Have you ever wondered what makes up the earth’s crust? What creates those magnificent mountains and caves we see in pictures? The answer is igneous rocks. These rocks are created when molten lava cools and solidifies. They can be found all over the world, forming a vital part of our planet’s landscape. In this blog post, we’ll explore are igneous rocks hard or soft and where are igneous rocks found in everyday life. Also, the uses of igneous rocks will be discussed as well! So put on your geologist hat, and let’s get started!
1. Which Type of Rocks are used in your Daily Life?
There are a variety of rocks that are used in our daily lives:
- The most common type of rock is sedimentary rock. This type of rock is made up of smaller rocks that have been combined together over time.
- Another type of rock that is commonly used is igneous rock. This type of rock is made up of the eruption of volcanoes.
- Metamorphic rock is made from preexisting rocks that have been changed by intense heat or pressure.
2. How Igneous Rocks are formed?Image by Kathy VanDeventer from Pixabay
Before understanding the uses of igneous rocks, let us know the process of their formation. Igneous rocks are created when boiling hot and the molten rock cools and crystallizes. This can happen underground, where the heat required to melt the rock is provided by the Earth’s hot interior. The molten rock, called magma, rises to the surface and is ejected from volcanoes.
Geologists classify igneous rocks into two main categories: intrusive and extrusive. Igneous rocks make up a large part of the Earth’s crust. They form when magma cools slowly deep underground, giving them ample time to grow large crystals. So, are igneous rocks hard or soft? Let’s find out. (See What are the Different Layers of Rocks called?)
3. Are Igneous Rocks Hard or Soft?
Igneous rocks are very hard. This is because they are made of solidified lava or magma. The molten rock cools down and becomes harder over time. Depending on the composition of the magma, igneous rocks can be either fine-grained or coarse-grained. The size and shape of the grains, too contribute to the overall hardness of the rock. (See 3 agents of metamorphism)
4. How many Igneous Rocks are there?
Igneous rocks are categorized into types:
- Extrusive igneous rocks(Volcanic rocks) are formed when magma cools and solidifies on the surface of the Earth.
- Intrusive igneous rocks are formed when magma cools and solidifies below the surface of the Earth. The largest group of intrusive igneous rocks is granite.
5. What Igneous means?Photo by Gareth David on Unsplash
After learning about are igneous rocks hard or soft, let us look at the meaning of its name. Igneous refers to anything that is produced in conditions under extreme heat. Igneous rocks are produced under intense heat conditions, such as during a volcanic eruption. Igneous rocks can be made from either lava or magma. They are classified according to their mineral content and the texture of their crystals. For example, granite is an igneous rock composed of quartz, feldspar, and mica. (See What is Carbonation Weathering?)
6. Where can Igneous Rocks form?
Igneous rocks form when hot molten rock (magma) or ash cools and solidifies. Most of Earth’s igneous rocks formed during volcanic eruptions or plutonic activity (intrusion of magma into the crust).
Igneous rocks can be found worldwide, but they are most commonly found in areas with active volcanic activity or where there are hot spots. Hot spots are areas where mantle plumes rise up to the surface and can cause volcanoes to form. Some examples of places where you might find igneous rocks include Hawaii, Iceland, and the Andes Mountains. (See What are the Characteristics of a Rock?)
7. Where are Igneous Rocks found in Everyday Life?
Igneous rocks are found in many places in the world, including on the surface and underground. They can be found in mountain ranges, along coastlines, and under the sea. The most common igneous rock is granite, which is used in many buildings, statues, and monuments. Granite is found in most mountain ranges. Other igneous rocks include basalt, pumice, and obsidian. Must see Which is the Strongest Rock in the World?
8. What are the Uses of Igneous Rocks?
Igneous rocks have many uses. The most common uses of igneous rocks are:
- Construction material: Granite and other igneous rocks are often used in construction because they are solid and durable.
- Countertops: A lot of kitchen countertops are made from granite or other types of igneous rock.
- Landscaping stone: Igneous rocks are often used in landscaping to create pathways, steps, and other features.
- Mining: Igneous rocks are sometimes mined for their valuable minerals.
9. How Igneous Rocks are useful to Humans?
Igneous rocks are used for construction, as aggregates in concrete and asphalt, as dimension stones, and as crushed stones. Igneous rocks have also been used to produce ceramics and brick. Pumice, an igneous rock, is used for scouring agents, abrasives, and fillers. Granite countertops are a popular example of the use of igneous rocks in home construction. (See What is the Most Expensive Rock in the World?)
10. What is the Most Important Igneous Rock?
You are now aware of what are the uses of igneous rocks, however, which rock among them is the most important? Granite is the most important igneous rock because it is one of the most common rocks on Earth. About 15% of the Earth’s surface comprises igneous, metamorphic, and sedimentary rocks. Granite and other rocks of the granite family make up about half of that.
11. Why is Igneous Rock called Mother Rock?Photo by Tomas Martinez on Unsplash
Igneous rock is often called a mother rock because all other rocks are in turn formed from them. They are sometimes called primary rocks.
The uses of igneous rocks in the natural world and human-made structures are immense. The rocks are strong and durable, making them perfect for use in construction projects. They can be used to create beautiful landscapes and gardens. With their striking colors and textures, igneous rocks can add an element of sophistication to any setting. Hope you got the answer to where are igneous rocks found in everyday life! (See Which country has the most mountain belts?)