The examples of stratified rocks are sandstones, limestones, slate etc. These rocks are crystalline granular or compact granular. Unstratified rocks are most of igneous rocks of volcanic activity and sedimentary rocks affected by movement of the earth. The examples of unstratified rocks are granite, marble, trap etc.

Unstratified Rock

Unstratified rock, also known as massive rock, is a geological formation that lacks any discernible layering or stratification. It is a solid, uniform mass of rock that has no visible layers or bands. These types of rocks are typically formed from molten magma or lava, which solidified and cooled rapidly, preventing any layering or stratification from occurring.

Examples of Unstratified Rocks

Out of the given options, the rock that can be termed as an unstratified rock is marble.

- Sandstone: Sandstone is a sedimentary rock that is composed of sand-sized grains of mineral, rock, or organic material. It is formed from the accumulation and cementation of sand over time. Sandstone typically exhibits layering or stratification due to its sedimentary origins.
- Limestone: Limestone is a sedimentary rock that is primarily composed of calcium carbonate. It is formed from the accumulation and compaction of marine or freshwater shells, coral, and other organic materials. Limestone often exhibits layering or stratification due to its sedimentary origins.
- Marble: Marble is a metamorphic rock that is formed from the recrystallization of limestone or dolomite. It is typically composed of interlocking crystals of calcite or dolomite and lacks any visible layering or stratification.
- Slate: Slate is a metamorphic rock that is formed from the recrystallization of shale or mudstone. It typically exhibits foliation, which is a type of layering or stratification that is characteristic of metamorphic rocks.

Conclusion

In conclusion, unstratified rocks lack any visible layering or stratification and are typically formed from molten magma or lava. Marble is an example of an unstratified rock, while sandstone, limestone, and slate are examples of stratified rocks.

Stratified- sedimentary rocks. unstratified-igneous rocks. marble is a metamorphic rock so it cant be none of the above