1.(Geological Science) a series of processes in which new oceanic lithosphere is created at oceanic ridges, spreads away from the ridges, and returns to the earth's interior along subduction zones. Also called:ocean floor spreading Collins English Dictionary – Complete and Unabridged, 12th Edition...
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.
Related to Seafloor spreading ridge: Seafloor Spreading Theorymid-o·cean ridge (mĭd′ō′shən) n. 1. Any of various underwater mountain ranges forming a chain that extends almost continuously for about 66,000 kilometers (41,000 miles) through the North and South Atlantic Oceans, the ...
The meaning of SEAFLOOR is the floor of a sea or ocean : seabed. How to use seafloor in a sentence.
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
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
The Great Global Rift, running along the Mid Atlantic Ridge, was discovered by Maurice Ewing and Bruce Heezen in 1953 while the mountain range under the Arctic was found in 1954 by the Arctic Institute of the USSR. The theory of seafloor spreading was developed in 1960 by Harry Hammond Hess...
The seafloor high-definition camera (CamHD) installed on the Ocean Observatories Initiative (OOI) Cabled Array (CA) provides real-time video of the Mushroom vent at the ASHES hydrothermal field in the Axial Volcano caldera on the Juan de Fuca spreading zone (Figure 1). CamHD performs a pre...
Seafloor Spreading Lesson Plan Causes of Tectonic Plate Movement Lesson Plan Continental Collision | Definition & Examples Tectonic Plate Movement | Types, Causes & Effects Volcanic Island Arc | Definition, Formation & Examples Rift Valleys: Formation, Diagrams, and ExamplesCreate...
Seafloor spreading helps explain continental drift in the theory of plate tectonics...- Cortical spreading depression (CSD) or spreading depolarization (SD) is a wave of electrophysiological hyperactivity followed by a wave of inhibition...- A spreading ground is a water conservation facility that ...