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Why does the Arabian Desert contain large petroleum reserves?

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Arabian Desert
Arabian Desert The Arabian Desert, the largest desert in Asia, covering an area of about 900,000 square miles (2,300,000 square km).

The Arabian Desert contains vast petroleum reserves primarily due to its unique geological composition in the east, which consists of extensive sedimentary rock layers deposited over the past 541 million years.1

These sedimentary areas represent the deposits of ancient seas that accumulated along the margins of the ancient Arabian platform. Within these layers, particularly in Jurassic and Cretaceous limestone strata (dating from approximately 65 to 200 million years ago), oil and gas became trapped at depths of two miles or less.12

The region is part of the predominant Arabian-Iranian sedimentary basin, which is unique globally for containing more than 20 supergiant oil fields. While the western portion of the Arabian Desert is composed of an ancient, non-petroliferous platform, the eastern sedimentary basin provided the ideal conditions for the generation and preservation of these massive hydrocarbon resources.312