Results 251 to 260 of about 14,421 (305)

Tectonic stresses in the lithosphere

Tectonics, 1983
Various types of observables (earthquake focal mechanisms, in situ measurements and geological deformations) give information about the large scale lithospheric stress field. The latter has often been explained by postulating appropriate forces acting at the edges and beneath the plates. This approach ignores the role of mass heterogeneities within the
Luce Fleitout, Claude Froidevaux
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Tectonic stress in the plates

Reviews of Geophysics, 1979
The state of stress in the lithosphere provides strong constraints on the forces acting on the plates. The directions of principal stresses in the plates as indicated by midplate earthquake mechanisms, in situ stress measurements, and stress‐sensitive geological features are used to test plate tectonic driving force models, under the premises that ...
Randall M. Richardson, Sean C. Solomon, Norman H. Sleep   +2 more
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Apparent stress and stress drop for intraplate earthquakes and tectonic stress in the plates

pure and applied geophysics, 1977
The magnitude of shear stress in the lithosphere is bounded from below by the apparent stress and stress drop during intraplate earthquakes. Apparent stresses and stress drops for a number of mid-plate earthquakes are calculated from the earthquake magnitude, SH wave amplitude spectra, and estimates of the length of the fault zone.
Randall M. Richardson, Sean C. Solomon
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Exploration of numerical simulation on paleo-tectonic stress field

Procedia Earth and Planetary Science, 2009
This paper analyzed the numerical simulation method of Paleo-tectonic stress field from three aspects: tectonic simulation target, establishment of the tectonic model, and tectonic modeling.
Chun-mei, Zhou, Xian-fu, Li, Sheng-wei, Wang, Ze-jun, Zhang   +3 more
exaly   +2 more sources

The origin of tectonic stress in the lithosphere

Tectonophysics, 1984
Abstract The sources of lithospheric stress and their distinctive features are briefly reviewed. It is suggested that there are two main categories of lithospheric stress: renewable stress which persists despite continuing stress relaxation and non-renewable stress which can be dissipated by relief of the initial strain.
M.H.P. Bott, N.J. Kusznir
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Tectonic Stresses in France

1980
A flat jack method has been used to determine the principal stress axes in the Jurassic limestone of the basin of Paris and in neighbouring regions. The results have been compared with a few overcoring measurements in boreholes of a few meters.
C. Paquin, C. Froidevaux
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Global patterns of tectonic stress

Nature, 1989
Regional patterns of present-day tectonic stress can be used to evaluate the forces acting on the lithosphere and to investigate intraplate seismicity. Most intraplate regions are characterized by a compressional stress regime; extension is limited almost entirely to thermally uplifted regions.
Zoback, Mary Lou, Zoback, Mark D., Adams, J., Assumpção, M., Bell, S., Bergman, E. A., Blümling, P., Brereton, N. R., Denham, D., Ding, J., Fuchs, K., Gay, N., Gregersen, S., Gupta, H. K., Gvishiani, A., Jacob, K., Klein, R., Knoll, P., Magee, M., Mercier, J. L., Müller, B. C., Paquin, C., Rajendran, K., Stephansson, O., Suarez, G., Suter, M., Udias, A., Xu, Z. H., Zhizhin, M.   +28 more
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Central Europe: Active or Residual Tectonic Stresses

pure and applied geophysics, 1977
The regional stress field in the Western Alps and their northern foreland has been investigated by in situ stress determinations. More than 600 strain relief measurements were made with resistance strain gages in boreholes carried out in mines, tunnels and quarries. The stresses calculated and data obtained from other papers were used to get a detailed
Gerhard Greiner, J. Henning Illies
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Tectonic Stress Fields and Karst

2014
Many natural causes exist controlling the formation of fractures. The rock properties relating to the brittleness is one of the most important of them for the variations in natural fracture density. These properties may vary from regional to local scale; they may vary significantly within the rock formations and between formations.
Stefan Shanov, Konstantin Kostov
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The sources of lithospheric tectonic stresses

Philosophical Transactions of the Royal Society of London. Series A: Physical and Engineering Sciences, 1991
Abstract The stresses associated with large-scale tectonic deformation have three possible origins: (1) plate-boundary forces counterbalanced by viscous drag beneath the plates; (2) density heterogeneities situated within the plates (say at depths shallower than 200 km); (3) mass heterogeneities in the deep mantle.
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