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प्रश्न
Explain the occurrence of petroleum in India.
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उत्तर
Occurence of Petroleum
1. Most of the petroleum occurrences in India are associated with anticlines and fault traps in the rock formations of the tertiary age.
2. In regions of folding, anticlines or domes, it occurs where oil is trapped in the crest of the up-fold.
3. The oil bearing layer is a porous limestone or sandstone through which oil may flow.
4. Petroleum is also found in fault traps between porous and non-porous rocks.
5. Gas, being lighter usually occurs above the oil.
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संबंधित प्रश्न
State one disadvantage of using coal as a source of power.
Give reasons.
Most industries are concentrated around coal mines.
Which state is the leading producer of the following minerals?
(i) Coal (ii) Oil (iii) Manganese.
Which varieties of coal is used for domestic purposes and why?
Classify the coal fields in India. Name state for each classification.
State two main drawbacks of the Coal found in India.
Give geographical reasons for the following:
The location of coal fields is an important factor in industrial development.
Name three important states which form the tertiary coal distribution chain.
Name any two important petroleum drilling centres for each of these states:
(i) Gujarat (ii) Assam
Name the following:
Iron ore mine in Karnataka
