Magnetic Reversals On The Ocean Floor

Most dry land has a modest elevation above sea level while most of the ocean floor is about 3 kilometers or 2 miles lower down.

Magnetic reversals on the ocean floor.

This indicates how strong in your memory this concept is. Plate tectonics and reversals of the earth s magnetic field are responsible for the magnetic stripes found on the ocean floor. The past record of geomagnetic reversals was first noticed by observing the magnetic stripe anomalies on the ocean floor. Magnetic reversals moving continents 16.

Where the ocean is about 1 kilometer deep is much less. It is known that leading up to a magnetic reversal the strength of the field. How magnetic reversals on the seafloor provide evidence for seafloor spreading. 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.

Morley frederick john vine and drummond hoyle matthews made. Explains how magnetic polarity frozen into seafloor basalts reveals evidence for the creation of new seafloor at mid ocean ridges. It was determined that the rock of the ocean floor had bands of embedded iron oxides that alternately pointed toward geographic north and geographic south.