Global strength and elastic thickness of the lithosphere

被引:68
|
作者
Tesauro, Magdala [1 ,2 ]
Kaban, Mikhail K. [1 ,3 ]
Cloetingh, Sierd A. P. L. [2 ]
机构
[1] German Res Ctr Geosci GFZ, Potsdam, Germany
[2] Univ Utrecht, Dept Earth Sci, NL-3508 TC Utrecht, Netherlands
[3] IPE, Moscow, Russia
关键词
lithospheric strength; effective elastic thickness; global model; CONTINENTAL LITHOSPHERE; MANTLE TEMPERATURES; RHEOLOGY; CONSTRAINTS; GRAVITY; STRESS; EUROPE; TOPOGRAPHY; CRUSTAL;
D O I
10.1016/j.gloplacha.2011.12.003
中图分类号
P9 [自然地理学];
学科分类号
0705 ; 070501 ;
摘要
The strength and effective elastic thickness (Te) of the lithosphere control its response to tectonic and surface processes. Here, we present the first global strength and effective elastic thickness maps, which are determined using physical properties from recent crustal and lithospheric models. Pronounced strength contrasts exist between old cratons and areas affected by Tertiary volcanism, which mostly coincide with the boundaries of seimogenic zones. Lithospheric strength is primarily controlled by the crust in young (Phanerozoic) geological provinces characterized by low Te (similar to 25 km), high topography (> 1000 m) and active seismicity. In contrast, the old (Achaean and Proterozoic) cratons of the continental plates show strength primarily in the lithospheric mantle, high Te (over 100 km), low topography (<1000 m) and very low seismicity. (c) 2012 Elsevier B.V. All rights reserved.
引用
收藏
页码:51 / 57
页数:7
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