Here's a more detailed explanation:
* Marine Sediments: These are the remains of tiny organisms, like plankton and shells, that accumulate on the ocean floor over millions of years.
* Heat and Pressure: As these sediments get buried deeper, they are subjected to increasing heat and pressure from the Earth's mantle.
* Lithification: This heat and pressure cause the sediments to undergo a process called lithification, where they are compacted and cemented together. The cementing material often comes from dissolved minerals in the surrounding water.
* Sedimentary Rock Formation: The final result of this process is the formation of sedimentary rocks like limestone (from marine shells), sandstone (from sand grains), and shale (from compacted mud).
Therefore, the heat and pressure transform the remains of marine sediments into solid, layered sedimentary rocks.
