4 Key Terms Flashcards
Core
Earth’s innermost layer.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/351/794/208/a_image_thumb.jpg?1627674076)
Cratons
Ancient, large, and stable parts of the earth’s continental crust.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/351/794/209/a_image_thumb.png?1627673551)
Crust
The surface and outermost layer of the earth.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/351/794/210/a_image_thumb.jpg?1627674096)
Emplacement
A geologic process that delivers materials (sometimes diamonds) to the surface.
Igneous rock
A category of rocks formed from a molten state.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/351/794/212/a_image_thumb.png?1628019184)
Kimberlite
An igneous rock that transports diamonds to the surface.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/351/794/213/a_image_thumb.jpg?1627674119)
Lamproite
An igneous rock, rarer than kimberlite, that transports diamonds to the surface.
Mantle
Layer between the earth’s crust and its core.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/351/794/215/a_image_thumb.jpg?1627676609)
Metamorphic rock
A category of rocks that have been altered by heat and pressure.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/351/794/216/a_image_thumb.png?1627676670)
Pipe
A deep vertical formation at the earth’s surface that results from a kimberlite or lamproite emplacement.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/351/794/217/a_image_thumb.jpg?1627676711)
Subduction
Process in which two crustal plates collide, forcing one under the other.
![](https://s3.amazonaws.com/brainscape-prod/system/cm/351/794/218/a_image_thumb.jpg?1627676742)