Collision of continental corner from 3-D numerical modeling

Li, Zhong‐Hai; Xu, Zhiqin; Gerya, Taras; Burg, Jean‐Pierre

doi:10.1016/j.epsl.2013.08.034

Cited by 147 publications

(132 citation statements)

References 93 publications

Supporting

Mentioning

128

Contrasting

Order By: Relevance

“…The density model supports a hypothesis of slab break-off of the Indian and Eurasian plates in the Ladakh -Karakoram segment, and of the Indian plate in the Hindu Kush-Pamir region, whereas the Eurasian plate drastically underthrusts deeper (c. 200 km), causing deep seismicity in the Hindu Kush-Pamir section. Considering the density structure across the two sections and the numerical simulations (Li et al 2013), it appears that subduction of the Eurasian plate has been faster than the Indian plate in the study region for slab break-off at a shallower depth for the Indian plate and a greater depth for the Eurasian plate.…”

Section: Resultsmentioning

confidence: 99%

The lithospheric density structure below the western Himalayan syntaxis: tectonic implications

Tiwari

Mishra

Pandey

2015

View full text Add to dashboard Cite

The differences in the tectonic regimes of the western part of the India -Asia collision zone (western Himalayan syntaxis), consisting of the Ladakh-Karakoram, Hindu Kush and Pamir terrains, are examined through the analyses and modelling of gravity anomalies, computed from global gravity model and terrestrial data. Long-wavelength (.450 km) anomalies are related to isostatic compensation and correspond to topographic variations. The short-wavelength gravity highs are primarily due to upthrust blocks and are mostly linked to crustal seismicity. The intermediate depth-focused earthquake region of Hindu Kush-Pamir is characterized by a gravity low probably caused by crustal underthrusting. The deep density structure of the crust and upper mantle constructed from the modelling of gravity anomalies with constraints from seismological information suggests crustal underthrusting of the Indian and the Asian plates in the Hindu Kush-Pamir section unlike that in the Ladakh-Karakoram region, where underthrust Indian lithosphere underplates beneath the Asian plate. The density model supports a hypothesis of slab breakoff of Indian and Eurasian plates in the Ladakh-Karakoram segment, and of the Indian plate in the Hindu Kush-Pamir region, whereas the Eurasian plate drastically underthrusts deeper (c. 200 km), causing deep seismicity in the Hindu Kush-Pamir section.

show abstract

Section: Resultsmentioning

confidence: 99%

The lithospheric density structure below the western Himalayan syntaxis: tectonic implications

Tiwari

Mishra

Pandey

2015

View full text Add to dashboard Cite

show abstract

“…After inter-continental collision orogeny (Late Triassic to Early Jurassic), Dabashan orocline continue reshaping during Late Jurassic to Early Cretaceous, proved by the sediment sequence and strata unconformity (Dong et al, 2005(Dong et al, , 2008Meng et al, 2005;Shi et al, 2007Shi et al, , 2012Li et al, 2007;Qu et al, 2009;Hu et al, 2012), isotopy dating (Cheng and Yang, 2009;Hu et al, 2009;Liu et al, 2011;Li et al, 2010Li et al, , 2012Li et al, , 2013, and apatite fission-track (Shen et al, 2009;Xu et al, 2010;Li et al, 2010, Shi et al, 2012Hu et al, 2012).…”

Section: Discussionmentioning

confidence: 99%

The geological and geodynamic condition on the formation of the Dabashan thrust nappe structure: Based on FLAC numerical modelling

Zhang¹,

Dong²

2016

Earth sci. res. j.

