Which topographic factor most directly explains why the western coast of the Qatar Peninsula (near Dukhan) exhibits significant anticlinal surface folding compared to the low-relief eastern coastline?
Answer and explanation
Correct answer: A. The Dukhan Anticline uplift along the Arabian Gulf structural trend
- Step 1: Qatar lies on the eastern edge of the stable Arabian Platform.
- Step 2: The most prominent structural feature of the peninsula is the Dukhan Anticline, a major north-south trending anticline formed by deep salt pillowing and tectonic compression.
- Step 3: This geological uplift created elevated limestone ridges on the western coast where Qatar's primary onshore oil fields are situated.
Answer
The Dukhan Anticline uplift along the Arabian Gulf structural trend.
Why not the others: The Dammam Dome is a Saudi structure and wind deflation does not fold rock; Hormuz salt diapirs are found in Iran and the UAE, not under Dukhan; the Zagros flexure lies across the Gulf and does not shape Qatar's western coast.
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