How Phase Transformations Affect Mantle Convectionhow phase transformations affect mantle convection in the upper mantle. There seems to be general agreement that the driving mechanism itself is somedoi:10.1038/physci237065a0Nature Physical ScienceNature Physical Science...
Why do most earthquakes occur along tectonic plate boundaries? How are volcanoes created by tectonic plate movement? How are plate tectonics and volcanoes related? Why do so few earthquakes happen in the Earth's mantle? Do plate tectonics cause earthquakes? How do plate tectonics affect the Earth...
What geological events occur because of convection currents in magma? How do plate tectonics affect the Earth's surface? How does magma change during crystallization? What does subduction of tectonic plates mean? What type of geologic formation can volcanoes create?
aGeodynamics is a subfield of geophysics dealing with dynamics of the Earth. It applies physics, chemistry and mathematics to the understanding of how mantle convection leads to plate tectonics and geologic phenomena such as seafloor spreading, mountain building, volcanoes, earthquakes, faulting and so...
Below the crust is a soft plastic-like layer called the mantle. The convection currents of the molten rock in the mantle lubricate the undersides of the tectonic plates and allow them to move. When the large rocky plates collide, they can create mountains and other geological...
Two-dimensional convection models with moving continents show that continents profoundly affect the pattern of mantle convection. If the continents are wider than the wavelength of the convection cells (~3000 km, the thickness of the mantle), they cause neighboring deep mantle thermal upwellings to ...
The large magnitude of the dimensionless Rayleigh number(Ra ~108) for Earth's ~3 000 km thick mantle is considered evidence of whole mantle convection. However, the current formulation assumes behavior characteristic of gases and liquids and also assumes Cartesian geometry. Issues arising from ...
We discuss the role of partial melt in lubricating plate motion, and explain why the Ra is not applicable to the multi-component upper mantle. When conduction is insufficient to transport heat in the Earth, melt production and ascent are expected, not convection of solid rock.Anne M. ...
The asthenosphere is a slow-moving layer of the Earth's mantle that is made mobile through convection currents. The heat in the mantle helps to keep... See full answer below.Become a member and unlock all Study Answers Start today. Try it now Create an account Ask a question Our ...