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. Alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge. Newly formed mineral grains on the ocean floor are magnetized according to the new orientation of the magnetic field.

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Itext Chapter 1 Section 4

Plate tectonics states that.

Magnetic surveys of the ocean floor reveal.

Magnetic surveys of the ocean floor reveal. The concept of seafloor spreading states that. Plate tectonics states that. D all of the above.

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. Alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge. Magnetic surveys of the ocean floors reveal a alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge.

C that reversed polarity is rare. Magnetic surveys of the ocean floor reveal. In a reconstruction of earth s geologic past the continents of africa and south america fit best along the. B thin oceanic crust composed of basaltic rocks.

The concept of seafloor spreading states that. These patterns were unlike any seen for continental rocks. Magnetic stripes and isotopic clocks oceanographic exploration in the 1950s led to a much better understanding 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.

Seafloor is created at mid ocean ridges and destroyed at deep ocean trenches. Magnetic surveys of the ocean floor reveal. Among the new findings was the discovery of zebra stripe like magnetic patterns for the rocks of the ocean floor.

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