Search results
Results from the WOW.Com Content Network
The Mid-Atlantic Ridge is a mid-ocean ridge (a divergent or constructive plate boundary) located along the floor of the Atlantic Ocean, and part of the longest mountain range in the world. In the North Atlantic, the ridge separates the North American from the Eurasian Plate and the African Plate, north and south of the Azores Triple Junction.
Marie Tharp. Marie Tharp (July 30, 1920 – August 23, 2006) was an American geologist and oceanographic cartographer. In the 1950s, she collaborated with geologist Bruce Heezen to produce the first scientific map of the Atlantic Ocean floor. [ 1 ] Her cartography revealed a more detailed topography and multi-dimensional geographical landscape ...
Max. elevation. −750 metres (−2,460 ft) Min. elevation. −900 metres (−3,000 ft) The Lost City Hydrothermal Field, often referred to simply as Lost City, is an area of marine alkaline hydrothermal vents located on the Atlantis Massif at the intersection between the Mid-Atlantic Ridge and the Atlantis Transform Fault, in the Atlantic Ocean.
Opening of Central and North Atlantic from 170 Ma to the present. The opening of the North Atlantic Ocean is a geological event that has occurred over millions of years, during which the supercontinent Pangea broke up. As modern-day Europe (Eurasian Plate) and North America (North American Plate) separated during the final breakup of Pangea in ...
Mid-ocean ridge cross-section (cut-away view) A mid-ocean ridge (MOR) is a seafloor mountain system formed by plate tectonics. It typically has a depth of about 2,600 meters (8,500 ft) and rises about 2,000 meters (6,600 ft) above the deepest portion of an ocean basin. This feature is where seafloor spreading takes place along a divergent plate ...
The Mid-Atlantic Ridge was also served as the birthplace for the discovery of seafloor spreading. [33] As volcanic activity produces new oceanic crust along the ridge, the two plates diverge from each other pulling up the new ocean floor from below the crust.
Ballard was geologist diver in Alvin during Project FAMOUS, which explored the median rift valley of the Mid-Atlantic Ridge in 1974. [8] During the summer of 1975, Ballard participated in a joint French-American expedition called Phere searching for hydrothermal vents over the Mid-Atlantic Ridge, but the expedition did not find any active vents.
Harry Hammond Hess. Harry Hammond Hess (May 24, 1906 – August 25, 1969) was an American geologist and a United States Navy officer in World War II who is considered one of the "founding fathers" of the unifying theory of plate tectonics. He published theories on sea floor spreading, specifically on relationships between island arcs, seafloor ...