? However, can you imagine that volcanic eruption can also bring some benefits to the "health of the earth"
It can create land resources for mankind. For example, the beautiful island of Hawaii in the United States was formed by volcanic eruption. Volcanoes erupt almost every year in Hawaii. After the magma flows to the seaside, it solidifies there and becomes land. If the volcano erupts strongly, the island of Hawaii can even expand by several square kilometers a year.
(2) Volcanic ash is a good natural fertilizer. These minerals are rich in nutrients and can make the land more fertile. Mulberry trees around Mount Fuji in Japan are growing well, which is beneficial to the growth of silkworms. Many sweet grapes can be planted where Mount Vesuvius is located. Hawaii in the United States has also become a famous tourist destination because of the strange sight of volcanic eruption!
Volcanoes can create many natural landscapes. Many famous scenic spots in the world are mostly located in volcanic areas, such as Yellowstone National Park in the United States, Hawaii Island, Mount Fuji in Japan, Changbai Mountain in China and Wudalianchi. Many tourists are attracted to visit every year.
④ Volcanic eruption can bring us rich mineral resources. Volcanism has formed many mineral resources, including nonmetallic resources and metallic resources. Volcanic ash can be used as a raw material for concrete and can also be made into a harvester. Pumice can be used as building materials, such as pumice, volcanic ash and volcanic slag produced in Changbai Mountain, China, which are all good filling building materials. When maintaining advanced airports and stadiums, this kind of volcanic slag is a good filler, and many advanced cements are also made of volcanic slag. It can be sold directly in woven bags, which is more expensive than flour.
⑤ Due to the porosity of the ejected rock, it can become a reservoir of oil, gas or other minerals after certain transformation.
⑥ Many mineral resources, including gold and copper, are related to volcanism, so volcanoes can create many mineral resources for us. Magmatic activity will be accompanied by a large number of hot water dissolved with various minerals, that is, hydrothermal movement. Due to different physical and chemical properties, water and magma will gradually separate to form deposits through various actions, which can form gold, silver, copper, lead and zinc deposits.
? The volcano spewed out almost everything useful. Many minerals are closely related to volcanic eruptions. For example, many precious gems are erupted from volcanoes. Different types of intrusive rocks also control specific endogenetic deposits. Tungsten, tin, crystal, gold and emeralds will be found in granite or its vicinity, and nonmetals such as agate will also be produced in volcanic rocks. Yingshi, corundum, topaz, diamond, garnet, tourmaline, volcanic glass, olivine, spinel, zircon, beryl (including emeralds, aquamarine, etc. ) and so on.
Besides these, volcanoes can also bring a lot of geothermal resources. People can use geothermal resources to build power stations and hot spring sanatoriums, and so on.
From this point of view, volcanic eruption is not only harmful to human beings, but also has many benefits.