34 - State of stress in the Earth's lithosphere
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Abstract
The state of stress in the lithosphere is the result of the forces acting upon and within it. Knowledge of the magnitude and distribution of these forces can be combined with mechanical, thermal and rheological constraints to examine a broad range of lithospheric deformational processes. For example, such knowledge contributes to a better understanding of the processes that both drive and inhibit lithospheric plate motions as well as the forces responsible for the occurrence of crustal earthquakes − both along plate boundaries and in intraplate regions.
Although the topic of this chapter is the state of stress in the Earth's lithosphere, the comments below come primarily from the perspective of the state of stress in the brittle upper crust. As defined by the depth of shallow earthquakes, the brittle crust extends to ˜15–20 km depth at most continental locations around the world. This perspective is adopted here because nearly all the data available on lithospheric stress come from the upper crust of continents. Furthermore, in the sections that follow, we argue that, to first order, the state of stress in the brittle crust results from relatively large-scale lithospheric processes so that knowledge of crustal stress can be used to constrain the forces involved in these processes.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | 34 - State of stress in the Earth's lithosphere |
| Series title | International Geophysics |
| DOI | 10.1016/S0074-6142(02)80237-6 |
| Volume | 81 |
| Issue | Part A |
| Year Published | 2002 |
| Language | English |
| Publisher | Elsevier |
| Description | 10 p. |
| First page | 559 |
| Last page | 568 |
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