Results 21 to 30 of about 16,900 (220)

Post-collisional Tertiary–Quaternary mafic alkalic magmatism in the Carpathian–Pannonian region: a review [PDF]

, 2004
Mafic alkalic volcanism was widespread in the Carpathian–Pannonian region (CPR) between 11 and 0.2 Ma. It followed the Miocene continental collision of the Alcapa and Tisia blocks with the European plate, as subduction-related calc-alkaline magmatism was
Albarede, Aldanmaz, Alexandru Szakács, Balogh, Balogh, Balogh, Balogh, Blusztajn, Campbell, Cebria, Class, Csontos, Csontos, Dobosi, Dobosi, Dobosi, Downes, Downes, Downes, Ebner, Embey-Isztin, Embey-Isztin, Embey-Isztin, Fodor, Granet, Gîrbacea, Harangi, Harangi, Harangi, Harangi, Hilary Downes, Hofmann, Horváth, Höernle, Ioan Seghedi, Jung, Kadosa Balogh, Konečny, Konečny, Mason, Mason, Maţenco, McKenzie, Orlando Vaselli, Pécskay, Pécskay, Rosenbaum, Royden, Royden, Roşu, Salters, Seghedi, Seghedi, Seghedi, Seghedi, Seghedi, Shaw, Sims, Späth, Späth, Sun, Szabó, Szabó, Szakács, Tatsumi, Thirlwall, Thirlwall, Vaselli, Wedepohl, Wilson, Wilson, Wöerner, Zindler, Zoltán Pécskay, Zou, Šimon   +75 more
core   +1 more source

Supercontinent Cycle and Thermochemical Structure in the Mantle: Inference from Two-Dimensional Numerical Simulations of Mantle Convection

Geosciences, 2017
In this study, we conduct numerical simulations of thermochemical mantle convection in a 2D spherical annulus with a highly viscous lid drifting along the top surface, in order to investigate the interrelation between the motion of the surface (super ...
Masanori Kameyama, Akari Harada
doaj   +1 more source

Extremely high He isotope ratios in MORB-source mantle from the proto-Iceland plume [PDF]

, 2003
The high ³He/⁴He ratio of volcanic rocks thought to be derived from mantle plumes is taken as evidence for the existence of a mantle reservoir that has remained largely undegassed since the Earth's accretion.
AD Saunders, AK Pedersen, B Marty, B Marty, BB Hanan, BS Hardarson, D Anderson, D Francis, D Porcelli, D Porcelli, DJ DePaolo, DM McKenzie, DR Hilton, DR Hilton, DW Graham, EH Hauri, ET Dixon, Finlay M. Stuart, FM Stuart, FM Stuart, I Robillard, J. Godfrey Fitton, JG Fitton, JG Fitton, JM Eiler, M Honda, MD Kurz, MD Kurz, MJ Whitehouse, RD van der Hilst, Robert M. Ellam, Solveigh Lass-Evans, T Prestvik, V Olive   +33 more
core   +2 more sources

Fingerprinting secondary mantle plumes [PDF]

Earth and Planetary Science Letters, 2022
Many vertical seismic velocity anomalies observed below different parts of the Eurasian plate are rooted in the transition zone between the upper and lower mantle (410–660 km), forming so-called secondary plumes. These anomalies are interpreted as the result of thermal effects of large-scale thermal upwelling (primary plume) in the lower mantle or deep
Sierd Cloetingh, Alexander Koptev, Alessio Lavecchia, István János Kovács, Fred Beekman   +4 more
openaire   +4 more sources

Deep mantle plumes and an increasing Earth radius

Geodesy and Geodynamics, 2019
Recent space geodetic and gravimetric studies have given indications that the Earth's radius is increasing at 0.1–0.4 mm yr−1 at present. Seismic studies have also shown that earthquakes alone could be causing the radius to increase at 0.011–0.06 mm yr−1.
Matthew R. Edwards
doaj   +1 more source

Mantle plume migration ?

, 2021
The file is CCP stacking results of receiver function in northeast China. NE1.tar.gz and NE2.tar.gz are raw data used in this study.
openaire   +1 more source

Bifurcations and dynamics in convection with temperature-dependent viscosity in the presence of the O(2) symmetry [PDF]

, 2013
We focus the study of a convection problem in a 2D setup in the presence of the O(2) symmetry. The viscosity in the fluid depends on the temperature as it changes its value abruptly in an interval around a temperature of transition.
Curbelo, Jezabel, Mancho, Ana M.
core   +4 more sources

Long‐Distance Asthenospheric Transport of Plume‐Influenced Mantle From Afar to Anatolia

Geochemistry, Geophysics, Geosystems, 2023
The origin of widespread volcanism far from plate boundaries and mantle plumes remains a fundamental unsolved question. An example of this puzzle is the Anatolian region, where abundant intraplate volcanism has occurred since 10 Ma, but a nearby ...
J. Hua, K. M. Fischer, E. Gazel, E. M. Parmentier, G. Hirth   +4 more
doaj   +1 more source

East African topography and volcanism explained by a single, migrating plume [PDF]

, 2020
Anomalous topographic swells and Cenozoic volcanism in east Africa have been associated with mantle plumes. Several models involving one or more fixed plumes beneath the northeastward migrating African plate have been suggested to explain the space-time ...
Gurnis, Michael, Hassan, Rakib, Müller, Dietmar, Williams, Simon E.   +3 more
core   +1 more source

Slabs in the lower mantle and their modulation of plume formation [PDF]

, 2002
Numerical mantle convection models indicate that subducting slabs can reach the core-mantle boundary (CMB) for a wide range of assumed material properties and plate tectonic histories.
Gurnis, Michael, Han, Lijie, Tan, Eh
core   +1 more source