Dike swarm

A dike swarm or dyke swarm is a large structure consisting of a major group of parallel, linear, or radially oriented   within. They consist of several to hundreds of dikes emplaced more or less contemporaneously during a single intrusive event, and are magmatic and stratigraphic. Such dike swarms may form a and are the roots of a volcanic province.

The occurrence of dike swarms in  and  terrains is often cited as evidence for  activity associated with abnormally high  potential temperatures.

Dike swarms may extend over 400 km in width and length. The largest dike swarm known on Earth is the in the western half of the  in, which is more than 500 km wide and 3000 km long.

The number of known giant dike swarms on is small, only about 25. However, the primary geometry of most giant dike swarms is poorly known due to their age and subsequent activity.

Dike swarms have also been found on and.

Africa

 * (South Africa)
 * (Botswana)
 * Dolerite dikes in Massif (, Central Africa)

Antarctica

 * (East Antarctica)

Asia

 * (North China craton, China)
 * (Russia)
 * (northeastern Shikoku, Japan)

Australia

 * (South Australia)
 * (Western Australia)
 * (Victoria, Australia)

Europe

 * (southwest Norway)
 * (southeast Norway, Swedish west coast)
 * (, Scotland)
 * (Russia)
 * (northwest Scotland)
 * (, Italy)
 * , Finland
 * (, Germany)
 * , Russia

Canada

 * (central )
 * ( and )
 * (,, , and Ontario)
 * (northwestern Ontario)
 * (eastern Ontario)
 * (western Quebec)
 * (northeastern Ontario)
 * (northeastern Ontario)

Greenland

 * (western )

United States

 * (southeastern, northeastern )
 * (southeastern )
 * (central )
 * , southern
 * , southern

South America

 * Dyke swarms associated with the
 * Cuaró dyke swarm, Uruguay
 * , Peru
 * Florida dyke swarm
 * Nico Perez dyke swarm
 * Treinta y Tres dyke swarm
 * (Buenos Aires Province, Argentina)
 * Treinta y Tres dyke swarm
 * (Buenos Aires Province, Argentina)