Igneous rocks: Formed from cooled and solidified magma or lava. Examples include granite, basalt, and obsidian.
Sedimentary rocks: Formed from the accumulation and cementation of sediments. Examples include sandstone, limestone, and shale.
Metamorphic rocks: Formed from existing igneous or sedimentary rocks that have been transformed by heat, pressure, or chemical reactions. Examples include marble, slate, and gneiss.
Other: In some cases, bedrock can also be composed of rock types like:
* Conglomerate: Composed of rounded gravel cemented together.
* Breccia: Composed of angular rock fragments cemented together.
* Schist: A metamorphic rock with a distinct layered structure.
Therefore, there is no single answer to what type of rock makes up bedrock. It is important to consider the specific location and geological history of the area to determine the type of bedrock present.
