Outrageously Funny Word Dictionary :: Undercrust

👉 The term "undercrust" refers to a type of crust that is located between two parent crusts, such as between the Earth's outer core and mantle. This crust is often referred to as the "mantle crust" because it is less dense than the inner core or outer core. The undercrust can be either solid or partly liquid due to variations in density and temperature within the Earth's crust. Undercrusts are important for understanding the composition of the Earth's interior,

undercrust