Igneous rocks sedimentary rocks metamorphic rocks are made of?

Answer 1

Igneous rocks are formed by a solidified magma. There are hundreds of different minerals that those rocks may comprise. The mineralogy of igneous rocks is defined by their chemical composition and the pressures and temperatures at which they solidified.

Most igneous rocks contain mostly silicates (e.g. quartz, feldspars, mica, pyroxenes, amphiboles, olivine). Sulphides (e.g. pyrite, chalcopyrite, galenite etc.) and titanite, monazite, zircon etc. are common minor components.

Some more exotic igneous rocks known as carbonatites are largely made up of carbonate minerals that crystallized out of a carbonate magma.

Answer 2

Igneous, sedimentary, and metamorphic rocks are all formed in a process known as the Rock Cycle. The basic "theme" of the cycle is that every rock can become every other rock, including itself. With that in mind, we can go through a basic run down of how the cycle works. Start with, say, a pile of sediments. Lets say these sediments get lithified, or cemented, together to create a sedimentary rock. This sedimentary rock lives its life until eventually it encounters a great deal of heat, usually within the earth, that causes it to melt. When this rock melts it becomes magma. Once this magma resurfaces to the earth, it cools, creating an igneous rock. So so far we have sediments that became a sedimentary rock, which melted into magma and then recooled to become igneous. Now this igneous rock lives its life until it comes into contact with a large amount of heat and pressure, again, usually inside the earth. This process creates a metamorphic rock. This rock lives its life until it is slowly weathered and eroded, creating another pile of sediments. Effectively, each rock has become another rock in the cycle. But, again, keep in mind that these rocks can become themselves, meaning that an igneous rock, for example, and re-melt and re-cool to create another igneous rock.

Answer 3

All rocks are made of minerals. Igneous rocks are formed from molten and magma eg. basalt and granite, Sedimentary rocks are mechanically or organically formed eg. sandstone, limestone and shale and Metamorphic rocks are formed from igneous or sedimentary rocks altered by heat or pressure eg. slate and graphite.

Answer 4

Igneous rocks are formed from the cooling and solidification of magma or lava. Sedimentary rocks are made from the accumulation and compaction of sediment over time. Metamorphic rocks result from the alteration of pre-existing rock through heat, pressure, or chemical reactions.

Answer 5

An igneous rock is a rock that is made from heat , and the different types of igneous rocks are Obsidian , Granite , Basalt , Pumice and Gabbro.

Answer 6

igneous rocks are formed from the mantle of volcanoes

sedimentary rocks are formed from sediments (little rock fragments)

metamorphic are formed from lava and minerals

Answer 7

heat and pressure

Answer 8

The way in which they were formed.