weathering rind

A weathering rind is a layer of altered rock that forms on the surface of a rock after exposure to weathering processes. It results from chemical and physical changes caused by environmental factors such as water, air, and temperature fluctuations. This outer layer often differs in color and texture from the unweathered interior, sometimes appearing darker or more brittle. The rind indicates the degree and type of weathering a rock has undergone and can provide insights into the environmental history and stability of the rock over time.