e/Grenville dike swarm

Information
has gloss	eng: The Grenville dike swarm is a large Proterozoic dike swarm in the Canadian provinces of Ontario and Quebec. It is one of the several major magmatic events in the Canadian Shield and it possibly formed 590 million years ago along a triple junction that might have been related to a mantle plume. The maximum length of the Grenville dike swarm is .
lexicalization	eng: Grenville dike swarm
instance of	c/Dike swarms