A mantle plume is a proposed mechanism of convection within the Earth's mantle, hypothesized to explain anomalous volcanism. [2] Because the plume head partially melts on reaching shallow depths, a plume is often invoked as the cause of volcanic hotspots, such as Hawaii or Iceland, and large igneous provinces such as the Deccan and Siberian Traps.

Feb 15, 2021 · Hotspots and Mantle Plumes. A hotspot is a place in the upper mantle of the Earth at which extremely hot magma from the lower mantle upwells to melt through the crust usually in the interior of a tectonic plate to form a volcanic feature. • These are hotspots beneath the lithosphere caused by rising plumes of hot mantle material.

May 25, 2021 · Thermochemical mantle plumes are an integral part of Earth’s dynamic interior. More than 18 mantle plumes appear to originate from the deepest regions in Earth’s mantle. Mantle plumes...

Aug 29, 2023 · Mantle plumes originate at depths near the core−mantle boundary (~2,800 km). As such, they provide invaluable information about the composition of the deep mantle and insight into convection,...

Aug 29, 2023 · Mantle plumes originate at depths near the core−mantle boundary (~2,800 km). As such, they provide invaluable information about the composition of the deep mantle and insight into convection, crustal formation, and crustal recycling, …

5 days ago · Mantle plumes transport primordial mantle material from below the zone of active convection that produce time-progressive volcanic chains, break up continents and act as a driving force for plate tectonics.

Mantle plumes are a well-posed hypothesis for their formation. Starting plume heads provide an explanation of brief episodes of flood basalts, mafic intrusions, and radial dike swarms. Yet the essence of the hypothesis hides deep in the mantle. Tests independent of surface geology and geochemistry to date have been at best tantalizing.

May 21, 2024 · Mantle plumes are powerful geological events that consist of a large bulb of magma from the mantle, hundreds of miles across, rising into the upper crust and triggering major volcanism. Visually, they would look similar to the rising shapes in a lava lamp.

May 27, 2020 · Mantle plumes give rise to some of the most volcanically active regions on Earth (such as Hawaii) and represent a key component of planetary dynamics. Deep-seated plumes are typically...

A mantle plume is a buoyant mass of material in the Earth's mantle that rises due to its buoyancy. It is associated with volcanic activity and can have a significant impact on the Earth's surface geology.