slate
shale
Shale is a sedimentary rock, not a metamorphic rock.
i donno
Marble (metamorphosed limestone) Slate (metamorphosed shale) Gneiss (metamorphosed granite)
Slate. Slate is a low grade metamorphic rock derived from shale or mudstone.
Shale typically forms into slate, phyllite, or schist through metamorphism. Each of these metamorphic rocks forms under different temperature and pressure conditions, resulting in varying textures and mineral compositions.
Slate, granite, and shale are classified as metamorphic or igneous rocks, while pumice is classified as an igneous rock. Sedimentary rocks are formed through the deposition and solidification of sediment.
Slate is metamorphosed shale.
Sedimentary rocks such as shale, limestone, and sandstone can recrystallize to form metamorphic rocks like slate, marble, and quartzite, respectively. Igneous rocks like basalt and granite can also undergo recrystallization to form metamorphic rocks such as greenstone and gneiss.
Sandstone, limestone, and shale are examples of sedimentary rocks. Granite, basalt, and obsidian are examples of igneous rocks.
Metamorphic rocks
Slate is the metamorphic rock formed from shale. A pile of mud can turn into shale (a fine-grained sedimentary rock) with relatively low pressure, about 3 mi (5 km) down into the earth. With more pressure and some heat, shale can transform into slate. Metamorphic rock found closer to Earth's surface, or produced by low pressure, characteristically splits or flakes into layers of varying thickness. This is called foliation. Slate is often used as roofing tiles and paving stones.