Tiberium vein detonation

From Command and Conquer Wiki

Yet another in a long line of Nod military applications of Tiberium, the Vein Detonation is an extremely lethal support power. After the capture of Alphonse Giraud by the Black Hand, the scientist was persuaded into developing weapons technology for the Brotherhood. He developed the principles behind the Vein Detonation in a short time, and when LEGION was sent to capture the Tacitus, the AI used it to destroy GDI refineries and equipment at three Tiberium patches in the area.

As Tiberium has spread throughout the Earth, underground veins of the mineral also are found worldwide. Using similar technology to the catalyst missile, the vein detonation causes the subterranean deposits under a given locale to explode. However, the vein explosion is significantly more widespread and violent than the catalyst missile, and it causes massive damage to any target above the vein. However, it can only be used on or near a Tiberium field; limiting it's effectiveness to units marching on Tiberium or facilities very close to a patch.