Dike (geology)
A dike or dyke in geology is a type of sheet intrusion referring to any geologic body that cuts discordantly across:
- planar wall rock structures, such as bedding or foliation
- massive rock formations, like igneous/magmatic intrusions and salt diapirs.
Dikes can therefore be either intrusive or sedimentary in origin.
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Read more about Dike (geology): Magmatic Dikes, Sedimentary Dikes