Other big fields, at Majnoon and Nahr Umar, are nearby. Clustered to the west and south of the Zagros Mountains, which loom across the border in Iran, this is a geological el Dorado.

而像Majnon和Nahr Umar等其他大油田，也分布附近，簇拥在横卧伊朗边境的扎格罗斯山脉以西、以南，这里是一座地质学宝库。

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Other big fields, at Majnoon and Nahr Umar, are nearby.

ECONOMIST: Iraq's southern oil hub

For a better understanding of the specific fields that underlie this potential, like Rumaila, Majnoon and West Qurna, take a look at our special Forbes.com report on the 10 most important oilfields of the future.

FORBES: Iraq's Oil Potential 'Eyepopping'

Third is Majnoon, also in Iraq.

FORBES: Reserves