September 5, 2025Iraqi Geological JournalOpen Access

Comprehensive Facies Analysis and Depositional Environment of the Lower Cretaceous Yamama Formation in the Nasiriyah Oilfield, Southern Iraq

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This analysis identifies carbonate ramp facies and depositional environments in the Yamama Formation, highlighting stratigraphic importance.

Distinct facies associations were identified in the Yamama Formation, showcasing diverse depositional settings.
Five associations were found, including peritidal, lagoonal, shoal, restricted marine, and shallow open marine environments.
The study reveals that the facies reflect variances in water depth and energy levels across the carbonate ramp.
This insight enhances understanding of the hydrocarbon reservoir heterogeneity within the Yamama carbonate system.

Alsultan et al. (2025) studied this question.

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This analysis identifies carbonate ramp facies and depositional environments in the Yamama Formation, highlighting stratigraphic importance.