EARTH SCIENCE
EARTHQUAKES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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this layer is too hot
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this layer is too rigid
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it is flexible and bends easily when stressed
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all its pressure is slowly released and doesn’t build up
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Detailed explanation-1: -Answer and Explanation: Yes, deep zone earthquakes can occur in the asthenosphere. The asthenosphere is the viscous and mechanically weak layer of the upper mantle of the Earth beneath the lithosphere. The asthenosphere is about 80 to 200 km beneath the Earth but it is nearer to the surface in oceanic plates.
Detailed explanation-2: -Convection currents generated within the asthenosphere push magma upward through volcanic vents and spreading centres to create new crust. Convection currents also stress the lithosphere above, and the cracking that often results manifests as earthquakes.
Detailed explanation-3: -The asthenosphere is the denser, weaker layer beneath the lithospheric mantle. It lies between about 100 kilometers (62 miles) and 410 kilometers (255 miles) beneath Earth’s surface. The temperature and pressure of the asthenosphere are so high that rocks soften and partly melt, becoming semi-molten.
Detailed explanation-4: -Tensional stress (or extensional stress), which stretches rock; Compressional stress, which squeezes rock; and. Shear stress, which result in slippage and translation. 28-Aug-2013