Why is the interface between the Earth s crust and mantle called the Mohorovich interface 5

The interface between the earth's crust and the mantle was discovered by the Yugoslav scholar Moholovich in 1909, so it was named after him, called the Moholovich discontinuity, referred to as the Moho surface (or Mohs surface).

The boundary between the mantle and the different substances above and below is called the discontinuity. The outer one is named the Mojo discontinuum, and the deeper one is the Gutenberg discontinuity.

On the Moho surface, the propagation velocity of the longitudinal and transverse waves of ** waves increases significantly, the elasticity and density gradually increase with depth, and the density and hardness of mantle materials are greater than those of the crust. The average chemical composition of the materials above this surface is similar to that of basalt, and the density is about; The average chemical composition of the following substances on this surface is similar to that of peridotite, and the density is about that. The temperature of the moho surface is 400-1000

The specific parameters of the moho surface are as follows:

Depth: 33

**Wave Speed: Longitudinal Wave: Transverse Wave:

Elastic (10 dyn) bulk variable modulus: shear modulus:

Density: gravity: 984 s

Temperature: 400-1000

Going down through this interface, both longitudinal and transverse wave velocities increase suddenly.

Because Mohorovich found it!

The Moholovic interface is the interface between the earth's crust and the mantle, which was discovered by the Croatian scientist Moholovic in 1909, so it is named after him, called the Moholovic discontinuity, referred to as the Moholovic surface.

It was discovered during a study of a ** in 1909. Some ** waves arrived at the observatory faster than expected. In the vicinity of this interface, the speed of the longitudinal wave increases abruptly from left to right; The speed of the transverse wave also increases from abrupt to.

For this interfacial band with a sudden rate jump, he refers to the inner and outer layers of what we call the mantle and crust. The interface between the Earth's crust and the mantle is also known as the Moholovich discontinuity (Moholovich surface).

The inner layer of the earth, located between the Moho and Gutenberg faces, is the mantle.

Analysis: The Moho interface is the dividing line between the Earth's crust and the mantle.

In the inner sphere of the Earth, the two spheres divided by the Moho interface are the crust and the mantle.

Among them, the crust is above the Moho interface, the inner sphere of the earth between the Moho interface and the Gutenberg interface is (mantle), and the part below Gutenberg is (core).

The Moho surface is the dividing line between the Earth's crust and the mantle layer

So the answer is: false

Coton County said the two Atlantis were not related at all. Plato's description of the legend of Atlantis in ** has not yet been determined, but it is often believed that it is located in the Atlantic Ocean beyond the Strait of Gibraltar. The Atlantis Shoal, where the ocean drilling was carried out, is located in the southwest Indian Ocean at 32°42' N and 57°17'E longitude, with a dome uplift at the summit of the ridge that is 40 km long and 30 km wide.

The former is in the Atlantic Ocean and the latter in the Indian Ocean. The latter is just a sensational name for scientists to attract attention.

Why choose Atlantis Shoal for drilling the earth's crust? According to Professor Zhu Huaiyang of the State Key Institute of Marine Geology at Tongji University, the average thickness of the Earth's continental crust is about 40 kilometers, the thickness of the oceanic crust is about 5 10 kilometers, and the thickness of the crust of the Atlantis Shoal is even thinner, only 3 kilometers. Drilling holes in the thinnest places is the easiest option.

Scientists are convinced that this is an ideal "tectonic window" to study the transition of the Earth's crust and mantle. In fact, it's a great place for scientists to study the Earth. In the past few years, in addition to ocean drilling, scientists have also carried out a variety of scientific surveys such as excessive beam detection, magnetic anomaly survey, gravity anomaly survey, underwater robot geological sampling, manned deep submersible geological sampling, geological trawling, etc., and created a high-resolution bathymetric map of about 25 square kilometers.

Therefore, the conventional wisdom is that magnetic minerals are not magnetic in the high temperature environment of the mantle. A homogeneous non-magnetic mantle underlies geomagnetic inversion, but hypothetical assumptions that this premise have recently been questioned by a variety of observations. For example, airborne and satellite magnetic measurements, particularly the subduction zone with low thermal flow velocity and the Craton area (;.

On the other hand, the remainder of the self-discovery (ferretal) in the body of the coat of arms. 2013) also supports that the Earth's magnetic interface may be deeper than previously thought. However, their contributions to deep self-anomalies and self-documentation** remain unknown.

Iron oxides have a high conversion temperature and are the substances with the highest probability of deep magnetic anomalies**. Magnetite is the main magnetic mineral in the shallow (less than 300 km) section and is a by-product of the serpentinization of the gabbrodotite and the hydrothermal conversion of the Liangzhong basalt. When the water-rock ratio is large enough, the magnetite is further oxidized to hematite, forming an oxide layer several kilometers thick, the growth of which is only affected by the permeability of seawater in the ocean crust.

This rock subducts iron oxides into the mantle along with the subduction of the oceanic crust. With the increase of depth, the stability of magnetite depends on the decomposition into equimolar hematite and Fe4O5 at conditions greater than 10GPA and greater than 1000K, and only at 20GPA can it be recombined to form a new high-pressure magnetite, with 300-600km of hematite as the dominant magnetic mineral. However, due to the technical limitations of the experimental conditions, the research on the magnetic conversion between the hematite bronze statues is still weak under the relevant temperature and pressure conditions.

Scientists guessed by the waves produced during nuclear tests. Waves travel faster in hard rocks and slower in softer rocks. According to this, scientists divide the earth into different circles, the thin layer of the earth's surface is called the crust, which is mainly composed of various rocks, the center of the earth is called the core, and the part between the core and the core is called the mantle.

Mainly because a series of management and inspections are carried out every day in this area, so once there are some changes, then it will be clearly observed, and there are also very high achievements in this area.

Because it is not the same to feel the vibration through two different mediums and different densities, scientists have measured it in this way.

Scientists have learned about this through continuous research, and through working around the clock, they have made a major breakthrough.

The Moho interface is not the dividing line between the lithosphere and the mantle. The Moho interface is the dividing line between the Earth's crust and the mantle.

The lithosphere includes the top of the Earth's crust and upper mantle, that is, the part above the asthenosphere of the Earth's crust and mantle. The depth of the Moho interface is shallower than that of the asthenosphere in the same region.

The interface between the crust and the mantle is the Moho interface, and the interface between the mantle and the core is the Gutenberg interface

Therefore, b

a. The interface between the earth's crust and the mantle is the Moho interface, and the asthenosphere is located in the upper part of the mantle, which is a circle composed of plastic materials, which is the main source of magma, so it does not conform to the topic;

b. The Gutenberg interface is the interface between the mantle and the core, so it does not conform to the topic;

c. The interface between the earth's crust and the mantle is the Moho interface, so it is correct;

d. The lithosphere refers to the top of the upper mantle and the entire crust, so the lithosphere includes the crust and the part of the mantle above the asthenosphere, so it does not conform to the topic

Therefore, c

The Moho interface is above the crust and below the mantle; The Gutenberg interface is above the mantle and below is the core

Therefore, a