NDLI: Coupling between different layers of the lithosphere under horizontal drag underneath

Content Provider	Springer Nature Link
Author	Ning, Jieyuan Zang, Shaoxian Wang, Shuguang Wei, Rongqiang Liang, Guoping
Copyright Year	2003
Abstract	Based on a layered Theological model of the lithosphere, the velocity and stress distributions in the lithosphere under horizontal drag underneath were calculated using viscoelastic finite element method of plain strain with finite deformation. In the simulation, different conditions of drag and blocking were assumed to study their influences on the stress distribution and the coupling between different layers. Blocking depth has little influence on the stress level in the whole area and the coupling between different layers, but influences the stress state in the area around the blocking. The area covered by the high stress anomaly becomes larger when the blocking depth becomes deeper, but the magnitude of the value of the maximum shear stress decreases. The greater the viscosity differences between different layers of the lithosphere, the greater the possibility of decoupling between them. Under the drag of normal mantle convection (the convection velocity is about 20 cm · a$^{−1}$), a lithosphere with a Theological structure similar to that of North China could not have decoupling between different layers, while could have stress distribution with magnitude of several MPa to tens of MPa and could have anomalous areas with stress accumulation if the geological structure is complicated.
Starting Page	41
Ending Page	55
Page Count	15
File Format	PDF
ISSN	10069313
Journal	Science in China Series D: Earth Sciences
Volume Number	46
Issue Number	2
e-ISSN	18622801
Language	English
Publisher	Science in China Press
Publisher Date	2003-01-01
Publisher Place	Beijing
Access Restriction	Subscribed
Subject Keyword	continental dynamics lithosphere Theological layering coupling between different layers Geosciences
Content Type	Text
Resource Type	Article
Subject	Earth and Planetary Sciences

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