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those formed deep into the earth are called Intrusive or Plutonic rocks,those formed ator near thesurface are called Extrusive or volcanic rocks

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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.


How do geologists classify rock?

Geologists classify rocks into three groups. The first group are igneous rocks, the second are metamorphic rocks and the third are sedimentary rocks.


How do geologists classify metamorphic rock?

Geologists classify metamorphic rocks by the arrangements of the grains that make up the rocks.


Scientists classify rocks?

by carol and size


How do we classify rocks as igneous and sedimentary and metamorphic?

Igneous rocks form from the cooling and solidification of molten lava or magma. Sedimentary rocks are created from the accumulation and compaction of sediments like sand, mud, or organic material. Metamorphic rocks form when existing rocks are subjected to high temperatures and pressures, causing them to recrystallize without melting.


How do geologist classify a rock?

Geologists classify rocks by looking at their chemical and mineralogical composition then at the the size and shape of their component minerals then at any texture, pattern or grain that the rocks may display. They also classify them in relation to how they were formed.


How scientist classify rocks?

they look through a microscope


What three things are used to classify igneous rocks?

Color and texture is one way to classify igneous rocks. Another way to do this is modal classification and normative classification.


Do scientists classify rocks by their color?

yes,either felsic if light coloured or mafic if dark cloured.we classify rocks like that especially igneous rocks but COLOR IS NEVER USED TO IDENTIFY ANY ROCK.only classification.


Classify metamorphic rocks as foliated or non-foliated?

cats


Why don't we just classify rocks by their color?

That was how racism was born.


How do you classify rocks?

Geologists classify rocks by looking at their chemical and mineralogical composition then at the the size and shape of their component minerals then at any texture, pattern or grain that the rocks may display. They also classify them in relation to how they were formed.