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.

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In a reconstruction of earth s geologic past the continents of africa and south america fit best along the.

Magnetic surveys of the ocean floor reveal.

Alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge. Magnetic surveys of the ocean floor reveal. C that reversed polarity is rare. B thin oceanic crust composed of basaltic rocks.

Plate tectonics states that. Magnetic surveys of the ocean floors reveal a alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge. Seafloor is created at mid ocean ridges and destroyed at deep ocean trenches. 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 stripes and isotopic clocks oceanographic exploration in the 1950s led to a much better understanding of the ocean floor. The concept of seafloor spreading states that. D all of the above.

Magnetic surveys of the ocean floor reveal. Alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge. Plate tectonics states that. Mapping of variation over an area is valuable in detecting structures obscured by overlying material.

Newly formed mineral grains on the ocean floor are magnetized according to the new orientation of the magnetic field. The concept of seafloor spreading states that. These patterns were unlike any seen for continental rocks.