Igneous, sedimentary, and metamorphic
sedimentary
There are three main groups: Igneous, Sedimentary, and Metamorphic.
Rocks are labeled by 3 groups. Igneous, Metamorphic, and Sedimentary.
Metamorphic rocks are classified into two main groups: foliated and non-foliated. Foliated rocks have a layered or banded appearance due to the alignment of mineral grains during metamorphism, while non-foliated rocks lack this layered structure and typically consist of interlocking crystals.
The three main groups of igneous rocks are intrusive (plutonic), extrusive (volcanic), and hypabyssal rocks. Intrusive rocks form below the Earth's surface from the slow cooling of magma. Extrusive rocks form on the Earth's surface from rapidly cooling lava. Hypabyssal rocks are intermediate rocks that form from magma that solidifies in the crust.
Igneous, Greek for 'from fire', metamorphic, and sedimentary.
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The two main types of sedimentary rocks are clastic (detrital) rocks, which are made of pre-existing rock fragments cemented together, and chemical rocks, which form from minerals that precipitate out of solution.
There are 3 main kinds of rocks. These 3 types of rocks are Igneous, Metamorphic and Sedimentary and pictures can be found in books at your local library.
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Rocks are classified into two main groups based on how they are formed: igneous rocks, which are formed from cooling and solidifying magma or lava, and sedimentary rocks, which are formed from the accumulation and compression of sediments.
The 3 main groups of seedless vascular plants are: ferns, horsetails and club mosses.