Asthenosphere. The asthenosphere is the upper zone of our Earth’s mantle. Located below the lithosphere, approximately between 30 and 130 kilometres deep. It is formed or composed of solid and semi – fused materials that allow continental drift. The asthenosphere is composed of rock material. It is formed by iron and magnesium silicates.

The lithosphere rides on the asthenosphere. The asthenosphere is solid but it can flow, like toothpaste. The asthenosphere and Lithosphere constitute the utmost concentric layers of our earth. The asthenosphere encompasses much of the upper mantle of the earth. Then, the lithosphere comprises the uppermost mantle as well as the overlying crust.

2016年6月12日 · color(darkorange)"The asthenosphere" is a layer (zone) of Earth’s mantle lying beneath the lithosphere. It is a layer of solid rock that has so much pressure and heat the rocks can flow like a liquid. The rocks are also less dense than the rocks in the lithosphere It is believed to be much hotter and more fluid than the lithospher Asthenosphere extends from about 100 …

2016年4月15日 · Asthenosphere is more yielding to perristent stress and softer than the lithosphere. It is a low-viscosity shell Asthenosphere is in-between lithosphere and a part of the upper mantle. It extends. from about 100 km, to nearly 700 km. The broad classification for the Earth's interior, based on mechanical properties, is lithosphere, asthenosphere,mesosphere, …

2015年12月13日 · Asthenosphere is a layer of the Earth which lies below the crust and at the upper part of the mantle. This is where the high pressure and pressure allows solid rock to flow slowly,or change in shape.(plasticity)

It boils down to temperature: the asthenosphere is warm enough to deform plastically, while the lithosphere is colder and rigid. You can pull warm taffy easily, whereas cold taffy is hard to pull and likely to break if you try. So it is with the rock in the upper mantle, except that "warm" in this case is about 1300°C or more. The boundary between the lithosphere and the asthenosphere …

2016年4月30日 · No. The Mohorovicic Discontinuity is a change in composition of the rock, but it lies largely within the rigid lithosphere. The plastic asthenosphere is further down. The Mohorovicic Discontuity is the boundary between the crust and mantle, where the basalt present in the crust gives way to heavier silicate rocks such as periodotite and dunite, which are …

2016年3月25日 · There is no liquefied part in the asthenosphere that is in-between lithosphere above and upper mantle below. It is a low-viscosity shell. It is softer than lithosphere in reacting to stress. Asthenosphere extends from about 60 miles down to about 450 miles. Both primary and secondary seismic waves are propagated through asthenosphere.

2018年3月2日 · Geosphere, lithosphere, crust, mesosphere, mantle, core, asthenosphere, and tectonic plates. 1. Geosphere:- It is the solid part of the earth that extends from center of the core to the surface of the earth. Lithosphere:- The cool rigid outer layer of the earth which includes the crust and the upper core of the mantle. Crust:- Made up of many light elements and is the …

2016年2月20日 · Asthenosphere is is a low-viscosity shell that extends from 100 km down to 700 km, The solid crust inclusive of some upper part of mantle is lithosphere extends below up to 100 or 200 km. Beneath land surface, lithosphere extends up to 100 km, nearly. Beneath sea it is thicker, up to 200 km, nearly. The thickness of lithosphere is determined from brittle and …