Alfred Wegener courtesy of the Alfred Wegener. Almost 50 years later Harry Hess confirmed Wegeners ideas by using the evidence of seafloor spreading to explain what moved continents.
Theory And Evidence Of Seafloor Spreading Earth Eclipse
In 1968 scientists aboard the Glomar Challenger found the youngest rocks on the ocean floor to be on or near mid-ocean ridges.
Who discovered seafloor spreading. He proposed that the continental movement is a. His theory followed that magma from the mantle could ooze up at mid oceanic rides and cool thereby expanding and pushing the plates on either side of the ridge away from it. Based on material brought up from the ocean floor during a drilling project he determined that rocks on the ocean floor were younger than those on the continental landmasses.
In this hypothesis hot buoyant mantle rises up a mid-ocean ridge causing the ridge to rise upward. Also asked how did Harry Hess discover seafloor spreading. He is best known for his theories on sea floor spreading specifically work on relationships between island arcs seafloor gravity anomalies and serpentinized peridotite suggesting that the.
The seafloor spreading hypothesis was proposed by the American geophysicist Harry H. Harry Hess 1906-1969 an American geologist and professor of geology at Princeton University discovered seafloor spreading. Following this new scientific buzz Harry Hess a United States Navy officer who served in World War II and geologist introduced his own theory of seafloor spreading.
Part of his mission had been to study the deepest parts of the ocean floor. The man who discovered sea floor spreading was Harry Hess. How were rock ages evidence for seafloor spreading.
Seafloor spreading A process. Part of his mission had been to study the deepest parts of the ocean. Harry Hammond Hess a geologist and Navy submarine commander who later rose to the rank of Rear Admiral proposed the theory of seafloor spreading.
Harry Hess discovered seafloor spreading in the early 1960s. This created new seafloor which then spread away from the ridge in both directions. Harry Hammond Hess 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.
Who discovered seafloor spreading. The spreading involved magma from below the ocean floor. Basalt the once- molten rock that makes up most new oceanic crust is a fairly magnetic substance and scientists began using magnetometer s to measure the magnetism of the ocean floor in the 1950s.
Harry Hess The man who discovered seafloor spreading and proposed his hypothesis on seafloor spreading. In 1946 he had discovered that hundreds of flat-topped mountains perhaps sunken islands shape the. Hess envisaged that oceans grew from their centres with molten material basalt oozing up from the Earths mantle along the mid ocean ridges.
On the basis of Tharps efforts and other new discoveries about the deep-ocean floor Hess postulated that molten material from Earths mantle continuously wells up along the crests of the mid-ocean ridges that wind for nearly 80000 km 50000 miles through all the worlds oceans. Harry Hess was a geologist. View Notes - Seafloor spreadingTerm.
Scientists brought these observations together in the early 1960s to create the seafloor spreading hypothesis. Harry Hess was a geologist and Navy submarine commander during World War II. The US Navy discovered incontrovertible evidence of spreading of the floor of the Atlantic Ocean at the Mid Atlantic Ridge while mapping the floor of the Atlantic Ocean after WWII.
The hot magma at the ridge erupts as lava that forms new seafloor. This theory later became known as Sea Floor Spreading. Eruptions of molten material magnetic stripes in the rock of the ocean floor and the ages of the rocks themselves.
This evidence led scientists to look again at Wegeners hypothesis of continental drift. One of the Discoverers of Seafloor Spreading Part of the Earth Inside and Out Curriculum Collection. Evidence for Sea-Floor Spreading.
Several types of evidence supported Hesss theory of sea-floor spreading. The magnetism of mid-ocean ridges helped scientists first identify the process of seafloor spreading in the early 20th century.
