Where is the wiechert -gutenburg discontinuited located?

The Wiechert-Gutenberg Discontinuity is located within the Earth's mantle, specifically at a depth of approximately 400 to 700 kilometers (about 250 to 430 miles) beneath the Earth's surface. It marks the boundary between the upper mantle and the lower mantle, characterized by a change in seismic wave speeds and material properties. This discontinuity is named after the seismologists Emil Wiechert and Beno Gutenberg, who contributed to our understanding of the Earth's internal structure.