Results 61 to 70 of about 63,977 (303)

On the origin of the North Pacific arcs [PDF]

, 2004
We present a new hypothesis that relates global plate tectonics to the formation of marginal basins, island arcs, spreading ridges and arc-shaped mountain belts around the North Pacific Ocean.
Fornós, Joan J., Gelabert Ferrer, Bernardí, Rodríguez Perea, Antonio, Sàbat i Montserrat, Francesc   +3 more
core   +3 more sources

Blasting effects of cross‐fault deep‐buried excavation on adjacent existing tunnel stability

Deep Underground Science and Engineering, EarlyView.
Based on the theoretical analysis of cylindrical wave propagation in a deep rock mass in the fault with a filling layer, the calculation method of peak particle velocity caused by wave propagation in the existing tunnel is established. The viscoelastic characteristics of a rock mass are examined in the analysis.
Shaobo Chai, Lianzeng Chai, Chao Meng, Kai Liu, Lang Song, Shaojie Zheng   +5 more
wiley   +1 more source

Simulation of a Multi-Stage Stress Field and Regional Prediction of Structural Fractures in the Tucheng Syncline, Western Guizhou, China

Geosciences
The prediction of structural fractures in concealed coal-bearing strata has always been a complex problem. The purpose of this study was to clarify the tectonic evolution of the study area, i.e., the Tucheng syncline, since the coal-forming period and to
Jilin Wang, Lijun Jiang, Tiancheng Cang, Xiaozhi Zhou, Bicong Wang   +4 more
doaj   +1 more source

PRESENTDAY STRESS STATE OF THE SHANXI TECTONIC BELT

Геодинамика и тектонофизика, 2015
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.
Wang Kaiying, Ma Jin, Diao Guiling
doaj   +1 more source

Tectonic stress fields in Northeast Bulgaria

Geologica 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

Rupture propagation in strong earthquake sources and tectonic stress field

Bulletin de la Société Géologique de France, 2013
Abstract Problems of physical basis of earthquake source mechanics are discussed. Results of stress state reconstruction based on the cataclastic analysis of discontinuous dislocations in some seismotectonic active earth crust domains are presented.
R.E. Tatevossian, Yu. L. Rebetsky
openaire   +1 more source

Electro-Magnetic Earthquake Bursts and Critical Rupture of Peroxy Bond Networks in Rocks

, 2006
We propose a mechanism for the low frequency electromagnetic emissions and other electromagnetic phenomena which have been associated with earthquakes. The mechanism combines the critical earthquake concept and the concept of crust acting as a charging ...
Allègre, Alperovich, Andersen, Andersen, Anifrani, Ashby, Bak, Bell, Bianchi, Bouchaud, Bowman, Bowman, Bowman, Bowman, Brehm, Brehm, Bufe, Bufe, Chen, Cliverd, Contoyiannis, D. Sornette, Debate on VAN (special issue), Derr, Dey, Dickinson, Dieterich, Edwards, Eftaxias, Eftaxias, Ellsworth, F. Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Freund, Frid, Friebele, Frost, Fujinawa, Fujinawa, Garcimartin, Gershenzon, Gokhberg, Hayakawa, Heimpel, Helmstetter, Hickman, Huang, Huang, Ivanov, Jaumé, Johansen, Johansen, Johnston, Jones, Jones, Kagan, Kapiris, Kapiris, Kathrein, Keilis-Borok, Keilis-Borok, Keilis-Borok, King, King, King, Knopoff, Kopytenko, Kossobokov, Lei, Lei, Lei, Levin, Lindh, Liu, Liu, Ma, Main, Martelli, Martens, Martin, Mogi, Molchanov, Molchanov, Molchanov, Mora, Moura, Moura, Moura, Naaman, NASDA-CON-960003, Nechad, Nechad, Nitsan, Ohta, Ondoh, Ouillon, Ouillon, Ouzounov, Park, Place, Pulinets, Pulinets, Pulinets, Qiang, Rabinovitch, Raleigh, Regenauer-Lieb, Ricci, Rossman, Roux, Sahimi, Saleur, Sammis, Sammis, Shamir, Smyth, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sornette, Sorokin, Srivastav, St-Laurent, Stauffer, Sykes, Taylor, Tocher, Trigunait, Tronin, Tronin, Tsukuda, Varotsos, Vere-Jones, Vershinin, Wilson, Yasui, Yen, Yoshida, Yoshino, Yukalov, Zhuang, Zlotnicki   +158 more
core   +1 more source

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

, 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, Gottsmann, Joachim, Melnik, Oleg, Sparks, R. S. J.   +3 more
core   +1 more source

Failure mechanism of the coal wall at the working face based on an eccentric compression mechanical model

Deep Underground Science and Engineering, EarlyView.
In this study, the nonuniform distribution of the bearing pressure in front of the coal wall has been revealed based on in situ monitoring data and numerical simulation results. Therefore, an eccentric compression mechanical model of the coal wall was established to study the deformation and failure characteristics of a coal wall. The slenderness ratio
Maolin Tian, Jiabao Wang, Changsheng Wang, Shijie Sun, Lijun Han, Qingbin Meng, Sunhao Zhang   +6 more
wiley   +1 more source

Gravity-flow dominated sedimentation on the Buda paleoslope (Hungary): Record of Late Eocene continental escape of the Bakony unit [PDF]

, 1992
The Upper Eocene sequence of the Buda Hills consists of fluvial and shallow marine conglomerates, sandstones, bioclastic shallow-water limestone, marlstone and pelagic Globigerina marl.
Fodor, László, Fogarasi, Attila, Kázmér, Miklós, Magyari, Árpád   +3 more
core