Robert Dietz

In 1961, Robert Dietz independently coined the term 'seafloor spreading' to describe how new oceanic crust is formed at mid-ocean ridges. This concept was a crucial stepping stone in the development of the broader theory of plate tectonics.

Robert Dietz independently developed the concept of seafloor spreading around the same time as fellow scientist Harry Hess. Both researchers proposed that the oceanic crust moves away from mid-ocean ridges, though they published their findings separately.

Robert Dietz was a multifaceted American scientist who specialized in marine geology and oceanography. Later in his career, he also became a prominent proponent of the idea that meteorite impacts shaped many of Earth's geological features.

Yes, in his later years, Dietz became a leading advocate for recognizing astroblemes, or ancient meteorite impact scars, on Earth's surface. He famously identified the Sudbury Basin in Canada as an impact structure, significantly advancing impact crater geology.