Plate tectonics (from the Late Latin tectonicus, from the Greek: τεκτονικός "pertaining to building") is a scientific theory describing the large-scale motion of seven large plates and the movements of a larger number of smaller plates of the Earth's lithosphere, since tectonic processes began on Earth between 3 and 3.5 billion years ago.The model builds on the concept of continental...
All About Plate Tectonics: Earth's Plates and Continental Drift The Earth's rocky outer crust solidified billions of years ago, soon after the Earth formed. This crust is not a solid shell; it is broken up into huge, thick plates that drift atop the soft, underlying mantle.
This is a list of tectonic plates on the Earth's surface.Tectonic plates are pieces of Earth's crust and uppermost mantle, together referred to as the lithosphere.The plates are around 100 km (62 mi) thick and consist of two principal types of material: oceanic crust (also called sima from silicon and magnesium) and continental crust (sial from silicon and aluminium).
From the deepest ocean trench to the tallest mountain, plate tectonics explains the features and movement of Earth's surface in the present and the past. Plate tectonics is the theory that Earth's ...
Plate tectonics: Plate tectonics, theory dealing with the dynamics of Earth’s outer shell 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.
The theory of plate tectonics is an important geologic concept as it fills in the gaps to Earth's geologic history—It is not an exaggeration to paraphrase the biologist Theodosius Dobzhansky and say that 'nothing in geology makes sense except in the light of plate tectonics.' The story of plate tectonics starts deep within the Earth.
Plate tectonics is the scientific theory that attempts to explain the movements of the Earth's lithosphere that have formed the landscape features we see across the globe today. By definition, the word "plate" in geologic terms means a large slab of solid rock.
The southern edge of the Caribbean Plate, passing through northern South America, is an example. Another is the boundary between the North American Plate and the Eurasian Plate. More Plate Tectonics Maps. Here are two plate tectonics maps which show more detail than the maps above.
Plate tectonics is the study of the lithosphere, the outer portion of the Earth consisting of the crust and part of the upper mantle. The lithosphere is divided into about a dozen large plates which move and interact with one another to create earthquakes, mountain ranges, volcanic activity, ocean ...
Plate Tectonics. The Earth's plates jostle about in fits and starts that are punctuated with earthquakes and volcanic eruptions. ... In addition, the diving plate melts and is often spewed out in ...