5h 26min, jun 20, 1953 y - Discovery of Mid-Atlantic
Description:
American geologist Marie Tharp studies sounding profiles from the Atlantic Ocean and discovers a rift valley. Later studies reveal it to be a continuous rift valley extending over 40,000 nautical miles along the ocean floor. This is important because it provides evidence for the newly formed theory of continental drift, known today as plate tectonics
Added to timeline:
Marine
Date:
Images:
![]()
