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Foliated--those exhibiting layering (gneiss, slate, schists), and non-foliated--without layers (marble, quartzite).

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What are the three main categories into which geologists classify rocks?

The three main categories into which geologists classify rocks are igneous, sedimentary, and metamorphic. Igneous rocks form from the cooling and solidification of magma or lava. Sedimentary rocks are formed from the accumulation and lithification of sediments. Metamorphic rocks are created from the alteration of pre-existing rocks due to high temperature and pressure.


What are the three categories that rocks are classified in?

Igneous, metamorphic and sedimentary are the three rock types.


What are the two metamorphic rocks?

they are a minarl.


What do scientists classify rocks into what one of the three main categories by?

Scientists classify rocks into three main categories - sedimentary, igneous, and metamorphic - based on how they are formed. Sedimentary rocks are formed from the accumulation and solidification of sediments, igneous rocks are formed from the cooling and solidification of magma or lava, and metamorphic rocks are formed from the alteration of existing rocks through heat and pressure.


What are two types of organic rocks?

sedimentary and metamorphic rocks


3 main categories of rocks?

The three main categories of rocks are igneous rocks, which form from solidified magma or lava; sedimentary rocks, which are formed from the accumulation and cementation of sediments; and metamorphic rocks, which result from the transformation of existing rocks under high heat and pressure.


What sound does two metamorphic rocks make when they hit together?

Listen to: Tangerine Dream - Thru Metamorphic Rocks


What are two examples of Metomorphic rocks?

Slate and marble are examples of metamorphic rocks. Other metamorphic rocks include gneiss, schist, and quartzite. All metamorphic rocks are formed from other rock types.


Is a sedimentary rock an igneous rock?

No. Igneous, sedimentary, and metamorphic rocks are three different categories of rock.


What are the two types metamorphic rock?

The two groups of metamorphic rock are foliated and nonfoliated. Metamorphic rocks can also be classified as contact and regional.


Is a metamorphic rock banded and nonbanded?

Those are two types of metamorphic rocks. Banded metamorphic rocks are when rocks layer into layers and they look like strips or Bands. Non banded is the opposite of banded


How many metamorphic rock are there?

There are three main categories of metamorphic rocks: foliated, non-foliated, and contact metamorphic rocks. The specific types of metamorphic rocks within each category can vary, but the main classification is typically based on the presence or absence of foliation.