that during Shahejie Formation deposition. There is a slight decrease in tectonic activity intensity during Kongdian Formation and Shahejie Formation deposition. In contrast, there is a significant decrease in tectonic activity intensity during third‐member to first‐member of Dongying Formation deposition. The tectonic activity intensity tends to cease by the end of Dongying Formation.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

The fault activity, tectonic subsidence history, and geodynamics of syn‐depositional faults during the Palaeogene in Liaodong Bay, Bohai Bay Basin

Xia

Lin

et al. 2022

Geological Journal

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“…The deformation regime then evolves to transtension and forms pull-apart basins separated by strike-slip shear zones parallel to the plate motion (e.g. Farangitakis et al, 2021;Persaud et al, 2017;van Wijk et al, 2017). The system then reaches a stable partitioned state with large transform faults in the central part of the rift separating pull-apart basins and normal faults on the edges parallel to the rift trend.…”

Section: High-obliquity Rift Systemsmentioning

confidence: 99%

Looking beyond kinematics: 3D thermo-mechanical modelling reveals the dynamics of transform margins

Jourdon

Kergaravat

Duclaux

et al. 2022

Preprint

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<p>Transform margins represent ~30% of nonconvergent margins worldwide. Their formation and evolution have traditionally been addressed through kinematic models that do not account for the mechanical behaviour of the lithosphere. In this study, we use high-resolution 3D numerical thermo-mechanical modelling to simulate and investigate the evolution of intra-continental strain localization under oblique extension. The obliquity is set through velocity boundary conditions that range from 15 (high obliquity) to 75 (low obliquity) every 15 for rheologies of strong and weak lower continental crust. Numerical models show that the formation of localized strike-slip shear zones leading to transform continental margins always follows a thinning phase during which the lithosphere is thermally and mechanically weakened. For low- (75) to intermediate-obliquity (45) cases, the strike-slip faults are not parallel to the extension direction but form an angle of 20 to 40 with the plate motion vector, while for higher obliquities (30 to 15) the strike-slip faults develop parallel to the extension direction. Numerical models also show that during the thinning of the lithosphere, the stress and strain re-orient while boundary conditions are kept constant. This evolution, due to the weakening of the lithosphere, leads to a strain localization process in three major phases: (1) initiation of strain in a rigid plate where structures are sub-perpendicular to the extension direction; (2) distributed deformation with local stress field variations and formation of transtensional and strikeslip structures; (3) formation of highly localized plate boundaries stopping the intra-continental deformation. Our results call for a thorough re-evaluation of the kinematic approach to studying transform margins.</p>

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“…As a consequence, the whole rift-transform fault system evolves synchronously during continental thinning and oceanic accretion. The onset of Bonini et al, 2019;Ferrari et al, 2018;Fletcher et al, 2007). Large white arrows display the plate motion between the North American Plate and the Pacific Plate from Plattner et al, (2007).…”

Section: Introductionmentioning

confidence: 99%

Looking beyond kinematics: 3D thermo-mechanical modelling reveals the dynamics of transform margins

et al. 2021

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Abstract. Transform margins represent ∼ 30 % of non-convergent margins worldwide. Their formation and evolution have traditionally been addressed through kinematic models that do not account for the mechanical behaviour of the lithosphere. In this study, we use high-resolution 3D numerical thermo-mechanical modelling to simulate and investigate the evolution of intra-continental strain localization under oblique extension. The obliquity is set through velocity boundary conditions that range from 15∘ (high obliquity) to 75∘ (low obliquity) every 15∘ for rheologies of strong and weak lower continental crust. Numerical models show that the formation of localized strike-slip shear zones leading to transform continental margins always follows a thinning phase during which the lithosphere is thermally and mechanically weakened. For low- (75∘) to intermediate-obliquity (45∘) cases, the strike-slip faults are not parallel to the extension direction but form an angle of 20∘ to 40∘ with the plate motion vector, while for higher obliquities (30∘ to 15∘) the strike-slip faults develop parallel to the extension direction. Numerical models also show that during the thinning of the lithosphere, the stress and strain re-orient while boundary conditions are kept constant. This evolution, due to the weakening of the lithosphere, leads to a strain localization process in three major phases: (1) initiation of strain in a rigid plate where structures are sub-perpendicular to the extension direction; (2) distributed deformation with local stress field variations and formation of transtensional and strike-slip structures; (3) formation of highly localized plate boundaries stopping the intra-continental deformation. Our results call for a thorough re-evaluation of the kinematic approach to studying transform margins.

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The structural evolution of pull‐apart basins in response to changes in plate motion

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 24 publications

References 75 publications

The fault activity, tectonic subsidence history, and geodynamics of syn‐depositional faults during the Palaeogene in Liaodong Bay, Bohai Bay Basin

The fault activity, tectonic subsidence history, and geodynamics of syn‐depositional faults during the Palaeogene in Liaodong Bay, Bohai Bay Basin

Looking beyond kinematics: 3D thermo-mechanical modelling reveals the dynamics of transform margins

Looking beyond kinematics: 3D thermo-mechanical modelling reveals the dynamics of transform margins

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