Results 11 to 20 of about 38,766 (189)

Global influence of mantle temperature and plate thickness on intraplate volcanism [PDF]

Nature Communications, 2021
Here, the authors compile a global geochemical database of Neogene-Quaternary intraplate volcanism. By comparing the distribution and composition of these rocks with tomographic models they show that intraplate volcanism can be used to constrain upper ...
P. W. Ball, N. J. White, J. Maclennan, S. N. Stephenson   +3 more
doaj   +29 more sources

Linking Intraplate Volcanism to Lithospheric Structure and Asthenospheric Flow

Geochemistry, Geophysics, Geosystems, 2021
Several of Earth's intraplate volcanic provinces are hard to reconcile with the mantle plume hypothesis. Instead, they exhibit characteristics that are more compatible with shallower processes that involve the interplay between uppermost mantle flow and ...
Thomas Duvernay, D. Rhodri Davies, Christopher R. Mathews, Angus H. Gibson, Stephan C. Kramer   +4 more
doaj   +3 more sources

Intraplate Volcanism

, 2021
The vast majority of active volcanism that is located at plate boundaries can be easily explained by plate tectonic processes. Intraplate volcanism, which incorporates some of the smallest and largest volcanic events on Earth, cannot be successfully ...
S. Homrighausen, J. Geldmacher, K. Hoernle, T. Rooney   +3 more
core   +4 more sources

The return of stagnant slab recorded by intraplate volcanism. [PDF]

Proc Natl Acad Sci U S A
Subducted plates often stagnate in the mantle transition zone (MTZ), and the fate of the stagnant slabs is still debatable. They may sink into the lower mantle, or remain partially trapped in the MTZ, but it is uncertain whether they can return to the upper mantle. We report geochemical evidence of late-Miocene (~6 Ma) basalts from,
Zhou ZB, Chen LH, Huang ZC, Hofmann AW, Wang XJ, Zeng G, Bi YJ, Zhao J.   +7 more
europepmc   +5 more sources

Subduction legacies in the mantle transition zone modulate intraplate oceanic volcanism [PDF]

Nature Communications
How oceanic crust forms and intraplate volcanism arises remains central to resolving the mechanisms driving Earth’s dynamic evolution. Anomalously thick oceanic crust is conventionally attributed to thermal mantle plumes, yet large igneous provinces such
Jianfeng Yang, Manuele Faccenda, Christine M. Meyzen, Andrea Marzoli, Liang Zhao   +4 more
doaj   +2 more sources

On the origin of recent intraplate volcanism in Australia

Geology, 2014
Many intraplate volcanic provinces do not appear to originate from plate-boundary processes or upwelling mantle plumes. Edge-driven convection (EDC), where a small-scale convective instability (induced by local variations in lithospheric thickness) displaces hot mantle material upward, provides an alternative hypothesis for such volcanism.
Davies, Rhodri, Rawlinson, Nicholas
core   +4 more sources

Heterogeneous stagnant slab controls focused crustal recycling and volcanic clustering [PDF]

Nature Communications
Stagnant slabs transport cold, hydrous, and compositionally distinct materials into the mantle transition zone (MTZ). Intraplate volcanism above these slabs documents the geochemical imprints of recycled subducted components.
Sheng Zhu, Yangfan Deng, Yi-Gang Xu, Yun Chen, Zhou Zhang, Hong-Yan Li, Zhong-Hai Li, Shui-Jiong Wang, Xin Wang, Keith Priestley   +9 more
doaj   +2 more sources

Late Cenozoic intraplate volcanism as a trigger for hydrothermal venting in the Arctic southwestern Eurasia Basin

Communications Earth & Environment
Intraplate volcanism has occurred for the last 35 million years within Northeast Atlantic and Arctic margins, including the western Barents Sea, Svalbard, and northern Greenland. Earlier studies have suggested that some of this volcanism might be sourced
Juan Camilo Meza-Cala, Alexander Minakov, Jan Inge Faleide, Mansour M. Abdelmalak, Grace E. Shephard, Rune Mattingsdal, Wolfram H. Geissler, Carmen Gaina   +7 more
doaj   +2 more sources

Ductile Crustal Flow Facilitates Intraplate Volcanism: Seismic Evidence From Tengchong, China

Geochemistry, Geophysics, Geosystems
The mechanisms and processes driving intraplate volcanism remain incompletely understood despite significant advances in recent decades. Here, we use high‐resolution multiparameter full‐waveform inversion to image the three‐dimensional seismic structure ...
Xingpeng Dong, Kai Yang
doaj   +2 more sources

Intraplate volcanism of the Western Pacific

, 2015
INTRAPLATE VOLCANISM OF THE WESTERN PACIFIC: NEW INSIGHTS FROM GEOLOGICAL AND GEOPHYSICAL OBSERVATIONS IN THE PIGAFETTA BASINByTimothy J. StadlerUnderstanding intraplate volcanism is a key to deciphering the Earth's magmatic history.
Stadler, Timothy J.
openaire   +2 more sources