Raff And Mason Sea Floor Stripes Colour
Hess of the united states in a widely circulated manuscript written in 1960 but not formally published for several years.
Raff and mason sea floor stripes colour. The oblique magnetic anomaly offsets in the juan de fuca area where magnetic stripes on the seafloor were first discovered by raff and mason had been a puzzle since before seafloor spreading was discovered. Fred vine was the first greatest of the wiggle pickers founding the marine magnetic anomaly field with his 1963 vine matthews paper. Two of his classic study areas were juan de fuca the reykjanes ridge. Fluctuations or anomalies in the intensity of the magnetic field occur at the.
The first comprehensive attempt at such an explanation was made by harry h. It is unsettling when a fact long accepted turns out not to be a fact at all. Mason and raff 1961. Of previously unrecognized seafloor spreading offshore western north america.
Other articles where magnetic anomaly is discussed. Ronald george mason winsor hampshire england 24 december 1916 london 16 july 2009 was one of the oceanographers whose pioneering cold war geomagnetic survey work lead to the discovery of magnetic striping on the seafloor. Early in 1966 james heirtzler xavier le pichon and j g baron at lamont published the results of an aeromagnetic survey over the reykjanes ridge south of. Raff and mason 1961 over what they recognized.
Seafloor magnetic polarity stripes geophysicists mapping the magnetism of the ocean floor notice a peculiar pattern of magnetic stripes in sea floor crust around mid ocean ridges. Earth s magnetic field has another important property. The paper caught the attention of two geologists working in england. First discovering magnetic stripes on the bottom of the pacific ocean off the united states west coast he later also identified them around the mid atlantic ridge.
Plate tectonics plate tectonics hess s seafloor spreading model. Sea floor spreading got off to a slow start partly because neither the vine mathews nor the mason raff papers showed obvious symmetry of linear magnetic anomalies across oceanic ridges. Like the sun s magnetic field earth s magnetic field periodically flips or reverses polarity that is the north and south poles switch places. Vine and wilson 1965 showed that the predicted magnetic symmetry existed in this area where magnetic stripes had been discovered in the mid 1950 s by ron mason and art raff mason 1958.
Normal reversed raff and mason 1961 results from a magnetic survey off the west coast of north america. In juan de fuca he recognized the axial symmetry in the raff mason data that had shown the existence of magnetic stripes on the seafloor demonstrating the seafloor spreading there. Called magnetic anomalies these features took the form of long narrow strips that ran parallel to the mid ocean ridge across the seafloor.