Results 11 to 20 of about 479 (137)

Speed structure of the mantle of the border of the Eastern European and West European platforms

Геофизический журнал, 2021
This work is devoted to studying the velocity structure of the mantle of the border area of the East European and West European platforms in the crust separated by the Teiserre-Tornquist zone.
T. A. Tsvetkova, I. V. Bugaenko, L. N. Zaets   +2 more
doaj   +1 more source

Dehydration Melting Below the Undersaturated Transition Zone

Geochemistry, Geophysics, Geosystems, 2020
A reflector 70–130 km below the base of the transition zone beneath Tibet is observed in receiver functions and underside seismic reflections, at depths consistent with the transition of garnet to bridgmanite.
W. R. Panero, C. Thomas, R. Myhill, J. S. Pigott, C. Raepsaet, H. Bureau   +5 more
doaj   +1 more source

THE STRUCTURE OF LOW-VELOCITY ZONES IN THE MANTLE OF THE NORTHERN EUROPE

Transactions of the Karelian Research Centre of the Russian Academy of Sciences, 2015
The areas of low-velocity middle mantle shift into the transition zone are distinguished according to 3-d P-velocity model of the Fennoscandian shield mantle and its surroundings using Taylor approximation method.
Татьяна Цветкова, Игорь Валентинович Бугаенко, Лариса Николаевна Заец, Tatiana Tsvetkova, Igor Bugaienko, Larisa Zaiets   +5 more
doaj   +1 more source

Mantle transition zone thickness beneath Ross Island, the Transantarctic Mountains, and East Antarctica

Geophysical Research Letters, 2008
The thickness of the mantle transition zone beneath Ross Island, and parts of the Transantarctic Mountains and East Antarctic Craton has been mapped using data from the 2000–2003 Transantarctic Mountain Seismic Experiment to determine if, as indicated by
Angela Marie Reusch, Andrew A. Nyblade, Margaret H. Benoit, Douglas A. Wiens, Sridhar Anandakrishnan, Donald Voigt, Patrick J. Shore   +6 more
doaj   +1 more source

Remnant of the late Permian superplume that generated the Siberian Traps inferred from geomagnetic data

Nature Communications, 2023
Discovering ancient mantle plumes is challenging. By combining electrical conductivity with mineral physics modelling, this work finds a remnant of an ancient plume trapped in the mantle transition zone and sheds new light on mantle plume physics.
Shiwen Li, Yabin Li, Yanhui Zhang, Zikun Zhou, Junhao Guo, Aihua Weng   +5 more
doaj   +1 more source

Features of the velocity structure of the mantle under the Precambrian structures on the example of the Indian platform (according to seismic tomography)

Геофизический журнал, 2021
The paper presents additional data, approaching to understanding the driving forces in the formation of geological structures and the development of the Indian platform.
L.N. Zaiets, I.V. Bugaienko, T.A. Tsvetkova   +2 more
doaj   +1 more source

Velocity structure of the mantle and abyssal fluids of Southeast Asia

Геофизический журнал, 2012
The real work is devoted to consideration of velocity structure of mantle under SouthEast Asia with the purpose of possible selection of velocity mantle columns, communication of them with petroleumgas pools.
L. N. Zayets, Ding True Kao, T. A. Tsvetkova   +2 more
doaj   +1 more source

Seismic evidence for a thinner mantle transition zone beneath the South Pacific Superswell

Geophysical Research Letters, 2000
Broadband seismograms recorded by the seismic stations deployed on oceanic islands in the South Pacific for two deep earthquakes in 1998 are used to investigate the mantle transition zone structure beneath the South Pacific, where a large‐scale hot plume
Fenglin Niu, Hiroshi Inoue, Daisuke Suetsugu, Kenji Kanjo   +3 more
doaj   +1 more source

Anomalously thin transition zone and apparently isotropic upper mantle beneath Bermuda: Evidence for upwelling

Geochemistry, Geophysics, Geosystems, 2013
The origin of the Bermuda swell and volcanism remains enigmatic. The lack of an associated time‐progressive hotspot track and absence of present‐day volcanic activity make it difficult to reconcile with a deep mantle plume model.
Margaret H. Benoit, Maureen D. Long, Scott D. King   +2 more
doaj   +1 more source

Seismic Tomography of the Trans-North China Orogen and Its Dynamic Implications

Frontiers in Earth Science, 2022
We present a high-resolution S wave velocity model of the Trans-North China Orogen (TNCO) and its adjacent areas derived from S wave traveltime residuals of teleseismic waveforms recorded by the dense ChinArray seismic network.
Xiaoming Xu, Xiaoming Xu, Zhifeng Ding, Zhifeng Ding, Huili Guo, Huili Guo, Xinfu Li   +6 more
doaj   +1 more source