Geodynamic evaluation of the pacific tectonic model for chortis block evolution using 3D numerical models of subduction

Moreno, Erika; Manea, Marina

doi:10.1016/j.jsames.2021.103604

Cited by 7 publications

(8 citation statements)

References 69 publications

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“…In this model the plate age and convergence rate are asynchronous (i.e., a high convergence rate corresponds to a young plate age, and vice versa), and we obtain a slab geometry that corresponds to a rather shallow subduction style. This is consistent with the observation that young slab characterized by periods of high convergence show a predisposition to shallow or even flat subduction, such is the case of the subducted Cocos plate beneath Central Mexico 36 – 38 .…”

Section: Discussionsupporting

confidence: 91%

“…The subduction of a young and buoyant slab in conjunction with a low subduction angle prevents the formation of volcanic arcs near the trough 36 , 55 . This is consistent with global observations where the volcanism migrates towards the interior of the continental plate when the dip angle decreases, such is the case of Trans-Mexican-Volcanic arc (TMVA) in Central Mexico 36 – 38 .…”

Section: Discussionsupporting

confidence: 90%

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Numerical modeling of subduction and evaluation of Philippine Sea Plate tectonic history along the Nankai Trough

Moreno,

Manea,

Manea

et al. 2023

Sci Rep

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The subduction of the Philippine Sea (PHS) plate along the Nankai Trough in in southwest Japan is a relatively recent process compared with subduction along the Japan Trench in northeast Japan. However, the tectonic evolution of the PHS plate along the Nankai Trough is still controversial and not fully understood. There are several competing hypotheses based on different estimates for the time variations of convergence rate and plate age. Our study employs numerical modelling of subduction in order to evaluate the slab evolution for the last 15 Myr and aims to evaluate each tectonic scenario against the present-day slab geometry along a profile passing through the Shikoku and Chugoku regions. The modelling strategy involves a parameter study where subduction initiation and various subduction parameters are analyzed in terms of subduction geometry evolution. Two-dimensional visco-elasto-plastic numerical simulations of spontaneous bending subduction predict that convergence rate and plate age variations play an important role in the evolution of subduction geometry. Modeling results after 15 Myr of evolution reveal that the tectonic model based on a high convergence rate between ~ 15 Ma and ~ 3 Ma produces a slab geometry that agrees well with the observed present-day slab shape specific for the Shikoku and Chugoku regions.

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Section: Discussionsupporting

confidence: 91%

Section: Discussionsupporting

confidence: 90%

Numerical modeling of subduction and evaluation of Philippine Sea Plate tectonic history along the Nankai Trough

Moreno,

Manea,

Manea

et al. 2023

Sci Rep

Self Cite

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“…It has been hypothesized that this geographic separation occurred as a result of the displacement of the Chortis Block in a west-to-east direction along the Mexican Pacific coast approximately 45-38 Mya (Cuevas-Chapa, 2016). However, there is still uncertainty about the validity of this displacement model due to the complex tectonic history of the Caribbean (Moreno and Manea, 2021). An alternative hypothesis, proposed here, is that during the Oligocene-Miocene, this group was more diverse and widespread along coastal areas, but the marine fluctuations during the Pleistocene and Holocene led to extinctions that resulted in the geographic separation of these species.…”

Section: Influence Of the Pleistocene On The Origin Of The Ypbp Endem...mentioning

confidence: 99%

Biogeographical History of the Yucatan Peninsula Endemic Flora (Spermatophyta) from a Phylogenetic Perspective1

Ramírez-Díaz,

Ramírez-Morillo,

Cortés-Flores

et al. 2023

Harvard Papers in Botany

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“…The Central America and Lesser Antilles Subduction System records waxing and waning in face-to-face double subduction. Unlike the North and South American Plates that obducted to the East Pacific Plate forcing single subductions with faster trench retreat 15,16 and flatter slabs 17,28 (Fig. 1c), the Central American region developed faceto-face double subduction since the Late Cretaceous 12,13,14 (Figs.…”

Section: Plate Motion Reorganization In Natural Double Subductionmentioning

confidence: 99%

Onset of Double Subduction Controls Plate Motion Reorganization

Zhang

Liao

Gerya

2023

Preprint

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Face-to-face double subduction systems, in which two oceanic plates are subducted toward each other, are common elements of plate tectonics. Two subduction zones in such systems are typically uneven in age and their subduction dynamics vary both temporarily and spatially and remain enigmatic. Here we use 2D geodynamic numerical modeling to show that plate motion partitioning in these subduction systems is dynamically unstable and strongly varies in time. As the result of this instability, the waxing younger subduction zone may gradually absorb the plate convergence from the waning older one. Consequently, the trench of the older subduction zone may stop retreating and its subduction rate notably decreases. The stress state of the overriding plate and the mantle flow field between the two simultaneously active trenches reflect this dynamical transition from older subduction to younger subduction activity. Our results allow us to classify several different characteristic trench migration and overriding plate motion patterns between older and younger subduction, which provide a reference to interpret the past and predict the future evolution of several key double subduction regions found in modern Earth.

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Geodynamic evaluation of the pacific tectonic model for chortis block evolution using 3D numerical models of subduction

Cited by 7 publications

References 69 publications

Numerical modeling of subduction and evaluation of Philippine Sea Plate tectonic history along the Nankai Trough

Numerical modeling of subduction and evaluation of Philippine Sea Plate tectonic history along the Nankai Trough

Biogeographical History of the Yucatan Peninsula Endemic Flora (Spermatophyta) from a Phylogenetic Perspective1

Onset of Double Subduction Controls Plate Motion Reorganization

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