Magnetic Surveys Of The Ocean Floor Reveal
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Magnetic surveys of the ocean floor reveal.
Magnetic surveys of the ocean floor reveal. Alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge. B thin oceanic crust composed of basaltic rocks. Seafloor is created at mid ocean ridges and destroyed at deep ocean trenches. The concept of seafloor spreading states that.
Magnetic surveys of the ocean floors reveal a 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. Plate tectonics states that. 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. These patterns were unlike any seen for continental rocks. 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.
In a reconstruction of earth s geologic past the continents of africa and south america fit best along the. The concept of seafloor spreading states that. C that reversed polarity is rare. D all of the above.
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. Seafloor is created at mid ocean ridges and destroyed at deep ocean trenches.
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