Mistassini dike swarm

{{Short description|Large geological structure in Canada}}

Image:Matachewan and Mistassini dike swarms.png

The Mistassini dike swarm is a 2.5 billion year old Paleoproterozoic dike swarm of western Quebec, Canada. It consists of mafic dikes that were intruded in the Superior craton of the Canadian Shield. With an area of {{Convert|100000|km2|mi2|abbr=on}}, the Mistassini dike swarm stands as a large igneous province.[http://www.thefreelibrary.com/Igneous+rock+associations+in+Canada+3.+Large+Igneous+Provinces+(LIPs)+...-a0124343378 Igneous rock associations in Canada 3. Large Igneous Provinces (LIPs) in Canada and adjacent regions: 3 Ga to Present.]