Results 31 to 40 of about 14,706 (253)

THE MIOCENE AND DEVONIAN MAGMATISM AT THE JUNCTION BETWEEN THE TUVA-MONGOLIAN MASSIF AND SIBERIAN CRATON: COMMON COMPONENT OF MANTLE SOURCES AND ITS ORIGIN

Геодинамика и тектонофизика, 2015
Devonian dikes of the Urik-Belaya and Shagayte-Gol-Urik zones and Miocene lavas of the Urik volcanic field are spatially associated with each other at the structural junction between the Neoproterozoic Tuva-Mongolian massif and Siberian craton.
Sergey V. Rasskazov, Aigul M. Il'yasova, Tatiana A. Yasnygina, Nikolay N. Fefelov   +3 more
doaj   +1 more source

MODELLING OF POSTSEISMIC PROCESSES IN SUBDUCTION ZONES

Геодинамика и тектонофизика, 2015
Large intraplate subduction earthquakes are generally accompanied by prolonged and intense postseismic anomalies. In the present work, viscoelastic relaxation in the upper mantle and the asthenosphere is considered as a main mechanism responsible for the
Irina S. Vladimirova
doaj   +1 more source

Viscoelastic relaxation of the upper mantle and afterslip following the 2014 MW8.1 Iquique earthquake

Earthquake Research Advances, 2021
An improved understanding of postseismic crustal deformation following large subduction earthquakes may help to better understand the rheological properties of upper mantle and the slip behavior of subduction interface.
Zhiping Hu, Yan Hu, Segun Steven Bodunde
doaj   +1 more source

HIGH-MG LAVAS FROM THE DARIGANGA VOLCANIC FIELD IN THE SOUTHEASTERN MONGOLIA: PETROGENETIC MODEL OF MAGMATISM AT THE ASTHENOSPHERE–LITHOSPHERE BOUNDARY

Геодинамика и тектонофизика, 2015
It is revealed that high-Mg lavas (MgO=11.0–15.8 wt. %) are spatially controlled by linear zones extending for more than 90 km and demonstrate chemically distinct differences from moderately-Mg compositions (MgO=3.0–11.0 wt.
Irina S. Chuvashova, Sergey V. Rasskazov, Tatiana A. Yasnygina, Ekaterina A. Mikheeva   +3 more
doaj   +1 more source

3-D multiobservable probabilistic inversion for the compositional and thermal structure of the lithosphere and upper mantle: III. Thermochemical tomography in the Western-Central U.S. [PDF]

, 2016
Acknowledgments We are indebted to F. Darbyshire and J. von Hunen for useful comments on earlier versions of this work. This manuscript benefited from thorough and constructive reviews by W. Levandowski and an anonymous reviewer.
Aoki K., Biegler L., Coltorti M., Eggler D. H., Evans J. R., Gerya T., Kitanidis P. K., Quarteroni A., Turcotte D. L., Van Decar J. C., Winter J. D.   +10 more
core   +2 more sources

SOURCES OF QUATERNARY POTASSIC VOLCANIC ROCKS FROM WUDALIANCHI, CHINA: CONTROL BY TRANSTENSION AT THE LITHOSPHERE–ASTHENOSPHERE BOUNDARY LAYER

Геодинамика и тектонофизика, 2016
Introduction. Transtension is a system of stresses that tends to cause oblique extension, i.e. combined extension and strike slip. Syn-volcanic transtensional deformations of the lithosphere may provide two possible scenarios for control of magmatic ...
S. V. Rasskazov, I. S. Chuvashova, Yi-min Sun, Chen Yang, Zhenhua Xie, T. A. Yasnygina, E. V. Saranina, Zhenxing Fang   +7 more
doaj   +1 more source

Continental Thermal Blanketing Explains the Compositional Dichotomy of the Diffuse Basaltic Province Across Central‐Eastern Asia

Geophysical Research Letters, 2023
A diffuse magmatic province covering central‐eastern Asia continent displays a compositional transition at 120–100 Ma and probably reflects melting initiation in isotopically enriched lithospheric mantle, followed by melting of the asthenosphere. However,
Hong‐Kun Dai, Jian‐Ping Zheng, Qing Xiong, William L. Griffin, Suzanne Y. O’Reilly   +4 more
doaj   +1 more source

Core-mantle boundary deformations and J2 variations resulting from the 2004 Sumatra earthquake

, 2007
The deformation at the core-mantle boundary produced by the 2004 Sumatra earthquake is investigated by means of a semi-analytic theoretical model of global coseismic and postseismic deformation, predicting a millimetric coseismic perturbation over a ...
A. Piersanti, Alfonsi, Banerjee, Bloxham, Boschi, Boschi, Chao, Chao, Cheng, Cox, D. Melini, Dumberry, Dumberry, Dziewonski, Dziewonski, F. Florindo, Florindo, Florindo, Gross, Lambeck, Marquart, Mitrovica, Nostro, P. De Michelis, Park, Piersanti, Piersanti, Pollitz, Sabadini, Tsai, V. Cannelli   +30 more
core   +1 more source

PLUTONIC STRUCTURE OF THE DEEP-SEA BASINS IN THE SEA OF OKHOTSK REGION

Геодинамика и тектонофизика, 2018
The original continental crust of the deep-sea basins in the Sea of Okhotsk region was considerably reworked by tectonic and magmatic processes, whereby it has become substantially denser while less thick.
V. P. Semakin, A. V. Kochergin, T. I. Pitina   +2 more
doaj   +1 more source

Upper mantle anisotropy from shear wave splitting of teleseismic earthquakes in the Kumaun-Garhwal and adjoining area of NW Himalaya

Journal of Asian Earth Sciences: X, 2021
Teleseismic earthquakes data recorded by 8 broadband digital seismic stations deployed in the Kumaun-Garhwal and adjoining area of NW Himalaya are analyzed to investigate the seismic anisotropy in the upper mantle. Shear-wave splitting parameters (ɸ and ∂
Narendra Kumar, Kailash Kumar Gautam, Minakshi Mishra, Sushil Kumar, Parveen Kumar   +4 more
doaj   +1 more source