High School

2. (5 points)

Limestone is one of the most common sedimentary rocks. It is a chemical sedimentary rock made up of small rocks, shells, and even fossils. Marble is a metamorphic rock formed from limestone.

Explain the processes of the rock cycle that are important in the formation of limestone and then limestone to marble. You can draw a diagram to help explain, but your final answer must be a descriptive paragraph.

Answer :

The rock cycle is a dynamic geological process that transforms rocks through various stages.

Limestone, a prevalent sedimentary rock, originates from the accumulation and cementation of fragments, shells, and fossils. During the cycle, heat and pressure from tectonic movements act on limestone, initiating metamorphism. This transformative process leads to the creation of marble, a metamorphic rock.

The recrystallization of limestone under increased temperature and pressure results in the distinct mineral composition and texture of marble. Consequently, the rock cycle illustrates the interconnectedness of geological processes, showcasing how sedimentary rocks like limestone can undergo metamorphism to give rise to diverse rock types such as marble.