Magnetic Surveys Of The Ocean Floor Reveal

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.

Magnetic surveys of the ocean floor reveal.

Seafloor is created at mid ocean ridges and destroyed at deep ocean trenches. In a reconstruction of earth s geologic past the continents of africa and south america fit best along the. D all of the above. Magnetic surveys of the ocean floor reveal.

Newly formed mineral grains on the ocean floor are magnetized according to the new orientation of the magnetic field. B thin oceanic crust composed of basaltic rocks. Alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge. Magnetic stripes and isotopic clocks oceanographic exploration in the 1950s led to a much better understanding of the ocean floor.

Among the new findings was the discovery of zebra stripe like magnetic patterns for the rocks of the ocean floor. Plate tectonics states that. Alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge. These patterns were unlike any seen for continental rocks.

C that reversed polarity is rare. Magnetic surveys of the ocean floor reveal. Mapping of variation over an area is valuable in detecting structures obscured by overlying material. Seafloor is created at mid ocean ridges and destroyed at deep ocean trenches.

Magnetic surveys of the ocean floors reveal a alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge. Magnetic surveys of the ocean floor reveal. Plate tectonics states that.