Question

Difficulty: MediumState Economy, Agriculture, and Natural Resources

Assam is the pioneer state in India's petroleum sector, with significant crude oil and natural gas reserves located across the Brahmaputra Valley. Based on their geographical locations in Upper Assam, which of the following represents the correct sequence of these major oil fields arranged from East to West?

  1. 1Digboi Oil Field
  2. 2Naharkatiya Oil Field
  3. 3Moran-Hugrijan Oil Field
  4. 4Rudrasagar Oil Field

Answer

The correct sequence of Assam's major oil fields from East to West is Digboi Oil Field (Tinsukia district), followed by Naharkatiya Oil Field (Dibrugarh district), Moran-Hugrijan Oil Field (Dibrugarh/Sivasagar boundary), and Rudrasagar Oil Field (Sivasagar district).
The correct geographical alignment from East to West across the petroleum belt of Upper Assam starts with Digboi in Tinsukia district, moves westward to Naharkatiya in Dibrugarh district, continues to Moran-Hugrijan near the Sivasagar border, and ends at Rudrasagar in Sivasagar district.

Step-by-Step Solution

1
Identify the district location and spatial position of each oil field within the Upper Assam oil basin.
Digboi is situated in Tinsukia district; Naharkatiya is in Dibrugarh district; Moran-Hugrijan is on the Dibrugarh-Sivasagar border; Rudrasagar is in Sivasagar district.
Administrative districts in Upper Assam extend geographically from east to west in the order: Tinsukia → Dibrugarh → Sivasagar.
2
Arrange the fields chronologically along their longitudinal position from East to West.
The correct geographical progression from East to West is Digboi → Naharkatiya → Moran-Hugrijan → Rudrasagar.
Digboi (~95.6° E) is the easternmost field, followed by Naharkatiya (~95.3° E), Moran (~94.9° E), and Rudrasagar (~94.6° E).

Key Concept

Geographical and spatial distribution of petroleum natural resources in Assam
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