The meaning of SEAFLOOR SPREADING is the divergence at mid-ocean ridges of the tectonic plates underlying the oceans that is due to upwelling from the earth's interior of magma which solidifies and adds to the spreading plates.
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Learn what seafloor spreading is, who discovered it, and how it explains the movement of continents and plates. Learn about the evidence for...
magma rises from the mantle, solidifies, and creates new oceanic crust, gradually building the ridge.These ridges are found in every ocean and are key features of seafloor spreading, with the Mid-Atlantic Ridge and the East Pacific Rise ...
During seafloor spreading, the tectonic plates pull away from each other. Through subduction, two tectonic plates collide, forcing the heavier plate to slide over the lighter plate. What is an example of an ocean basin? The Atlantic Ocean is one of five ocean basins in the world. It formed...
Supercontinent, large landmass that accounts for the vast majority of Earth’s land. Some researchers argue that the threshold for a landmass to be considered a supercontinent is approximately 75 percent of Earth’s continental crust, whereas others note
Pangea, supercontinent that incorporated almost all of Earth’s landmasses in early geologic time. Fully assembled by the Early Permian Epoch (some 299 million to about 273 million years ago), it began to break apart about 200 million years ago, eventual
Chinese English Pinyin Dictionary Search with English, Pinyin, or Chinese characters. Powered byCC-CEDICT 海底扩张说Trad.海底擴張說 hǎi dǐ kuò zhāng shuō theory of seafloor spreading (geology)
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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, wh