Plate tectonics is a scientific theory that explains the movement and interactions of Earth's lithospheric plates. It proposes that the Earth's surface is composed of several rigid plates that are constantly moving and changing in size and shape. These plates interact at their boundaries, which can be classified into three types: convergent, divergent, and transform boundaries.
At convergent boundaries, two plates collide, resulting in the formation of mountain ranges, volcanic activity, and earthquakes. Examples include the Himalayas and the Andes.
Divergent boundaries occur when two plates move away from each other, usually resulting in the creation of new oceanic crust or a rift valley. The Mid-Atlantic Ridge is a prominent example of a divergent boundary.
Transform boundaries are characterized by two plates sliding past each other horizontally, causing intense seismic activity. The San Andreas Fault in California is a well-known transform boundary.
Plate tectonics also helps explain the distribution of features on Earth's surface, such as the location of continents, the formation of ocean basins, and the occurrence of volcanic activity and earthquakes. It is the underlying cause of major geological events, such as the formation of mountain ranges and the opening and closing of ocean basins.
The theory of plate tectonics was widely accepted in the 1960s, following a growing body of evidence, including seafloor spreading, paleomagnetism, and the discovery of a global network of interconnected plate boundaries. It revolutionized our understanding of Earth's geology and continues to be a fundamental concept in modern geosciences.
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