globalchange  > 气候变化与战略
DOI: 10.1016/j.tecto.2020.228462
论文题名:
Interaction between perpendicularly-trending thrust wedges and its impact on foreland deformation: Insights from analogue modelling
作者: Soto R.; Vendeville B.C.; Graveleau F.
刊名: Tectonophysics
ISSN: 00401951
出版年: 2020
卷: 786
语种: 英语
中文关键词: Analogue modelling ; Foreland deformation ; Superimposed stress fields ; Thrust wedges
英文关键词: Deformation ; Analogue modelling ; Analogue models ; Continuous structures ; Experimental devices ; Fold-and-thrust belts ; Foreland deformation ; Strain partitioning ; Vertical-axis rotation ; Structural geology ; analog model ; basin analysis ; decollement ; deformation ; fold and thrust belt ; foreland basin ; tectonics ; Iberian Cordillera ; New Zealand ; South Island ; Southern Alps ; Spain
英文摘要: In this work we used analogue models in order to better understand how two orthogonal fold-and-thrust belts may interact in the foreland and influence the geometry and kinematics of the resulting structures. Our experimental device has two vertical mobile backstops oriented perpendicular with respect to each other, independent and moving coevally with variable or equal velocities. There are strong contrasts between our models' results and thrust wedges generated using a unique indenter and simple convergence. Thrust-wedge deformation in front of two perpendicular indenters overlying a basal viscous décollement progressed following two major stages: (I) independent growth of each tectonic wedges, then (II) formation of major, oblique and continuous structures that nucleated in the foreland of both indenters. In some models, the two indenters moving at different velocities favoured the interference and superimposition of structures, strain partitioning, structure curvature, and vertical-axis rotation. Comparison with the Friulian-Venetian basin (Southern Alps) and the Altomira-Loranca thrust belt (Iberian Chain, Central Spain) supports the hypothesis that foreland deformation can strongly vary if a basal viscous décollement is present during the interaction of two-mutually indenters. © 2020 Elsevier B.V.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/170717
Appears in Collections:气候变化与战略

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作者单位: Instituto Geológico y Minero de España (IGME), Unidad de Zaragoza, C/Manuel Lasala 44, 9°B, Zaragoza, 50006, Spain; Univ. Lille, CNRS, Univ. Littoral Côte d'Opale, UMR CNRS 8187, LOG, Laboratoire d'Océanologie et de Géosciences, Villeneuve d'Ascq, F 59 655, France

Recommended Citation:
Soto R.,Vendeville B.C.,Graveleau F.. Interaction between perpendicularly-trending thrust wedges and its impact on foreland deformation: Insights from analogue modelling[J]. Tectonophysics,2020-01-01,786
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