View full text Add to dashboard Cite

The Dabashan thrust nappe structure at the southern margin of the Qinling orogenic belt suffered at least two stages of evolution which are Late Triassic plate subduction collisional orogeny between North China block, Qinling micro-plate and Yangtze block followed by intracontinental orogeny since the Meso-Cenozoic. A prominent topography characteristic within the Dabashan area is a southwestward extrusive arc (Bashan Arc fault) that is one of key factors to understand the geodynamic condition of the Dabashan thrust nappe structure.In this work, two-dimensional plan-view models are constructed to simulate the collisional and intracontinental orogenic movements, and the factors that may control the formation of the Bashan Arc fault are analysed. The modelling results show that the compressive stress produced by the plates collision along both north and south boundaries is the main driving force. The dextral shearing derived from the inconsistent shape on the block margins is the main controller. Rigid tectonic units such as Bikou and Hanan-Micangshan terranes, Foping and Wudang domes, as well as Shennongjia-Huangling anticline also contribute as "anchor" effects. Additionally, the rheology properties of rock material in the Dabashan area affect the shape of the arc.La estructura de la falla de cabalgamiento de las montañas Dabashan en el margen sur del cinturón orogénico de Qinling sufrió por lo menos dos etapas de evolución, la colisión orogénica del Triásico Superior entre el bloque de la China del Norte, la microplaca de Qinling y el bloque Yangtze, y la orogénesis intracontinental desde el Meso-Cenozoico. Una característica topográfica prominente del área de Dabashan es un arco extrusivo (falla Arco de Bashan) hacia el suroeste, que es un factor determinante para entender la condición geodinámica de la falla de cabalgamiento en las montañas Dabashan. En este trabajo se construyeron modelos bidimensionales planos para simular los movimientos de colisión e intracontinental orogénicos y se analizaron los factores que podrían controlar la formación de la falla del Arco de Bashan. Los resultados del modelado muestran que el esfuerzo de compresión producido por las placas de colisión en los límites norte y sur es la principal fuerza impulsora de la falla. La principal controladora es la fuerza de cizallamiento dextral derivada de la forma inconsistente en los margenes del bloque. Las unidades tectónicas rígidas como los terrenos Bikou y HananMicangshan, el domo Foping y Wudang, al igual que el anticlinal Shennongjia-Huangling tienen funciones de ancla. Adicionalmente, las propiedades reológicas del material rocoso en el área Dabashan afectan la forma del arco. Condición geológica y geodinámica para la formación estructural de la falla de cabalgamiento en las montañas Dabashan basada en el modelo numérico del software FLAC B2 Xiaoning Zhang and Yunpeng Dong. ABSTRACT RESUMEN

show abstract

“…Previous studies helped our understanding of the mechanisms of the BAB formation through 2-D (Arcay et al, 2008;Gerya and Meilick, 2011) and laterally heterogeneous 3-D models (Capitanio and Replumaz, 2013;Li et al, 2013), and the episodicity in backarc tectonic regimes (Clark et al, 2008;Baitsch-Ghirardello et al, 2014). However, until now, all these aspects have been studied separately.…”

Section: Models Of Continental Collision and Backarc Basin Developmentmentioning

confidence: 99%

How collision triggers backarc extension: Insight into Mediterranean style of extension from 3-D numerical models

Magni

Faccenna

Hunen

et al. 2014

Geology

View full text Add to dashboard Cite

Use policyThe full-text may be used and/or reproduced, and given to third parties in any format or medium, without prior permission or charge, for personal research or study, educational, or not-for-prot purposes provided that:• a full bibliographic reference is made to the original source • a link is made to the metadata record in DRO • the full-text is not changed in any way The full-text must not be sold in any format or medium without the formal permission of the copyright holders.Please consult the full DRO policy for further details.

show abstract

Collision of continental corner from 3-D numerical modeling

Cited by 147 publications

References 93 publications

The lithospheric density structure below the western Himalayan syntaxis: tectonic implications

The lithospheric density structure below the western Himalayan syntaxis: tectonic implications

The geological and geodynamic condition on the formation of the Dabashan thrust nappe structure: Based on FLAC numerical modelling

How collision triggers backarc extension: Insight into Mediterranean style of extension from 3-D numerical models

Contact Info

Product

Resources

About