Tag Archives: Geological Discovery

The main image illustrates a cross-section of earthquake seismic waves traveling through the Earth's interior, highlighting the ways these waves refract (bend) at the boundaries between the mantle, outer core, and inner core. Inset: A 1932 photograph of Danish geophysicist Inge Lehmann.
1936: Inge Lehmann’s Discovery of the Earth’s Inner Core

Inge Lehmann's analysis of seismic data revealed the Earth's core to be divided into a liquid outer and a solid inner core, reshaping geological understanding