👉 Delta fluid, also known as delta water or delta brine, is a type of highly concentrated brine solution found in deep subsurface environments, particularly in areas with significant hydrothermal activity. It is characterized by its extremely high salinity, often exceeding 200 times that of seawater, and contains dissolved minerals and metals. This fluid forms when seawater percolates through hot rocks in the Earth's crust, becoming enriched with minerals and salts due to interactions with the surrounding rock. As this brine rises and eventually exits through faults or fractures, it can mix with freshwater, creating a sharp salinity gradient known as a delta front. Delta fluids play a crucial role in the geochemical processes of the Earth's crust and are important for understanding hydrothermal systems, mineral deposition, and even potential geothermal energy resources.
