The Tectonic Payload weapons package can be used to create Tectonic Missiles. It can be used only with the Missile chassis.
A Tectonic Missile detonation causes an earthquake that raises the target terrain by 1-4 level of altitude, depending on the reactor type. A Fission Reactor raises the terrain one level, a Singularity reactor up to four levels. Tectonic missiles are considered delivery platforms instead of combat units, and so may not target bases or units.