plate tectonics

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plate tectonics

the study of the movement of the large crustal plates that form the surface of the earth on the continental land masses and beneath the seas. see CONTINENTAL DRIFT.
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"These hypotheses are going to take a lot of testing," comments Zuber, who plans to look for signs of plate tectonic activity in gravity maps compiled from Surveyor data.
In the past, plate tectonic recycling must have operated faster (e.g., Burke et al., 1976; Hargraves, 1986) to keep pace with significantly higher heat production and a still significantly higher primordial heat budget retained from the era of accretion and internal differentiation (e.g., Richter, 1988; Pollack, 1997; Davies, 1999).
"There has always been some uncertainty as to whether the plate tectonic paradigm would explain what is going on.
The plateau and mountains to the north reveal an apparent flaw in the elegant theory of plate tectonics, which holds that Earth's thin outer shell, or lithosphere, consists of a broken, shifting patchwork of large segments.
The large earthquake that struck off the west coast of Japan's Hokkaido Island last week is helping earth scientists piece together the complex plate tectonic puzzle in this part of the world.
Over the same period, the Earth has gained more continental land through volcanic eruptions and plate tectonic collisions.
While the plate tectonic forces push on the entire eastern United States, New Madrid compresses more than others because the lower part of the plate can't support the force, Zoback says.
relating the extreme age and stability of a large part of the Australian continent to its plate tectonic history.
"Our technique shows that the geological activity that formed the West African continent was due to plate tectonic movement of ocean crust sinking into the mantle," Smit added.
In the early days of plate tectonic theory, scientists went looking for anisotropy to provide evidence that plate spreading in the ocean was actually happening.
Foreland fold-and-thrust belts throughout the world are conspicuous features of the convergent plate tectonic habitat.