Sentences with asthenosphere
as·then·o·sphere
A a - For one, it softens mantle rocks, thereby preparing the way for an asthenosphere - the soft layer underlying the plates.
- Currents beneath the plates move the plates in different directions and driving all this is radioactivity deep in the earth's mantle which keeps the under layer - the asthenosphere - molten.
- Across the ridge, the asymmetric flow pattern in the asthenosphere will cause differential drag at the base of the lithosphere.
- The models consist of a two-layered brittle-ductile system representing the overriding continental lithosphere, overlying a low-viscosity layer simulating the asthenosphere to provide isostatic support.
- Magma from the asthenosphere rises up in the form of volcanos.
- Because the radioactive source of heat is deep within the mantle, the fluid asthenosphere circulates as convection currents underneath the solid lithosphere.