11/12/2020 · Cratons are the part of the earth’s continental crust which has attained stability and was least affected by deformation during the later periods. 2. Cratons are generally found in the interiors of tectonic plates. A shield is part of the craton, where the …

geology. craton, the stable interior portion of a continent characteristically composed of ancient crystalline basement rock. The term craton is used to distinguish such regions from mobile geosynclinal troughs, which are linear belts of sediment accumulations subject to subsidence ( i.e., downwarping).

craton. « Back to Glossary Index. The stable interior part of a continent, typically more than a billion years old, and sometimes as old as 2.5-3 billion years. When exposed on the surface, a craton is called a shield. Synonyms:

Cratons are generally found in the interiors of continents and are characteristically composed of ancient crystalline basement crust of lightweight felsic igneous rock such as granite. They have a thick crust and deep roots that extend into the mantle beneath to depths of 200 km.

01/05/2004 · A craton is a large, coherent domain of Earth's continental crust that has attained and maintained long-term stability, having undergone little internal deformation, except perhaps near its margins due to interaction with neighbouring terranes.

Cratons are defined as “part of the crust which has attained stability and which has not been deformed for a long time” (Bates and Jackson, 1980), thus they are Precambrian in age (Kusky et al., 2007). From: Gondwana Research, 2013. Related terms: Subduction; Granite; Collision; Peridotite; Deformation; Terrane; Zircon; Orogenic Belt; Magmatism

craton. Cratons, or continental platforms are the ancient, stable geological provinces at the core of continents ( orange in image at left). Cratons have peristed for more than 500 million years (some over 2 billion years). A shield is defined as a craton in which basement rocks have been exposed by erosion at the surface; and such shields ...

01/04/2018 · The model cratons form cold and from material that was originally crystallised at shallow depth. The formation is also a time of temperature inversion in the mantle: cool material is dumped at the core mantle boundary resulting in higher-than-average core heat flux. The phase of mobile-lid convection that follows this (analogous to plate ...