ICSE Class 9 Answered
Lopoliths: These are saucer shaped intrusions that occur between the layers of the sedimentary rocks.
Sill: A sill is a terrace like feature which is formed between the beds of sedimentary rocks or the igneous rocks.
Batholiths: It is the large sized intrusions in the igneous rocks at great depths. They come out to the surface of the Earth during the mountain building activity.
Laccoliths: These are dome shaped intrusive landforms which forces the upper part of the rock to bulge upward. The erosion and denudation of the Earth’s surface brings laccoliths to the surface of the Earth.
Phacolith: These are small structures which cool down and solidify near the crest of an anticlinal fold.