How did the lava sea in the earth form?

It was the rotation of the Earth from the early period that greatly affected the formation and development of the lava ocean deep in the earth.

The process of forming lava in the Earth's heart

According to Live Science, this is the result of a study by scientists at the University of Muenster, Germany, in the process of finding the optimal plan for forecasting earthquakes and volcanic eruptions, published on November 6 in Geophysical Magazine. Research (Geological research).

Previous studies and calculations have shown that the Earth in the early stages of a giant lava ocean, also known as molten rock , exists between the Earth's crust and core, forming roughly 4.5 to 2.5 billion years ago, with a depth of up to 1,000km.

However, these studies do not take into account the impact of Earth's rotation on the lava ocean. Now, the Muenster University team demonstrates that this rotation has a certain effect in forming the lava ocean as well as tectonic plates above it.

" The rotation itself has a crucial effect on the evolution of the lava ocean in particular and the Earth's history in general," said geophysicist Christian Maas, who led the study.

At the speed of Earth's rotation at that time, silicate crystals were completely submerged to the bottom at the two poles and suspended in the middle of the ocean in the equator.(Graphic: Christian Maas).

The early days of the Earth were much faster than the present. A day at that time only lasts 2 - 5 hours, not 24 hours like today. On the other hand, the earth itself is hotter, making lava more loosely and more movable. Based on these conditions, the team built a computer model that simulated the early Earth. From there they can test how the rotation itself acts on silicate crystals , which is the main ingredient in lava.

When the model does not rotate, heavier crystals sink below and lighter and lighter crystals float upward as usual. The difference started when the research team filmed the Earth model.

"The result surprised me is the significant difference in the process of shifting the crystals at the poles compared to the equator," Maas said.

At the two poles, heavy crystals completely sink to the bottom while light, liquid crystals float on the ocean surface. In the equator, heavy crystals are not sinking at the moment, but at the depths of the ocean, while light, liquid crystals sink to the bottom.

Maas explained the cause of this phenomenon is due to the effect of Coriolis force (a type of force acting on moving objects on a rotating surface). In the equator, Coriolis forces tend to be opposite to gravity towards the center of the Earth and change the path of matter as they sink to the bottom. The heavier the object, the greater the impact of Coriolis force. Therefore, heavy, solid crystals that are suspended in the ocean and lighter crystals sink to the bottom.

Maas also noted that this research model is currently conducting separate studies of poles and equations.

"The next step in the study will be to build an entire model of the ancient lava ocean, with all the poles, equations and regions between them," he added. "Even with state-of-the-art computers, the simulation process will take several months to complete."

However, the research results are worth the wait because it will help us visualize the way in which the lava ocean in the ground and the tectonic plates form, thus predicting when the volcanic eruption or earthquake.

Moreover, understanding more about the formation process of this ocean also sheds light on the time when magnetic poles appear, which play an important role in creating the barrier for the planet to escape solar radiation. . This shield is a prerequisite for the formation of life on Earth.