Two types of landforms are created by volcanic eruptions, Intrusive and Extrusive Landforms. intrusive landforms are formed in the Earth’s interior.
Intrusive Volcanic Landforms
- Intrusive landforms formed due to volcanic eruptions are
- Dykes: These are vertical intrusions of igneous rocks. They are formed when magma force the rock apart under the surface of the Earth.
- Lopoliths: These are saucer-shaped intrusions which occur between the layers of sedimentary rocks.
- Sill: A sill is a terrace-like feature which is formed between the beds of sedimentary or igneous rocks.
- Batholiths: It is the large-sized intrusions in 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 upwards. The erosion and denudation of the Earth’s surface bring laccoliths to the surface of the Earth.
- Phacolith: These are small structures which cool down and solidify near the crest of an anticlinal fold.
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