Results 31 to 40 of about 27,222 (235)

The late Mesozoic-Cenozoic tectonic evolution of the South China Sea: A petrologic perspective [PDF]

open access: yes, 2014
This paper presents a review of available petrological, geochonological and geochemical data for late Mesozoic to Recent igneous rocks in the South China Sea (SCS) and adjacent regions and a discussion of their petrogeneses and tectonic implications. The
Castillo, PR, Shi, X, Yan, Q
core   +2 more sources

Tertiary-Quaternary subduction processes and related magmatism in the Alpine-Mediterranean region [PDF]

open access: yes, 2006
During Tertiary to Quaternary times, convergence between Eurasia and Africa resulted in a variety of collisional orogens and different styles of subduction in the Alpine-Mediterranean region.
Downes, Hilary   +2 more
core   +1 more source

Corn syrup mantle plumes [PDF]

open access: yesProceedings of the National Academy of Sciences, 2014
In the dark, microscopic plastic beads in the 200-gallon tank of corn syrup glow and sparkle when light from a projector shines at them in geophysical fluid dynamicist Christopher Kincaid’s laboratory at the University of Rhode Island. Experiments with this goo could help explain whether columns of magma rising up from near the Earth’s core might ...
openaire   +2 more sources

Upper Mantle Pollution during Afar Plume-Continental Rift Interaction [PDF]

open access: yes, 2011
International audienceNew Pb, Sr, Nd, Hf, and He isotope data for Quaternary basalts, erupted from Debre Zeyit, Butajira, and the Wonji Fault Belt of the Main Ethiopian Rift, show systematic mixing relationships involving three distinct mantle sources ...
Blichert-Toft, Janne   +5 more
core   +3 more sources

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

open access: yes, 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

Record of massive upwellings from the Pacific large low shear velocity province

open access: yesNature Communications, 2016
Large igneous provinces may record pulses mantle plume upwellings and their relationship with deep-rooted mantle sources. Madrigal et al. present a new petrological model of the Pacific Ocean Large Igneous Province finding that mantle plume pulses were ...
Pilar Madrigal   +4 more
doaj   +1 more source

Petrogenesis and tectonic significance of mafic–ultramafic rocks from Southwest Yunnan, China

open access: yesComptes Rendus. Géoscience, 2020
This study focuses on the mafic–ultramafic lavas of the Early Carboniferous outcrop in Mangxin, southwestern Yunnan, China. Picrites with 26–32 wt% MgO and a quenched texture are the most significant components of this rock association.
Shi, Qing, Fang, Nianqiao
doaj   +1 more source

On the location of plumes and lateral movement of thermochemical structures with high bulk modulus in the 3-D compressible mantle [PDF]

open access: yes, 2011
The two large low shear velocity provinces (LLSVPs) at the base of the lower mantle are prominent features in all shear wave tomography models. Various lines of evidence suggest that the LLSVPs are thermochemical and are stable on the order of hundreds ...
Gurnis, Michael   +3 more
core   +1 more source

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

open access: yesGeochemistry, 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   +4 more
doaj   +1 more source

Early Cenozoic denudation of central west Britain in response to transient and permanent uplift above a mantle plume [PDF]

open access: yes, 2018
Upwelling mantle plumes beneath continental crust are predicted to produce difficult to quantify, modest uplift and denudation. The contribution of permanent and transient components to the uplift is also difficult to distinguish.
Al-Kindi   +98 more
core   +1 more source

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