Plate tectonics and the ocean floor.
Explain why magnetic patterns on the ocean floor were puzzling.
All rocks were magnetic.
Why were magnetic patterns found on the ocean floor puzzling.
Farthest from the mid ocean ridge.
The magnetic variation in successive bands of ocean floor parallel with mid ocean ridges is important evidence supporting the theory of.
Also the magnetic properties that rock acquires during formation.
The magnetic patterns were a mirror image of each side of the ridge.
Explain why scientists opposed.
Closest to the mid ocean ridge.
Mapping of variation over an area is valuable in detecting structures obscured by overlying material.
You may have heard this fact before and while true there is a logical.
Among the new findings was the discovery of zebra stripe like magnetic patterns for the rocks of the ocean floor.
Why were magnetic patterns found on the ocean floor puzzling.
Magnetic stripes and isotopic clocks oceanographic exploration in the 1950s led to a much better understanding of the ocean floor.
In 1961 a magnetic survey of the eastern pacific ocean floor off the coast of oregon and california was published by two geophysicists arthur d.
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.
They did not show alternating bands of normal and reversed polarity.
The ocean floor is a mysterious place that marine geologists and oceanographers have struggled to fully grasp.
The figure below includes two images of the ocean floor.
Unlike on the continents where regional magnetic anomaly patterns that is magnetic patterns read more.
Evidence that was discovered nearly 2 decades after his death.
When the earth s magnetic field reverses a new stripe with the new polarity begins.
A history of ocean floor mapping and dating.
Evidence supporting the idea of sea floor spreading.
The oldest seafloor is located.
Bathymetry the shape of the ocean floor is largely a result of a process called plate tectonics the outer rocky layer of the earth includes about a dozen large sections called tectonic plates that are arranged like a spherical jig saw puzzle floating on top of the earth s hot flowing mantle.
Why were magnetic patterns found on the ocean floor puzzling.
Raff and ronald g.
In fact scientists have mapped more of the surface of the moon mars and venus than the surface of our ocean.