INTRODUCTION AND OCCURRENCE - The Field Description of Igneous Rocks - page 8

Dyke
Laccolith
Sill
Lopolith
Figure 1.3 Broad types of shallow level intrusions; sills, dykes, lopoliths and
laccoliths (see Chapter 6 for detailed section).
Figure 1.4 Thick sills ( > 100m) and dykes cutting through sediments in the
Transantarctic mountains, Antarctica (total height of section circa 300m).