What is the function of Moho discontinuity?
The Mohorovićić discontinuity, also known as the Moho, is a discrete jump in seismic wave velocities – a seismic discontinuity – that has come to define the boundary between the crust and the mantle. Its significance stems from its clear demarcation of the first boundary of the chemically differentiated solid Earth.
What is the Moho discontinuity made of?
As you probably know, the Mohorovicic Discontinuity is the boundary of the earth’s crust and the mantle. It would be made of elements such as oxygen, iron, sodium, silicon, and aluminum, among others. These elements would be present in rocks that make up both the Earth’s crust and mantle.
What do you understand by Mohorovicic Discontinuity?
The Mohorovicic Discontinuity, or “Moho,” is the boundary between the crust and the mantle. The red line in the diagram shows its location. In geology the word “discontinuity” is used for a surface at which seismic waves change velocity.
What is the depth of Moho?
Also termed the Mohorovicic’ discontinuity after the Croatian seismologist Andrija Mohorovicic’ (1857-1936) who discovered it. The boundary is between 25 and 60 km deep beneath the continents and between 5 and 8 km deep beneath the ocean floor.
What is meant by Moho discontinuity line?
Moho discontinuity is defined as the boundary between Earth’s crust and the mantle, observed by a sharp increase in the velocity of the seismic waves passing through the Earth. The name Mohorovicic discontinuity was received from Croatian geophysicist Andrija Mohorovičič, in 1909.
Is the Moho solid or liquid?
The “Moho”, as it is often called for brevity, is the boundary between the crust and the mantle. While the mantle has liquid further down, it’s solid at the top just like the crust — but with a different mineral composition.
What is the difference between lithosphere and asthenosphere?
The lithosphere (litho:rock; sphere:layer) is the strong, upper 100 km of the Earth. The lithosphere is the tectonic plate we talk about in plate tectonics. The asthenosphere (a:without; stheno:strength) is the weak and easily deformed layer of the Earth that acts as a “lubricant” for the tectonic plates to slide over.
What is the Moho model?
The Model of Human Occupations (MOHO) is a model that describes how humans generate and modify their occupations in interaction with environment, which presents a dynamic open cycle system of human actions.
What is the meaning of Moho?
Definition of Moho : the boundary layer between the earth’s crust and mantle whose depth varies from about 3 miles (5 kilometers) beneath the ocean floor to about 25 miles (40 kilometers) beneath the continents.
What is the temperature of the Moho?
95% of Moho temperature estimates are between 444–892 °C, with extrema at 200 and 1160 °C. Temperatures over 800 °C correlate strongly with occurrences of <10 Ma magmatism, suggesting a weak lower crust. Moho temperature at depths varying from 20 to 50 km.
What is Moho discontinuity in geography?
Where is the Moho line of discontinuity located?
Moho, or Mohorovičić discontinuity, boundary between the Earth’s crust and its mantle. The Moho lies at a depth of about 22 mi (35 km) below continents and about 4.5 mi (7 km) beneath the oceanic crust. Modern instruments have determined that the velocity of seismic waves increases rapidly at this boundary.