Results 11 to 20 of about 8,743 (239)

Mantle plumes and mantle dynamics in the Wilson cycle [PDF]

open access: yesGeological Society, London, Special Publications, 2018
Abstract This review discusses the thermal evolution of the mantle following large-scale tectonic activities such as continental collision and continental rifting. About 300 myr ago, continental material amalgamated through the large-scale subduction of oceanic seafloor, marking the termination of one or more oceanic basins (e.g.
openaire   +4 more sources

Insights Into the Nature of Plume‐Ridge Interaction and Outflux of H2O From the Galápagos Spreading Center

open access: yesGeochemistry, Geophysics, Geosystems, 2021
The flow of high‐temperature and compositionally enriched material between mantle plumes and nearby spreading centers influences up to 30% of the global mid‐ocean ridge system and represents a significant, but currently unconstrained, flux of volatiles ...
Matthew L. M. Gleeson, Sally A. Gibson
doaj   +1 more source

Modeling Mantle Dynamics in the Banda Sea Triple Junction – Exploring a Possible Link to El Niño Southern Oscillation (Revisited) [PDF]

open access: yesJournal of Systemics, Cybernetics and Informatics, 2020
The upwelling mantle within the Banda Sea is modeled using computer visualization techniques. The Banda Sea is considered a triple junction of the Pacific, Australian, and Eurasian Plates within the plate tectonic hypothesis.
Bruce A. Leybourne, Michael B. Adams
doaj  

Complex mantle flow beneath the Luxi uplift segment of the Tanlu fault zone inferred from SKS splitting measurements

open access: yesFrontiers in Earth Science, 2023
To better understand the anisotropic structure and mantle dynamics in and around the Luxi uplift segment of the Tanlu fault zone in East China, we collect waveform data recorded at 47 NCISP (Northern China Interior Structure Project) portable seismic ...
Mingwen Lu, Jianshe Lei
doaj   +1 more source

Mountain building and mantle dynamics [PDF]

open access: yesTectonics, 2013
Mountain building at convergent margins requires tectonic forces that can overcome frictional resistance along large‐scale thrust faults and support the gravitational potential energy stored within the thickened crust of the orogen. A general, dynamic model for this process is still lacking. Here we propose that mountain belts can be classified between
Claudio Faccenna   +3 more
openaire   +4 more sources

Impact of upper mantle convection on lithosphere hyperextension and subsequent horizontally forced subduction initiation [PDF]

open access: yesSolid Earth, 2020
Many plate tectonic processes, such as subduction initiation, are embedded in long-term (>100 Myr) geodynamic cycles often involving subsequent phases of extension, cooling without plate deformation and convergence. However, the impact of upper mantle
L. G. Candioti   +3 more
doaj   +1 more source

Geodynamo and Mantle Dynamics

open access: yesJournal of Geography (Chigaku Zasshi), 2005
Recent progress of numerical simulations on the dynamo process in the core and the mantle convection provides a clue to understanding the origin of global variations of the Earth system during the last 150 Ma, in which long-term variations of geomagnetic reversal frequency and mantle activity are closely related in time.
HAMANO, Yozo   +2 more
openaire   +2 more sources

Seismotomography of the mantle under the East European platform: mantle velocity boundaries

open access: yesГеофизический журнал, 2012
Mantle velocity boundaries of EEP have been specified. For the upper mantle and its tranzi-tion zone dynamics of propagation of mantle velocity limits with depth has been presented.
T. A. Tsvetkova, I. V. Bugaenko
doaj   +1 more source

Dynamical geochemistry of the mantle [PDF]

open access: yesSolid Earth, 2011
Abstract. The reconciliation of mantle chemistry with the structure of the mantle inferred from geophysics and dynamical modelling has been a long-standing problem. This paper reviews three main aspects. First, extensions and refinements of dynamical modelling and theory of mantle processing over the past decade. Second, a recent reconsideration of the
openaire   +4 more sources

Marine Anoxia and Ocean Acidification During the End‐Permian Extinction

open access: yesGeophysical Monograph Series, Page 325-340., 2021

Exploring the links between Large Igneous Provinces and dramatic environmental impact

An emerging consensus suggests that Large Igneous Provinces (LIPs) and Silicic LIPs (SLIPs) are a significant driver of dramatic global environmental and biological changes, including mass extinctions.
Ying Cui   +4 more
wiley  

+8 more sources

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