Mantle plume - Wikipedia
网页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 …
Mantle plumes and their role in Earth processes | Nature ...
网页2021年5月25日 · More than 18 mantle plumes appear to originate from the deepest regions in Earth’s mantle. Mantle plumes influence surface processes, including continental break-up and mass extinctions.
Hot Spots - Education
网页2023年10月19日 · A hot spot is an area on Earth over a mantle plume or an area under the rocky outer layer of Earth, called the crust, where magma is hotter than surrounding magma. The magma plume causes melting and thinning of …
4.8: Hotspots and Mantle Plumes - Geosciences LibreTexts
网页2021年2月15日 · 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.
The rise and fall of mantle plumes | Nature Reviews Earth ...
网页2020年5月27日 · 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...
Mantle Plume - an overview | ScienceDirect Topics
网页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.
Earth’s mantle composition revealed by mantle plumes
网页2023年8月29日 · 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, as well as global heat and volatile budgets.
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