Geography
The magma when forced upwards fills vertical cracks or fissures in existing rocks and it then hardens there to form …………… .
- Necks
- Sills
- Dykes
- Laccoliths
Related Questions
An aggregate of minerals, with no definite chemical composition, that forms more or less a definite unit of the earth's crust:
- Rock
- Mineral
- Crust
- Metamorphosis
With reference to Intrusive Igneous Rocks which of the following is incorrect?
- Batholiths — deep-seated large deposits of igneous rocks like graphite.
- Hypobyssal Rocks — small rock deposits.
- Neck — plug at the top of a volcano.
- Dykes — large deposits of cooled magma on the earth's surface.
The process that turns loose sediments into rocks:
- Compaction
- Lithification
- Cementation
- None of the above
The bonding together of compacted sediments by natural bonding materials such as calcium compounds, silica and iron:
- Compaction
- Lithification
- Cementation
- None of the above