Results 161 to 170 of about 1,408 (194)
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.
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The mechanisms underpinning Cenozoic intraplate volcanism in eastern Australia: Insights from seismic tomography and geodynamic modeling [PDF]
Geophysical Research Letters, 2017 Cenozoic intraplate volcanism is widespread throughout much of eastern Australia and manifests as both age‐progressive volcanic tracks and non‐age‐progressive lava fields. Various mechanisms have been invoked to explain the origin and distribution of the
N Rawlinson +2 more
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Journal of the Geological Society, 2014
Late Cenozoic intraplate volcanism in the Changbai volcanic field straddles the border between China and North Korea, forming basic (alkali basalts and tholeiites) and intermediate–acidic (trachytes and peralkaline rhyolites) volcanic rocks with ages ranging from 19.9 Ma to the present.
Maoliang Zhang +4 more
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Late Cenozoic intraplate volcanism in the Changbai volcanic field straddles the border between China and North Korea, forming basic (alkali basalts and tholeiites) and intermediate–acidic (trachytes and peralkaline rhyolites) volcanic rocks with ages ranging from 19.9 Ma to the present.
Maoliang Zhang +4 more
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Cenozoic intraplate volcanism on New Zealand: Upwelling induced by lithospheric removal
Earth and Planetary Science Letters, 2006 Diffuse intraplate volcanism spanning the Cenozoic on the North, South, Chatham, Auckland, Campbell and Antipodes Islands of New Zealand has produced quartz tholeiitic to basanitic/nephelinitic (including their differentiates) monogenetic volcanic fields
KAJ Hoernlé +2 more
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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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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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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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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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