The theory builds on the concepts of continental drift, developed during the first decades of the 20th century, and accepted by the majority of the geoscientific community when the concepts of seafloor spreading were developed in the late 1950s and early 1960s.
The theory builds on the concepts of continental drift, developed during the first decades of the 20th century. The theory builds on the concepts of continental drift, accepted by the majority of the geoscientific community. The concepts of seafloor were developed in the late 1950s. The concepts of seafloor were developed in early 1960s. This seafloor was spreading.