The theory of plate tectonics was initially accepted largely on the basis of indirect, paleomagnetic data. Eventually, however, it was confirmed through the use of GPS technology, which is able to actually measure plate motion.
Scientists have made great progress in their efforts to map the deepest parts of the ocean. But even with all the new technology that's available, our knowledge and understanding of the deep ocean is far from complete. In fact, we know more about th...
Perhaps the most striking feature that characterizes the deep ocean floor is the vast oceanic ridge system that encircles the Earth along tectonic plate boundaries.
Although it comprises more than half of Earth's surface area, the deep ocean floor was a region of near total mystery until fairly recently. Even now, efforts to map ocean basins are in their infancy.
Seamounts, guyots and island arcs form on the ocean floor as a result of a hot spot or mantle plume. While seamounts do not extend above the ocean surface, a guyot is tall enough to be eroded by wave activity and therefore has a flat top. An island ...
Whether studying earthquakes, volcanoes, or other geologic events, scientists usually focus their attention on plate boundaries and plate movement.
Most scientists believe heat and convection probably play a major role in plate tectonics. And, yet, many questions remain.
With the advent of plate tectonics, it's become apparent that episodes of extreme geologic upheaval--like earthquakes--are much more than simply random events.