metamórmica

Metamórfica is a Spanish term that translates to "metamorphic" in English, commonly used in geological contexts. It refers to rocks that have undergone transformation from an earlier form, known as protolith, through a process of heat, pressure, or chemical reactions. This transformation occurs in a solid state without melting. The protolith can be igneous, sedimentary, or even another metamorphic rock.

The geological processes that cause metamorphism are typically found deep within the Earth's crust or where tectonic plates collide. Intense heat can be generated by proximity to magma chambers or through friction along fault lines. Pressure can arise from the weight of overlying rocks or from the immense forces associated with tectonic plate movement. The introduction of chemically active fluids can also alter the mineral composition of the rock.

These changes result in new minerals forming, existing minerals recrystallizing into larger grains, or a change in the rock's texture and structure. Common examples of metamorphic rocks include marble, formed from limestone; slate, formed from shale; and gneiss, which often originates from granite. The study of metamorphic rocks is crucial for understanding Earth's history, tectonic activity, and the composition of the planet's interior. The term metamórfica therefore encapsulates the essence of these transformed geological materials.