Newly formed mineral grains on the ocean floor are magnetized according to the new orientation of the magnetic field.
Magnetic surveys of the ocean floors reveal.
Plate tectonics states that.
The concept of seafloor spreading states that.
The magnetic variation in successive bands of ocean floor parallel with mid ocean ridges is important evidence supporting the theory of.
Magnetic surveys of the ocean floor reveal.
Alternating stripes of normal and reversed polarity paralleling the mid ocean ridge.
D all of the above.
A seismic survey may make use of both shipboad measurements and measurements from an array of ocean bottom seismometers.
Magnetic surveys of the ocean floor reveal.
Magnetic surveys of the ocean floor reveal.
B thin oceanic crust composed of basaltic rocks.
Seafloor is created at mid ocean ridges and destroyed at deep ocean trenches.
Plate tectonics states that.
Salt domes were created when regions in the ocean repeatedly dried out.
The bathymetric map when combined with the other three maps serves as a base for making geological geophysical studies of the oceans bottom s crustal geophysical data for the continental shelf.
Variations in the intensity and polarity of earth s magnetic field are considered to be recorded in the remanent magnetism of the igneous rocks as they solidified and cooled through the curie temperature at the crest of an oceanic ridge and subsequently.
Magnetic surveys of the ocean floors reveal a alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge.
As hot mantle rises it expands.
The concept of seafloor spreading states that.
C that reversed polarity is rare.
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.
Features in the seafloor layers indicating that oil and gas might be contained in the rocks include salt domes and seeps.
Seafloor is created at mid ocean ridges and destroyed at deep ocean trenches.
It is suggested that the entire history of the ocean basins in terms of oceanfloor spreading is contained frozen in the oceanic crust.
Magnetic surveys of the ocean floors reveal.
Why is it so important to survey the ocean floors.
Alternating stripes of normal and reversed polarity paralleling the mid atlantic ridge.
Magnetic surveys of the ocean floors reveal alternating strips of normal and reversed polarity paralleling the mid atlantic ridge divergent boundaries are areas of.
To know topography and possible hiding places for submarines.
As it expands it cools.
In a reconstruction of earth s geologic past the continents of africa and south america fit best along the.
