Scientists speculate that the internal structure of Venus may be similar to that of the Earth. According to the structure of the earth, the main components of Venus mantle are silicates dominated by olivine and pyroxene, and a crust dominated by silicates, the core of which is composed of iron-nickel alloy.
Venus has an average density of 5.24g/cm3, ranking third among the eight planets (Pluto was classified as a dwarf planet in 2006, so it is called the eight planets). An iron core with a diameter of 3,000 kilometers, molten stones filled most of the planets to form the mantle.
Geological characteristics of Venus:
About 90% of Venus' surface is formed by basalt lava solidified not long ago, but there are also a few craters. Venus may be similar to the earth inside: the core with a radius of about 3000 kilometers and the mantle composed of lava make up most of Venus. The latest data from Magellan shows that the crust of Venus is thicker and stronger than previously thought.
It can be inferred that Venus has no movable plate structure like the Earth, but there are a lot of regular volcanic eruptions on its surface. The oldest feature on Venus is only 800 million years old, and most areas are very young (but it is also hundreds of millions of years old). At that time, a large area of mountain fires scrubbed the early surface.
Reference to the above content: Baidu Encyclopedia-Venus