the ones that are hard
Metamorphic Rocks
extrusive igneous rocks, inside the earth is intrusive igneous rocks
The most common type of rock found at the Earth's surface and in the Earth's crust are sedimentary rocks. These rocks are formed from the accumulation and lithification of sediments such as sand, mud, and organic debris. Sedimentary rocks cover about 75% of the Earth's surface.
intrusive igneous rocks
Heat and pressure inside the earth and weathering and erosion on the surface of the earth cause rocks to change from one type to another over time.
Igneous rock forms when melted rock (magma) from inside the Earth cools.
The type of rock that forms deepest inside Earth is known as igneous rock. This type of rock is created from the solidification of magma deep within the Earth's crust or mantle. Examples of igneous rocks that form deep inside the Earth include granite and basalt.
The type of rocks formed from existing rocks that have been squeezed and heated deep inside Earth's crust are called metamorphic rocks. This transformation occurs through a process known as metamorphism, which alters the mineral composition and structure of the original rocks, known as parent rocks. Common examples of metamorphic rocks include schist, gneiss, and marble.
Igneous
Sedimentary rocks, such as sandstone, shale, or conglomerate, are likely to be found in an ancient riverbed on the Earth's surface. These rocks are formed from the accumulation and compaction of sediments carried by rivers over time.
Igneous rocks are formed after solidification of lava (Magma inside earth). They are rich in metals as metals are found deep in earth and hence they come out in molten state with the lava.
igneous rocks