Journal ArticleDOI
Flood Basalts and Hot-Spot Tracks: Plume Heads and Tails
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TLDR
Continental flood basalt eruptions have resulted in sudden and massive accumulations of basaltic lavas in excess of any contemporary volcanic processes, thought to result from deep mantle plumes.Abstract:
Continental flood basalt eruptions have resulted in sudden and massive accumulations of basaltic lavas in excess of any contemporary volcanic processes. The largest flood basalt events mark the earliest volcanic activity of many major hot spots, which are thought to result from deep mantle plumes. The relative volumes of melt and eruption rates of flood basalts and hot spots as well as their temporal and spatial relations can be explained by a model of mantle plume initiation: Flood basalts represent plume "heads" and hot spots represent continuing magmatism associated with the remaining plume conduit or "tail." Continental rifting is not required, although it commonly follows flood basalt volcanism, and flood basalt provinces may occur as a natural consequence of the initiation of hot-spot activity in ocean basins as well as on continents.read more
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Dissertation
Age and duration of the British Tertiary Igneous Province implications for the development of the ancestral Iceland Plume
TL;DR: The British Tertiary Igneous Province (BTIP) has been used to study the chemical and thermal structure of the plume head, on arrival beneath the lithosphere, providing a key to this understanding as discussed by the authors.
Journal ArticleDOI
Intrusion of Magmatic Bodies Into the Continental Crust: 3-D Numerical Models
Weronika Gorczyk,Katharina Vogt +1 more
TL;DR: In this paper, a series of numerical thermomechanical simulations on 3D emplacement in the Earth's continental crust is presented to demonstrate the response of the continental crust to magma intrusion, showing change in intrusion geometries between dikes, cone sheets, sills, plutons, ponds, funnels, finger-shaped and stock-like intrusions.
Journal ArticleDOI
The Warnie volcanic province: Jurassic intraplate volcanism in Central Australia
TL;DR: The Warnie Volcanic Province (WVP) as mentioned in this paper was proposed as a product of extension and intraplate convective upwelling above the subducting Pacific Slab.
Journal ArticleDOI
Do Supercontinent-Superplume Cycles Control the Growth and Evolution of Continental Crust?
TL;DR: The evolution of continental crust can be directly linked to the first-order supercontinent-superplume cycles as mentioned in this paper, and the actual U-Pb crystallization ages of juvenile zircon grains provide the best opportunity to unravel crustal growth through time.
Journal ArticleDOI
Major Element Records of Variable Plume Involvement in the North Atlantic Province Tertiary Flood Basalts
TL;DR: In this paper, major element variations in North Atlantic Tertiary Province primitive, early erupted, alkaline-transitional-tholeiite basalts, recalculated to a restricted value of MgO, give insights into the process of plume-related magmatism.
References
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Journal ArticleDOI
Magmatism at rift zones: The generation of volcanic continental margins and flood basalts
Robert S. White,Dan McKenzie +1 more
TL;DR: In this paper, the authors show that the production of magmatically active rifted margins and the effusion of flood basalts onto the adjacent continents can be explained by a simple model of rifting above a thermal anomaly in the underlying mantle.
Journal ArticleDOI
The Volume and Composition of Melt Generated by Extension of the Lithosphere
Dan McKenzie,Mike J. Bickle +1 more
Journal ArticleDOI
Geochim. cosmochim. acta
Book ChapterDOI
Plate Motions and Deep Mantle Convection
TL;DR: In this article, a scheme of deep mantle convection is proposed in which narrow plumes of deep material rise and then spread out radially in the asthenosphere, and thus their strikes show the direction the plates were moving as they were formed.
Journal ArticleDOI
Deccan flood basalts at the Cretaceous/Tertiary boundary?
Vincent Courtillot,Jean Besse,Didier Vandamme,Raymond Montigny,Jean-Jacques Jaeger,Henri Cappetta +5 more
TL;DR: In this paper, the Deccan continental flood basalts in India have been considered and it was suggested that volcanic activity may have lasted less than 1 Ma, thus possibly ranking as one of the largest volcanic catastrophes in the last 200 Ma.
Related Papers (5)
Magmatism at rift zones: The generation of volcanic continental margins and flood basalts
Robert S. White,Dan McKenzie +1 more