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The lower boundary of the asthenosphere is not well defined. It lies below the lithosphere and above the lower mantle and outer core. It usually lies at depths of 80-200 km but can range as deep as 700 km.

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10y ago

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What are the structural zone of earth?

Lithosphere, Asthenosphere, Mesosphere, outer core, inner core


Plasticlike layer of Earth on which the lithosperic plates float and move around?

The plasticlike layer of Earth is the asthenosphere. It is a zone of the upper mantle where rock is soft and capable of gradual flow. The lithospheric plates float and move on top of the asthenosphere, contributing to the movement of tectonic plates.


What is The transition zone between the asthenosphere and the crust?

The transition zone between the asthenosphere and the crust is called the lithosphere. It is the rigid outer layer of the Earth that consists of the crust and the uppermost part of the mantle. The lithosphere is broken into tectonic plates that float and move on the semi-fluid asthenosphere beneath it.


What is the rigid zone above the asthenosphere that includes the crust and upper mantle?

The rigid zone above the asthenosphere that includes the crust and upper mantle is called the lithosphere. This layer is divided into tectonic plates that float on the semi-fluid asthenosphere and move due to the convection currents beneath them.


What is the zone above the asthenosphere?

The asthenosphere.


Plates float on the?

asthenosphere


Tectonics plates float on what semiliquid layer?

Tectonic plates float on the asthenosphere, which is a semi-liquid layer of the Earth's upper mantle. The movement of these plates is driven by convection currents in the asthenosphere.


Tectonic plates float on what?

The tectonic plates float on the lithosphere. This overlies the asthenosphere.


Is asthenosphere a plate boundary?

No. The asthenosphere is a ductile layer of the mantle that tectonic plates float on top of.


Where do plates float on the asthenosphere or the lithosphere?

l;k


What layer do the lithospheric plates float around on?

Asthenosphere


What is the part of the earth that the lithosphere plates float on?

Asthenosphere