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Oct 1, 2024 · plate tectonics, theory dealing with the dynamics of Earth’s outer shell—the lithosphere—that revolutionized Earth sciences by providing a uniform context for understanding mountain-building processes, volcanoes, and earthquakes as well as the evolution of Earth’s surface and reconstructing its past continents and oceans.
plate tectonics, Theory that the Earth’s lithosphere (the crust and upper portion of the mantle) is divided into about 12 large plates and several small ones that float on and travel independently over the asthenosphere.
Oct 1, 2024 · Plate tectonics - Development, Theory, Earth: The outlines of the continents flanking the Atlantic Ocean are so similar that their correspondence was apparent as soon as accurate maps became available.
Oct 1, 2024 · Uncover Alfred Wegener's theory of continental drift through biological and geological evidence and the theory of plate tectonics A discussion of some of the evidence supporting continental drift on Earth.
Earth sciences - Plate Tectonics, Geology, Geophysics: Plate tectonics has revolutionized virtually every discipline of the Earth sciences since the late 1960s and early 1970s. It has served as a unifying model or paradigm for explaining geologic phenomena that were formerly considered in unrelated fashion.
Oct 1, 2024 · Plate tectonics - Continental Drift, Subduction, Earthquakes: After marine magnetic anomalies were explained, the cumulative evidence caused the concept of seafloor spreading to be widely accepted. However, the process responsible for continental drift remained enigmatic.
Oct 1, 2024 · plate movement Theoretical diagram showing the effects of an advancing tectonic plate on other adjacent, but stationary, tectonic plates. At the advancing edge of plate A, the overlap with plate B creates a convergent boundary.
Oct 1, 2024 · Plate tectonics - Continental Drift, Subduction, Earthquakes: The strikingly similar Paleozoic sedimentary sequences on all southern continents and also in India are an example of evidence that supports continental drift.
Oct 24, 2024 · Continental drift, large-scale horizontal movement of continents relative to one another and to the ocean basins during one or more episodes of geologic time. This concept was an important precursor to the development of the theory of plate tectonics, which incorporates it.
Oct 1, 2024 · Plate tectonics - Hess's Model, Seafloor Spreading, Continental Drift: The existence of these three types of large, striking seafloor features demanded a global rather than local tectonic explanation.
