Results 131 to 140 of about 449 (169)
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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, 1986Abstract Intraplate 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. All these magma types are enriched in
J. G. Fitton, D. James
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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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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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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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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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Petrogenesis and geodynamic control of intraplate Cenozoic volcanism in Italy
Journal of the Virtual Explorer, 2010The Cenozoic evolution of the Mediterranean area has been characterized by various subduction processes and related volcanism (calcalkaline, shoshonitic and ultrapotassic series), in the framework of a general convergence between the African and Eurasian plates and interposed microplates. Intraplate volcanism closely following or accompanying (in space
BECCALUVA, Luigi +4 more
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Intraplate Lithospheric Deformation and the Formation of a Large Volcanic Regions
2023American Geophysical Union Fall Meeting, 12-16 December 2022 ...
Ranero, César R. +8 more
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2019
The physical volcanology of intraplate basaltic submarine and submarine to subaerial volcanic sequences is poorly understood despite most volcanism on Earth being basaltic and occurring within oceans. Direct observation of active intraplate basaltic submarine volcanism is expensive and logistically difficult.
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The physical volcanology of intraplate basaltic submarine and submarine to subaerial volcanic sequences is poorly understood despite most volcanism on Earth being basaltic and occurring within oceans. Direct observation of active intraplate basaltic submarine volcanism is expensive and logistically difficult.
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