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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Book ChapterDOI
Tectonic reconstructions in magnetic quiet zones: Insights from the Greater Ontong Java Plateau
TL;DR: In this paper, the Ontong Java, Manihiki, and Hikurangi oceanic plateaus likely originated as one large superplateau, called OntongJava Nui (OJNui), and were reconstructed using seafl oor fabric, including fracture zones and the rift margins of large igneous provinces.
Dissertation
Évolution paléogéographique et paléotopographique du Tian Shan Chinois au Mésozoïque
TL;DR: The Tian Shan as mentioned in this paper is a chaine intracontinentale d’Asie Centrale, where the structure lithospherique resulte de l’accretion de divers blocs.
Dissertation
Evolution géodynamique des cratons des Guyanes et d'Afrique de l'Ouest. Apport des données paléomagnétiques, géochronologiques (40Ar/39Ar) et géochimiques en Guyane et Côte-d'Ivoire.
TL;DR: The geodynamique paleoproterozoique et mesozoique en Guyane et Cote-d'Ivoire, une etude pluridisciplinaire (paleomagnetisme, geochronologie 40Ar/39Ar, and geochimie a ete menee sur des dolerites, granitoides, and roches sedimentaires) are discussed in this paper.
Journal ArticleDOI
Alteration and submergence of basalts in Kachchh, Gujarat, India: implications for the role of the Deccan Traps in the India–Seychelles break-up
TL;DR: In this article, the Deccan Trap flood basalt volcanism is considered to have initiated the break-up of India from the Seychelles (c. 62.5 Ma).
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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