What is Mohorovicic Discontinuity explain in brief?
The Moho is the boundary between the crust and the mantle in the earth. This is a depth where seismic waves change velocity and there is also a change in chemical composition. Also termed the Mohorovicic’ discontinuity after the Croatian seismologist Andrija Mohorovicic’ (1857-1936) who discovered it.
Where is Gutenberg discontinuity found?
Unsourced material may be challenged and removed. The Gutenberg discontinuity occurs within Earth’s interior at a depth of about 2,900 km (1,800 mi) below the surface, where there is an abrupt change in the seismic waves (generated by earthquakes or explosions) that travel through Earth.
What causes the Moho discontinuity?
The Moho discontinuity occurs at an average of about 8 km below the ocean basins and 30 kilometres below the Earth surface. The cause of moho is considered to be the change in rock composition from the rock containing feldspar (above) to the rock that contains no feldspar ( below). 2. What is Earth Crust?
What is Mohorovicic Discontinuity and Gutenberg discontinuity?
Mohorovicic Discontinuity: This is the transition zone between the crust and the mantle. Repetti Discontinuity: This separates the upper mantle from the lower mantle. Gutenberg Discontinuity: This is the transition zone between the lower mantle and the outer core.
What is lemon discontinuity?
The Lehmann discontinuity is an abrupt increase of P-wave and S-wave velocities at the depth of 220 km (140 mi), discovered by seismologist Inge Lehmann. The thickness is 220 km. It appears beneath continents, but not usually beneath oceans, and does not readily appear in globally averaged studies.
What did Mohorovičić discovered?
Mohorovicic’s major contribution for which he is famous is the discovery of the discontinuity between the mantle and the crust. In 1909 a major earthquake in Croatia provided Mohorovicic with empirical evidence that he used to discover the division between the crust and the mantle, as well as the mantel and the core.
What is the function of the Gutenberg?
What is the function of the Gutenberg? Thus, Gutenberg established an accurate boundary line — or discontinuity — that separates and divides the lower mantle from the outer core. The lower mantle above the Gutenberg line is solid, but the outer core below the line is liquid molten.
What is Gutenberg discontinuity Class 9?
Gutenberg Discontinuity is the boundary between mantle and core. It is found at about 8 km beneath the oceans and about 32 km beneath the continents.
Why is the Moho important?
The Moho has played a large role in the fields of geology and earth science for well over a century. By observing the Moho’s refractive nature and how it affects the speed of P-waves, scientists were able to theorize about the earth’s composition. These early studies gave rise to modern seismology.
Why is the Moho of importance?
The MOHO allows us to dive into the why and how our patients live, work, and engage with their environment. In doing so, we can better understand what is important to them (i.e. their occupations) and integrate this into practice, which in essence is what makes us occupational therapists.
What is Gutenberg discontinuity Shaalaa com?
Solution. Moho Discontinuity is the boundary between crust and mantle and Gutenberg Discontinuity is the boundary between mantle and core. Concept: Earth’s Structure.
Where is Conrad discontinuity located?
Conrad discontinuity refers to the zone between the upper crust and lower crust.
What is the Moho discontinuity?
The ‘Moho Discontinuity’ is the boundary between the crust and mantle. It has been named so as it was discovered by Croatian Seismologist Andrija Mohorovicic. This boundary marks a change in the seismic waves velocity from the crust to the uppermost mantle within the lithospheric plate. [Image will be uploaded soon]
What is Mohorovicic discontinuity?
Mohorovicic discontinuity, also known as moho discontinuity is the boundary between Earth’s Crust and its Mantle. The moho lies at the depth of 30-50 km below the continents and 5-10 km below the sea level in the ocean.
What is the Moho?
The moho lies at the depth of 30-50 km below the continents and 5-10 km below the sea level in the ocean. It is defined by the discontinuous changes in the velocity of seismological waves as they pass through the densities of rock. The moho lies almost entirely within the lithosphere.
How deep is the Moho discontinuity in the ocean?
The Moho discontinuity is 5-10 kilometres (3-6) mi below the ocean base and 20 – 90 kilometres (10 – 60) mi below the continental surface with an average of 35 kilometres (22 mi).