Volcanic eruption on the earth is a peculiar geological phenomenon. It is one of the manifestations of crustal movement and the strongest display of the earth’s internal heat energy on the surface. Will there be volcanic eruptions on the moon?
The cause of the earth’s volcanic eruption
The reason why volcanoes erupt is that the temperature and density inside the earth are not uniform, and mantle convection or mantle plume is formed inside the mantle. If the high temperature material rises to the shallow part of the earth, because the pressure decreases, partial melting will occur. Under the action of external force, these molten materials gather together and form magma sacs in the shallow part of the earth. When the pressure of the magma sac is greater than that of the stratum, the magma will break through the crust along the fault or weak place, causing volcanic eruption.
In addition to this reason, the interaction between plates can also lead to volcanic eruptions. In the subduction zone or collision zone of plates, local high temperature is formed due to friction, and dehydration of some water bearing minerals also reduces the melting point of rocks. At this time, magma sacs will be formed, which will lead to volcanic activities.
Will there be volcanic eruptions on the moon like the earth?
In fact, in the early days of the moon’s formation, its volcanic activities were very active. At that time, the volcanic movement was so strong that the craters on the surface of the moon were immediately buried by the eruptive magma.
There are many volcanoes on the moon. Compared with the earth’s volcanoes, these volcanoes are very old. Because the vast majority of volcanoes are between 3 billion and 4 billion years old, while volcanoes on earth are generally less than 100000 years old.
However, at present, although there are craters formed by volcanoes on the moon, there are no volcanic eruptions and no signs of geological activities. Therefore, the moon is also called the “extinguished planet” by astronomers.
So why didn’t the moon erupt? The scientists made the following explanation.
The gravity of the moon is only one sixth of that of the earth, which shows that the flow resistance of the lunar lava is smaller than that of the earth, so its lava movement is more stable. This explains why most of the dark areas of the moon are flat and smooth, and smooth lava flows are easier to spread. Therefore, the volcanic eruption of the moon will only form a wide and flat lava plain, rather than a volcanic cone like the earth.
Scientists believe that water also has a very important impact on volcanic eruptions, and there is no water on the moon, so lava can only flow out of the ground peacefully, but not erupt.
Since the human landing on the moon, 360 kg of lunar rocks have been brought back from the moon. Scientific researchers have studied these rocks and found that the density of the rocks in the lunar core is very high in the solid state, and the titanium content of the rocks in the lunar core is also amazing. Due to large-scale volcanic eruptions in the early days of the moon, a large number of titanium rich rocks on the lunar surface were brought to the lunar core. Because the titanium compound reacts with other minerals to form magma, because the magma density is too high, there is no volcanic eruption on the moon.
Therefore, the moon had volcanic eruptions a long time ago, but for various reasons, it became what it is now. What do you think of lunar volcanoes? Welcome to comment area.