Rocks are naturally found solid masses made of minerals, forming the Earth's crust. They are classified into three main types: igneous, sedimentary, and metamorphic.
Formed from the cooling and solidification of magma or lava. Grain size varies with cooling speed: slow cooling forms large grains, rapid cooling forms small grains.
Created from particles of other rocks through weathering, erosion, and sedimentation. Classified into clastic, chemical, and organic based on formation mode. Examples include sandstone and shale.
Metamorphic Rocks
Formed by the transformation of existing rocks under high temperature and pressure. Types include contact metamorphism (by magma) and regional metamorphism (by regional pressure and heat). –
Fossils are preserved remains or impressions of organisms found in sedimentary rocks. Fossil rocks form through the replacement of organic material by minerals over time.
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