What are the igneous , metamorphic and sedimentary rocks Give an example of each of them
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Answer:
Igneous rocks (from the Latin word for fire) form when hot, molten rock crystallizes and solidifies. The melt originates deep within the Earth near active plate boundaries or hot spots, then rises toward the surface.Examples of intrusive igneous rocks are diabase, diorite, gabbro, granite, pegmatite, and peridotite.
Sedimentary rocks are formed from pre-existing rocks or pieces of once-living organisms. They form from deposits that accumulate on the Earth's surface. Sedimentary rocks often have distinctive layering or bedding.Types of sedimentary rocks include carbonate rocks, chemically precipitated rocks, clastic rocks and coal.
Metamorphic rocks started out as some other type of rock, but have been substantially changed from their original igneous, sedimentary, or earlier metamorphic form. Common metamorphic rocks include phyllite, schist, gneiss, quartzite and marble.