* Formation: Coal forms from the accumulation of plant matter, primarily in swampy environments. Over millions of years, these layers of dead plants are buried under sediment, and pressure and heat transform them into coal.
* Sedimentary Rock Characteristics: Coal exhibits characteristics typical of sedimentary rocks, including:
* Layered structure: Coal often shows distinct layers or bands, reflecting the accumulation of plant material over time.
* Fossils: Plant fossils are commonly found within coal, providing evidence of its organic origin.
* Formation from sediments: While the initial material is organic, the transformation into coal involves the accumulation of sediment and the action of pressure and heat.
Therefore, coal is categorized as a sedimentary rock due to its formation process and characteristics.
