This is known as large igneous province in geology.

Large igneous provinces are associated with a handful of ore deposit types including:

There are a number of well documented examples of large igneous provinces identified by geological research.

Volcanic rifted margins are found on the boundary of large igneous provinces.

Basalt is the rock most typical of large igneous provinces.

The resulting large igneous province is, in area covered, the most extensive on earth.

The formation of large igneous provinces by flood basalt events could have:

This has been called the Karoo-Ferrar large igneous province.

Possibly related to the Caribbean large igneous province (main events: 95-88 Ma).

Much of the area includes the Siberian Traps which is a large igneous province.