looking for suitable laboratory equipment?

Our professionals are available 24*7. You can call us any time.

To understanding
Hotspot Volcanism: Thermal Plume - IRIS Consortium

Hotspot Volcanism: Thermal Plume - IRIS Consortium

A volcanic hotspot is an area in the mantle from which heat rises as a thermal plume from deep in the Earth. High heat and lower pressure at the base of the lithosphere (tectonic plate) facilitates melting of the rock. This melt, called magma, rises through cracks and erupts to form volcanoes. As the tectonic plate moves over the stationary ...

More Product
Thermal Plume - an overview ScienceDirect Topics

Thermal Plume - an overview ScienceDirect Topics

A.C. Kerr, in Treatise on Geochemistry (Second Edition), 2014 4.18.4.5.1 Problems with the mantle plume model for the Ontong Java Plateau. Models for the formation of the Ontong Java Plateau via a thermal plume predict that it should have resulted in uplift of the ocean floor and raised much of the plateau's surface above sea level, leading to subaerial volcanism (e.g., …

More Product
Heat Transfer From Rising Mantle Plumes -

Heat Transfer From Rising Mantle Plumes -

As a general rule, the crust temperature is rising with depth due to the heat flow from the much hotter mantle; away from tectonic plate boundaries, temperature rises in about 25–30 C/km …

More Product
Resolving the Mantle Plume Heat Transfer Discrepancy

Resolving the Mantle Plume Heat Transfer Discrepancy

Estimates of the buoyancy and heat flux of upwelling mantle plumes are important for understanding many aspects of convection within the Earth. These fluxes influence melt productivity and geochemistry at mid-oceanic spreading centres and hotspots, dynamic topography, mantle mixing timescales and Earth's bulk heat budget. The majority of existing …

More Product
(PDF) Interaction of rising and sinking mantle plumes

(PDF) Interaction of rising and sinking mantle plumes

For a heat flux of 30 mW/m 2 , the ratio of the frequencies of plunging and rising plumes is about 4.8. The laboratory experiments of Schaeffer and Manga (2001) employed a low range of …

More Product
Interaction of rising and sinking mantle plumes

Interaction of rising and sinking mantle plumes

Interaction of rising and sinking mantle plumes ... Heat transfer and horizon- mantle (e.g., slabs) may have the ability to induce hot rising tally averaged temperature of convection with large viscosity variations, J. Fluid Mech., 129, 173-192, 1983. plumes. ...

More Product
Hotspots and mantle plumes revisited: Towards

Hotspots and mantle plumes revisited: Towards

Mantle convection is the principal mechanism by which heat is transferred from the deep Earth to the surface. Cold subducting slabs sink into the mantle and steadily warm, whilst upwelling plumes ...

More Product
Hotspots and mantle plumes revisited: Towards reconciling the mantle ...

Hotspots and mantle plumes revisited: Towards reconciling the mantle ...

Mantle convection is the principal mechanism by which heat is transferred from the deep Earth to the surface. Cold subducting slabs sink into the mantle and steadily warm, whilst upwelling plumes carry heat to the base of lithospheric plates where it can subsequently escape by conduction. Accurate estimation of the total heat carried by these plumes is important for …

More Product
Mantle plumes and their role in Earth processes - Nature

Mantle plumes and their role in Earth processes - Nature

May 25, 2021 Such observations are not unexpected in a convecting mantle, as computer models show that rising mantle plumes will be advected in Earth’s overall mantle circulation regime 62,163,276,277 and ...

More Product
Hotspots mantle plumes and core heat loss - ScienceDirect

Hotspots mantle plumes and core heat loss - ScienceDirect

May 30, 2002 Mantle plumes are then seen as objects largely independent of plates and large-scale mantle circulation and carrying heat and isotopes from their source (D″ or any internal boundary layer) to the surface (e.g. [2], [3] ). The total heat flow coming out of hotspots [4], [5] is often interpreted as the total heat loss of the core.

More Product
Heat Flow Asymmetry in Mantle Plumes Request PDF

Heat Flow Asymmetry in Mantle Plumes Request PDF

Request PDF | On Sep 1, 2020, M. D. Khutorskoi published Heat Flow Asymmetry in Mantle Plumes | Find, read and cite all the research you need on ResearchGate

More Product
Mantle plumes seen rising from Earth's core

Mantle plumes seen rising from Earth's core

Sep 04, 2015 Guust Nolet, an emeritus geophysicist at the University of Nice Sophia Antipolis in France, says previous studies have indicated the existence of deep mantle plumes (see Science, 16 January 2004, p.338), but this one sharpens the view at the top and bottom of the mantle.He says the surprising size of the plumes will change the accounting of how Earth sheds internal …

More Product
Rising Plumes in Earth's Mantle: Phantom or Real?

Rising Plumes in Earth's Mantle: Phantom or Real?

Sep 22, 2006 By 1970, a decade or two of geophysical observation beneath the world's oceans had ushered in jostling plates and sinking slabs. But plate tectonics can't explain mid-plate …

More Product
Mantle Plumes - heat flow

Mantle Plumes - heat flow

Subsequent plume models have generally assumed that the uplift results from the dynamic effects of rising plumes [Liu and Chase, 1989; Sleep, 1994] and the associated compositional buoyancy.The thermal effects of these are postulated to be concentrated at the base of the lithosphere and thus to raise surface heat flow at most slightly, because tens of millions of …

More Product
Mantle Plumes - heat flow

Mantle Plumes - heat flow

Subsequent plume models have generally assumed that the uplift results from the dynamic effects of rising plumes [Liu and Chase, 1989; Sleep, 1994] and the associated compositional …

More Product
Mantle plume - Geology Wiki

Mantle plume - Geology Wiki

The source of mantle plumes is postulated to be the core-mantle boundary at 3,000 km depth. Because there is little material transport across the core-mantle boundary, heat transfer must occur by conduction, with adiabatic gradients above and below this boundary. The core-mantle boundary is a strong thermal (temperature) discontinuity.

More Product
Mantle Plume - Concepts - Chemistry Heat Flow and Melting

Mantle Plume - Concepts - Chemistry Heat Flow and Melting

The source of mantle plumes, is postulated to be the core-mantle boundary at 3,000 km depth. Because there is little material transport across the core-mantle boundary, heat transfer must occur by conduction, with adiabatic gradients above and below this boundary. The core-mantle boundary is a strong thermal (temperature) discontinuity.

More Product
On the effect of continents on mantle convection

On the effect of continents on mantle convection

The temperaturedifference and rising together along a large-scalecellular circula- tion (Figure6). ... Continental at the upper boundary, that is, a set of rising plumes breakup is a likely consequenceof the upwelling struc- and descending subductionlike sheets[Houseman,1988; ture,assuggested by Gurnis[1988],andonemaypre- Bercoviciet al., 1989 ...

More Product
(PDF) Heat sources for mantle plumes - ResearchGate

(PDF) Heat sources for mantle plumes - ResearchGate

This excess heat in mantle plumes could reflect either (1) an enrichment of the heat-producing elements (HPE: U, Th, K) in their mantle source leading to an increase of heat production by...

More Product
Latest News
X

CONTACT US

If you are interested in our products, please contact us, your satisfaction is our eternal pursuit!