Dike (Igneous)

  • Jarmo Korteniemi
Living reference work entry
DOI: https://doi.org/10.1007/978-1-4614-9213-9_112-1


A magmatic vertical sheet intrusion that has penetrated into a preexisting body of rock.


Magmatic dike. Alternative spelling: dyke; Vertical intrusion


A solidified near-vertical subsurface magma body that penetrates through one or more layers of preexisting rock bodies or layers (regardless of rock type). The thickness of a dike is much smaller (cm to meters) than the other dimensions (kilometers), forming a sheetlike structure. Similar but lateral intrusions that form between rock layers are called sills (Magmatic intrusion structure). Dikes per se do not penetrate to the surface, but several landform types may betray their presence. Areal and differential erosion may expose them directly as exhumed dikes. Dike-indicative features are linear or slightly curvilinear over long distances (Head et al. 2006), often appearing in subparallel groups (Korteniemi et al. 2010). They generally cross terrain irrespective of topography (Head et al. 2006). During...


Mantle Plume Magmatic Intrusion Dike Swarm Fracture Floor Spatter Cone 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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© Springer Science+Business Media New York 2014

Authors and Affiliations

  1. 1.Earth and Space Physics, Department of PhysicsUniversity of OuluOuluFinland