Basic types of igneous intrusions: 1. Laccolith 2. Small dike 3. Batholith
4. Dike 5. Sill 6. Volcanic neck, or pipe 7. Lopolith
Note: As a general rule, in contrast to the smoldering volcanic vent in the figure, these names refer to the fully cooled and usually millions-of-years-old rock formations, which are the result of the underground magmatic activity shown. (mediawiki, GNU Free Documentation License)