Differences of Types of Rocks Rocks are found everywhere in the Earth surface or beneath land surface. There are three types of rocks the sedimentary, metamorphic, and igneous rocks. These rocks undergo rock cycle. During weathering and erosion these rocks on the earth surface are constantly being broken down and by wind and water. Sedimentary rocks are formed sediment that is deposited over time, usually as layers at the bottom of lakes and oceans these sediments are the minerals, small pieces of plant and other organic matter, pre-existing rocks or pieces of remains of living organism that accumulate in Earth Surface. These sediments are compressed over a long period of time before they combine into solid layers of rocks. Sedimentary rocks cover most of the rocky Earth surface and less amount of the Earth’s crust. When these rocks are exposed to extreme heat caused by magma or by the intense collisions and friction of tectonic plates which lead to changes in their mineralogy and texture of the rock the Metamorphic rock is formed. Those rocks that are found beneath the Earth surface melts and become magma when a volcano erupts, magma flows out of it. (When magma is on the earth’s surface, it is called lava.) As the lava cools it hardens and becomes igneous rock. As soon as new igneous rock is formed, the processes of weathering and erosion begin, starting the whole cycle over again! Sedimentary structures include features like bedding, ripple marks, fossil tracks and trails, and mud cracks. Sandstone, rock salt and limestone are sedimentary rocks. Metamorphic textures are salty, schistose, gneissose, granoblastic and Horn felsic. Anthracite and Marble are metamorphic rocks. Igneous rocks usually hence no layering made up of two or more minerals and they are either glassy or coarse in appearance. Basalt, granite, pumice, obsidian are examples of igneous rocks. Differences of Types of Rocks Rocks are found everywhere in the Earth surface or beneath land surface. There are three types of rocks the sedimentary, metamorphic, and igneous rocks. These rocks undergo rock cycle. During weathering and erosion these rocks on the earth surface are constantly being broken down and by wind and water. Sedimentary rocks are formed sediment that is deposited over time, usually as layers at the bottom of lakes and oceans these sediments are the minerals, small pieces of plant and other organic matter, pre-existing rocks or pieces of remains of living organism that accumulate in Earth Surface. These sediments are compressed over a long period of time before they combine into solid layers of rocks. Sedimentary rocks cover most of the rocky Earth surface and less amount of the Earth’s crust. When these rocks are exposed to extreme heat caused by magma or by the intense collisions and friction of tectonic plates which lead to changes in their mineralogy and texture of the rock the Metamorphic rock is formed. Those rocks that are found beneath the Earth surface

1. Differences of Types of Rocks
Rocks are found everywhere in the Earth surface or beneath land surface.
There are three types of rocks the sedimentary, metamorphic, and igneous rocks.
These rocks undergo rock cycle. During weathering and erosion these rocks on the
earth surface are constantly being broken down and by wind and water.
Sedimentary rocks are formed sediment that is deposited over time, usually
as layers at the bottom of lakes and oceans these sediments are the minerals, small
pieces of plant and other organic matter, pre-existing rocks or pieces of remains of
living organism that accumulate in Earth Surface. These sediments are compressed
over a long period of time before they combine into solid layers of rocks.
Sedimentary rocks cover most of the rocky Earth surface and less amount of the
Earth’s crust. When these rocks are exposed to extreme heat caused by magma or by
the intense collisions and friction of tectonic plates which lead to changes in their
mineralogy and texture of the rock the Metamorphic rock is formed. Those rocks
that are found beneath the Earth surface melts and become magma when a volcano
erupts, magma flows out of it. (When magma is on the earth’s surface, it is called
lava.) As the lava cools it hardens and becomes igneous rock. As soon as new
igneous rock is formed, the processes of weathering and erosion begin, starting the
whole cycle over again! Sedimentary structures include features like bedding, ripple
marks, fossil tracks and trails, and mud cracks. Sandstone, rock salt and limestone
are sedimentary rocks.
Metamorphic textures are salty, schistose, gneissose, granoblastic and Horn
felsic. Anthracite and Marble are metamorphic rocks.
Igneous rocks usually hence no layering made up oftwo or more minerals and
they are either glassy or coarsein appearance. Basalt, granite, pumice, obsidian are
examples of igneous rocks