Will the Extinction Boundary one day become the Growth Boundary?

Basically, no. Ultramafic lava with very little siliceous content tears the entire lithosphere from the mantle and erupts to form new silicon-magnesium layers of the crust, which will push away the adjacent continental plates (such as the Atlantic Ocean); At the same time, oceanic plates on the other side of the globe (such as the Pacific Ocean) are pressed under the continental plates due to the movement of the surrounding continental plates towards themselves, and they are washed into the mantle and melted again (the oceanic plates are much denser than the continental plates, so they can only be below), forming lava with more impurities back into the mantle.

Obviously, you will find that the magma at the growth boundary is rising, and the magma at the extinction boundary is descending (although there is also a magma pool formed between the oceanic plate and the continental plate, and the magma will be sprayed up). As a result, the magma flow in the asthenosphere under the extinction boundary replenishes the growth boundary, thus constituting a "mantle convection", forming a cycle of mantle material.

So, to turn the extinction boundary into a growth boundary, as you said, you have to reverse the direction of the mantle convection and create an upwelling at the extinction boundary.

Here we would like to explain the driving force of mantle circulation, which originates in something called a "lava hot column" in the Earth's core, very deep below the growth boundary. The mantle there is very hot (either due to the dynamics of the mantle circulation, or due to the high temperature somewhere in the core below, or due to thinner oceanic plates, less pressure, and rock expansion) and is constantly rising upwards. Because the oceanic plate is already thin, it quickly melts the entire crust and then mantle material ejects.

Thus, the position of the growth boundary (including those of the hot columns of lava located inside the plate, such as Hawaii) is immobile relative to the core, because there is a continuous upwelling in the whole core, and there is no growth boundary without upwelling.

There is nothing below the extinction boundary, it is only the place where the plates collide, and it has nothing to do with the core and mantle below. However, due to the squeezing of the plates, a large ice-like rock called a "megalith" or "megalith" has accumulated under the continental plate. The rock continues to develop downward, inserts into the lower mantle, and then continuously pulls the continent into the mantle, and the buoyancy of the continent forcibly floats the continent upward, and the two forces are balanced.

It is generally believed that this is a large stabilizer for the continent to maintain its own stability. The magma formed by those sinking rocks formed a "mantle cold column".

It can be seen that there is no upwelling from the earth's core below the extinction boundary, and naturally there will be no mafic volcanoes. Therefore, the death boundary does not become the growth boundary.

It's hard to say! I don't know what the planets collided that day, it could happen! But we can't see it, hehe!

Growth boundaries and extinction boundaries are mainly classified by their location.

A growth boundary boundary, also known as a discrete boundary, is a boundary between two plates that are separated from each other. It is mostly found in mid-ocean ridges or oceanic ridges and is characterized by shallow sources**, volcanic activity, high heat flux, and extension. The axis of the mid-ocean ridge is the center of seafloor spreading, where mantle material upwells and the plates on both sides separate and open due to mantle convection.

The upwelling material condenses to form a new lithosphere on the ocean floor of the Sanqian Dan, which is added to the trailing margin of the plates on both sides.

The extinction boundary, also known as the convergence boundary, is the boundary between two tectonic plates that converge and die out with each other. Equivalent to trench or ground sutures. It can be divided into two subcategories:

The oceanic plate subducts under another plate in the trench, which is called the subduction boundary, and the modern subduction boundary is mainly distributed in the periphery of the Pacific Ocean. When the oceanic plate is subducted, the two continents meet and converge and begin to collide, which is called the collision boundary, and the Alpine-Himalayan belt on the southern margin of the Eurasian plate is a typical example of a plate collision zone.

The theory of plate tectonics believes that the lithosphere inside the earth is divided into six major plates, and the plates are in constant motion, and the movement modes of the plates and the plates are colliding and stretching.

Growth boundary: Ridges are the birthplace of new oceanic crust. Mantle material emerges from the huge cracks at the top of the ridge and reaches the top to cool and solidify, forming the crust of a new ocean.

Later, the magma that continued to rise pushed the oceanic crust formed earlier to both sides at a rate of several centimeters per year, causing the seafloor to continue to renew and expand in the middle and late. In addition to the formation of ridges, growth boundaries also form new oceans, such as the Atlantic Ocean; Rift valleys, such as the Great Rift Valley.

Extinction Boundary: When the expanding oceanic crust meets the continental crust, it subducts into the mantle beneath the continental crust, gradually melting and dying out, forming deep trenches.

In addition to the formation of trenches, the extinction boundary will also form huge folded mountain ranges, such as the Himalayas; island arcs, such as eastern Asia; Mountain ranges, such as the Cordillera Mountains.

1. The two types are different.

Growth boundaries are discrete boundaries, also known as expansive boundaries, which are boundaries between two plates that are separated from each other.

The extinction boundary is a convergent boundary, a boundary between two tectonic plates that converge and die out with each other.

2. The characteristics are different.

Growth boundaries are commonly found in mid-ocean ridges or upwells and are characterized by shallow sources**, volcanic activity, high heat flux, and extension. The axis of the mid-ocean ridge is the seafloor spreading ocean-floor lithosphere, which is added to the trailing margin of the plates on both sides of Shenbu.

Extinction boundary: Where the Eurasian plate auspicious block, the African plate, the Antarctic plate, and the Indian Ocean plate collide between the two plates, it is called the extinction boundary. Extinct plates are prone to the formation of trenches and orogenic belts. Equivalent to trench or ground sutures.

3. The performance is different.

Growth boundary: If the plate splits in the ocean, then a ridge is formed. Because the oceanic crust on the ocean floor is thinner than the continental crust on the land, magma gushes out and cools to form ridges.

For example, in the middle of the Atlantic Ocean, due to the American plate, the Eurasian plate and the African plate form a mid-ocean ridge (ridge).

Extinction Boundary: Between the continental crust and the continental crust, that is, the perishing boundary on land. The extrusion of tall mountain ranges such as the African Plate and the Eurasian Plate will form the boundary in the Alps, which is a well-known orogenic belt.

There is also the Himalayan mountain system between the Indian Ocean plate and the Eurasian plate.

The plate extinction boundary is the place where two plates are extruded, such as two tables, and pulled together in the middle, and the middle boundary will disappear.

The plate growth boundary is the place where two plates are opened, such as two tables, and pulled together on both sides, and the middle boundary will appear.

For example, if the Eurasian and Pacific plates are squeezed in the middle, they form extinction boundaries, island arcs and ocean trenches. The sub-sparrow belt European plate and the African platetic percolation block stretch the sail ridge on both sides, forming a growth boundary, and the phenomenon of continuous expansion of the Mediterranean Sea appears.