Sedimentary igneous and metamorphic?

Question

can someone please explain to me how each one is formed and what they are.

THANK YOU

in advance xx

Answer 1

A simple way to separate these three types of rocks is as follows:

Sedimentary Rocks--

The origin of sedimentary rocks is almost always associated with a water environment. In lakes and shallow seas, sediments are deposited, buried, compressed and cemented, producing sedimentary rocks.

Igneous Rocks--

Igneous rocks form as molten material (lava/magma) cools and solidifies. If this solidification process occurs inside Earth, the magma will make intrusive igneous rocks. When volcanic action brings lava to the surface, it quickly solifdies, creating an extrusive igneous rock.

Metamorphic Rocks--

Metamorphic rocks have been changed by the process of heat and/or pressure. Regional metamorphism is associated with a large area of metamorphism (formed by the pressure and temperature of colliding plates) while contact metamorphism is when the heat of magma/lava touches rocks causing a small area to change into  a metamorphic rock.

**When heat and pressure is added to a rock, the resulting rock is metamorphic. If too much heat is added and melting occurs, upon solidification the resulting rock would be igneous.

I hope that helps clarify any confusion.

Answer 2

igneous rock is a rock formed from solidified magma either on the surface from lava or underground.

sedimentary rocks are rocks formed from sediments, such as fragments of rocks worn from the land (clastic rocks). the remains of once-living things (organic rocks) or from chemicals precipitated from water. most sedimentary rocks accumulate, layer by layer, in water, but some accumulate on land. at first, sediments are loose, but they gradually become compressed and cemented together.

metamorphic rocks are either igneous or sedimentary which have been changed by great heat, pressure or chemical reactions in the Earth's crust. for example, contact metamorphism is caused mainly by heat from pockets of magma.