Results 81 to 90 of about 77,777 (186)

Present-day stress state of the Shanxi tectonic belt

open access: yesGeodynamics & Tectonophysics, 2012
The Shanxi tectonic belt is a historically earthquakeabundant area. For the majority of strong earthquakes in this area, the distribution of earthquake foci was controlled by the N–S oriented local structures on the tectonic belt. Studies of the present stress state of the Shanxi tectonic belt can contribute to the understanding of the relationship ...
Wang Kaiying, Ma Jin, Diao Guiling
openaire   +3 more sources

Present-day Mars' seismicity predicted from 3-D thermal evolution models of interior dynamics [PDF]

open access: yes, 2018
©2018. American Geophysical UnionThe Interior Exploration using Seismic Investigations, Geodesy and Heat Transport mission, to be launched in 2018, will perform a comprehensive geophysical investigation of Mars in situ.
Breuer, D.   +8 more
core   +3 more sources

A stress-controlled mechanism for the intensity of very large magnitude explosive eruptions [PDF]

open access: yes, 2011
Large magnitude explosive eruptions are the result of the rapid and large-scale transport of silicic magma stored in the Earth's crust, but the mechanics of erupting teratonnes of silicic magma remain poorly understood.
Costa, Antonio   +3 more
core   +1 more source

Evolution of the overlying strata structure and characteristics of ground pressure behavior under the influence of tectonic stress

open access: yesFrontiers in Earth Science
The evolution of overlying strata structures significantly influences the manifestation of ground pressure behavior in working faces. The mechanism through which tectonic stress influences the evolution of overlying rock structures remains unclear.
Zhijie Zhu   +4 more
doaj   +1 more source

Up-squeezing of magma under tectonic stress.

open access: yesJournal of Physics of the Earth, 1989
That some volume of magma could be squeezed up from the magma reservoir triggering a volcanic eruption when compressional tectonic stress is strengthened by plate motion has been proposed as a possible explanation of successive occurrences of volcanic eruption and large earthquake.
Tsuneji RIKITAKE, Ryosuke SATO
openaire   +2 more sources

Study on mechanical properties and fractal evolution law of containing tectonic coal combination

open access: yesMeikuang Anquan
To study the mechanical properties of tectonic coal combination specimens, based on the occurrence characteristics of coal seam in a high gas mine, this study carried out the mechanical properties test experiment of loading and fracture process of ...
Qiudong SHAO   +6 more
doaj   +1 more source

Tectonic stress fields in Northeast Bulgaria

open access: yesGeologica Balcanica, 1990
The reconstruction of the stress fields in Northeast Bulgaria by means of tectonic fracture patterns and physical anisotropy of rock species from the Lower Cretaceous period up to the Upper Pliocene shows that in the investigated area exists a stable trend towards a clockwise rotati on of the maximum and minimum compress ion axes.
openaire   +1 more source

Ambient tectonic stress as fragile geological feature [PDF]

open access: yesGeochemistry, Geophysics, Geosystems, 2014
Strong seismic waves produce frictional failure within shallow pervasively cracked rocks. Distributed failure preferentially relaxes ambient tectonic stresses, providing a fragility measure of past strong shaking. Relaxation of the regional fault-normal compression appears to have occurred within granite from 768 m down to ∼1000–1600 m depth at the ...
openaire   +1 more source

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