👉 Hydromedusan is a type of sedimentary rock that forms under high pressure and temperature conditions. It is characterized by its smooth, compact texture and irregular shape. These rocks are often found in areas with strong hydrostatic forces such as rivers, lakes, and oceans. The term "hydromedusan" refers to the process by which water moves through a sedimentary rock over time, leading to changes in the rock's structure and composition. This process is known as lithospheric
