Magnetic Reversals On The Ocean Floor

It is known that leading up to a magnetic reversal the strength of the field.

Magnetic reversals on the ocean floor.

Magnetic reversals moving continents 16. Plate tectonics and reversals of the earth s magnetic field are responsible for the magnetic stripes found on the ocean floor. Morley frederick john vine and drummond hoyle matthews made. This indicates how strong in your memory this concept is.

The area of in between depths e g. 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. 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. The past record of geomagnetic reversals was first noticed by observing the magnetic stripe anomalies on the ocean floor.

Where the ocean is about 1 kilometer deep is much less. Past field reversals can be and have been recorded in the frozen ferromagnetic or more accurately ferrimagnetic minerals of consolidated sedimentary deposits or cooled volcanic flows on land. 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.