Magnetic Anomaly Stripes On Ocean Floors

Mapping of variation over an area is valuable in detecting structures obscured by overlying material.

Magnetic anomaly stripes on ocean floors.

Marine magnetic anomalies typically represent 1 percent of the total geomagnetic field strength. These two things were the magnetic striping on the ocean floor and the age of seafloor rocks. Magnetic striping magnetic minerals are found in rocks. In geophysics a magnetic anomaly is a local variation in the earth s magnetic field resulting from variations in the chemistry or magnetism of the rocks.

Plate tectonics and reversals of the earth s magnetic field are responsible for the magnetic stripes found on the ocean floor. Among the new findings was the discovery of zebra stripe like magnetic patterns for the rocks of the ocean floor. The magnetic variation in successive bands of ocean floor parallel with mid ocean ridges is important evidence supporting the theory of. Magnetic striping of the sea floor after mid ocean ridges and trenches were discovered more evidence was discovered that helped to support the theory that the continents had moved around.

Over time the earth s magnetic field reverses its north. They can be stronger positive or weaker negative than the average total read more. Magnetic stripes and isotopic clocks oceanographic exploration in the 1950s led to a much better understanding of the ocean floor. A marine magnetic anomaly is a variation in strength of earth s magnetic field caused by magnetism in rocks of the ocean floor.

When magma flows out of a mid ocean ridge small magnetic minerals in the magma align themselves to point in the direction of the earth s current magnetic north.