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en.wikipedia.org/wiki/Formation_of_rocks

This article discusses how rocks are formed. There are also articles on physical rock formations, rock layerings (strata), and the formal naming of geologic formations. The three main ways rocks are formed: ... As it moves, it cools and various rock types will form through a process known as fractional crystallization. Igneous ...

www.learner.org/interactives/rockcycle/types.html

The three main types, or classes, of rock are sedimentary, metamorphic, and igneous and ... Together, all these particles are called sediment. ... Igneous rocks are formed when magma (molten rock deep within the earth) cools and hardens.

jersey.uoregon.edu/~mstrick/AskGeoMan/geoQuerry13.html

What are the 3 basic types of rocks? ... being, all rocks can be put into one of three fundamentally different types of rocks. ... The earth is made of igneous rock - at least at the surface where our planet is exposed to the coldness of space.

www.dummies.com/education/science/the-three-categories-of-rocks-and-the-rock-cycle

Geologists classify the rocks of earth's crust in one of three categories — igneous, metamorphic, or sedimentary — based on how the rock was created. Each type of rock has its own unique characteristics: Igneous: Igneous rocks form from the ...

www.ask.com/youtube?q=How+Are+Each+of+the+Three+Rock+Types+Formed%3F&v=17l2LrjZi9o
Aug 10, 2015 ... You will learn about "3 Types of Rocks" in this video. Rocks can be broadly divided into three types on the bases of their formation, namely igneous rocks, s... ... 3 Types of Rocks. Smart Learning for All. Loading... Unsubscribe ...

sciencing.com/types-rock-formations-5462459.html

Apr 24, 2017 ... 3 Types of Rock Formations ... Enthusiasts may climb rock formations without a thought about where ... Geologists, however, know intimately that there are different kinds of rocks, each ... Igneous is one type of rock formation.

www.zmescience.com/other/science-abc/types-of-rock

Jun 27, 2017 ... The three main types of geological rocks are described. ... Not all magma is made equal though – different magmas can have different chemical ...

www.ck12.org/earth-science/rock-cycle-processes/lesson/Rocks-and-Processes-of-the-Rock-Cycle-HS-ES

Feb 24, 2012 ... Presents the three major rock types and the rock cycle. ... Rocks change as a result of natural processes that are taking place all the time. ... sediments can be formed from the weathering and erosion of preexisting rocks.

www.ck12.org/book/CK-12-Earth-Science-Concepts-For-High-School/section/3.8

Presents the three major rock types and the rock cycle. ... Rocks change as a result of natural processes that are taking place all the time. Most changes ... Those sediments can be formed from the weathering and erosion of preexisting rocks.