Flood basalts.
Convection
Radioactive decay
Igneous rock.
Hot mantle plumes rise toward the surface within a plate
No. Saturn is a gas giant. It doesn't have a solid surface.
can be seen at the surface in the form of volcanic activity... novanet
No. Jupiter is a gas planet. It has no surface on which volcanoes might form.
Scientists believe that the interior structure of Mercury includes a metallic core, an intermediate rocky layer, and a thin brittle crust. Surface features indicate that volcanic activity once existed at the surface
Convection
The surface of Callisto is heavily cratered and extremely old. It does not show any sign of volcanic activity.
No, and it has no surface. It is a gas planet
lava
Earthquakes or volcanic activity can change the surface of the Earth.
Radioactive decay
Igneous rock.
This is known as a volcanic eruption.
During the Pennsylvanian time period, there was a lot of volcanic activity and these constituted a lot of rock formation. Volcanic ashes also settled on the earth's surface and buried some trees.