plate tectonics

(redirected from Plate boundaries)
Also found in: Dictionary, Thesaurus, Encyclopedia.

plate tectonics

the study of the movement of the large crustal plates that form the surface of the earth on the continental land masses and beneath the seas. see CONTINENTAL DRIFT.
Mentioned in ?
References in periodicals archive ?
This convection is presented as whole mantle or whole asthenosphere cells with hot material rising under the Earth's divergent plate boundaries and cooler material sinking at the convergent boundaries with the lithosphere dragged along by the horizontal flow of the asthenosphere (Figure 1).
Tectonic plates are massive pieces of rock which lie under both continents and oceans, and volcanoes are usually found near tectonic plate boundaries. The magma from below the plates escapes through the gaps at the boundaries and causes volcanic activity.
The design of critical facilities has to be properly address, seismicity of Malaysia is closed to two the most seismically active plate boundaries, in the inter-plate boundary between the Indo-Australian and Eurasian Plates on the west and the inter-plate boundary between the Eurasian and Philippines.
Our Earth's surface, as you may know, is made up of tectonic plates that connect with each other at plate boundaries. Think of these tectonic plates as moving, giant jigsaw puzzle pieces!
Specifically, they reveal a link between seamounts and earthquakes, as seamounts are formerly active volcanoes and therefore generally are located near tectonically active plate boundaries, midocean ridges, and subducting zones.
This is a long horseshoe-shaped seismically active belt of earthquake epicenters, volcanoes, and tectonic plate boundaries located on the fringes of the Pacific basin.
They did field work together and shared their international research on earthquakes that occur along tectonic plate boundaries, which is the case with Alaska, situated at the meeting point of the Pacific and North American tectonic plates.
"Going far beyond simply revising rupture occurrence probabilities in the existing model, AIR's updated model reflects a new understanding of the complex network of plate boundaries and crustal faults that underlie the Japanese archipelago," said Guin.
Several relevant tectonic elements, plate boundaries and active volcanoes, provide a context for the seismicity presented on the main map.
Dr Baptie, head of seismology at the British Geological Survey, said: "We're still affected by the plate motions and the forces that build up at the plate boundaries.
The report said that the faults in the plate boundaries of the subduction zones make them likely to be prone to rupture, generating massive earthquakes at temperatures between 150 and 450AC.
Worldwide, most tsunamis, such as the 2004 Indian Ocean tsunami and the 2011 tsunami off Japan, are triggered by large earthquakes near plate boundaries. Tsunamis triggered by mega-landslides are far less frequent than those caused by earthquakes.