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Patterns of intraplate volcanism controlled by asthenospheric shear
Nature Geoscience, 2011Volcanism observed far from plate boundaries, in the interior of oceanic and continental plates, may result from flow in the underlying mantle. Comparison between a numerical model of mantle flow and the spatial distribution of intraplate volcanism indicates that rapid shear motion in the mantle may drive melting that causes intraplate eruptions.
Clinton P. Conrad +3 more
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Controls on volcanism at intraplate basaltic volcanic fields
Earth and Planetary Science Letters, 2017A broad range of controlling mechanisms is described for intraplate basaltic volcanic fields (IBVFs) in the literature. These correspond with those relating to shallow tectonic processes and to deep mantle plumes. Accurate measurement of the physical parameters of intraplate volcanism is fundamental to gain an understanding of the controlling factors ...
Jackson C. van den Hove +4 more
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Intraplate Lithospheric Deformation Forms Large Volcanic Regions
2023Large igneous systems form either in areas of thin lithosphere at or near plate boundaries or by mantle-melting anomalies in intraplate settings with comparatively thicker lithosphere. Decompression melting or flux melt dominate at plate boundaries. Intraplate magmatism relates to thermal or compositional anomaly in the mantle.
César R. Ranero +8 more
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Cenozoic Intraplate Alkaline Volcanism of Western Bohemia
Studia Geophysica et Geodaetica, 2000Three independent volcanic suites have been recognised in W Bohemia: (i) the old unimodal alkaline ol. nephelinite-tephrite (29-19 Ma) in the Ohře Rift, (ii) two contemporaneous weakly (trachybasalt/trachyandesite-trachyte/rhyolite; 13-11 Ma) and strongly (ol.
Jaromír Ulrych +5 more
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Magma ascent in Australian intraplate basaltic volcanic provinces
2023<p>Australia hosts at least two active continental basaltic volcanic fields with Holocene eruption ages yet little is understood about magma ascent and mantle to surface ascent pathways and timescales in these regions. In this study we use textural and chemical information stored within minerals from two of the youngest volcanic eruptions
Heather Handley +3 more
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Can mantle convection by distant rifting induce intraplate volcanism?
2023Rifting is a large-scale planetary evolution process that forms a new oceanic crust with mid-ocean ridges in an extensional environment. In this process, mantle convection occurred and material circulates, forming a volcano in the surrounding area. It is well known that mantle flow of rifting causes volcanism, but most of the volcanic processes are ...
Min-Seok Jang, Byung-Dal So
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Numerical modeling of the formation of extensive intraplate volcanism
2023The occurrence of mantle melting is generally attributed to high temperature, decreased pressure, and/or the presence of volatiles such as water. Volcanism away from plate boundaries is ascribed to intraplate or anorogenic volcanism, which may reveal important dynamics of the deep mantle.
Jianfeng Yang +2 more
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Intraplate volcanism with complex age-distance patterns
2009Many volcano chains in the Pacific do not follow the most fundamental predictions of hot spot theory in terms of geographic age progressions. One possible explanation for non–hot spot intraplate volcanism is small-scale sublithospheric convection (SSC), and we explore this concept using 3-D numerical models that simulate melting with rheology laws that
Ballmer, M.D. +4 more
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Basic volcanism associated with intraplate linear features
Philosophical Transactions of the Royal Society of London. Series A, Mathematical and Physical Sciences, 1986Intraplate volcanic lineaments include ocean island chains and continental rift systems. Basic lavas erupted in such lineaments form a continuum from tholeiitic basalt in the basements of ocean islands to nephelinites and melilitites in continental rifts and as a capping on ocean islands.
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B″ not D″ as the source of intraplate volcanism
2022ABSTRACT Under fast-moving oceanic plates, the asthenosphere seismic B″ region becomes isolated from the convecting mantle by plate drag and acts as an advecting layer, which can serve as a long-lived source for intraplate volcanism.
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