The Bajocian to Bathonian Dhruma Fm is discussed in outcrops of the Oman Mountains in the Sultanate of Oman. Similar to the Upper Mafraq Member (Schlaich et al. 2018), the Dhruma Fm represents deposits of a shallow-marine environment. It is dominated by carbonates and onlaps onto the Mafraq Fm from the northwest to the southeast. It represents deposits of a shallow-marine environment and is characterized by peritidal, lagoonal, and high-energy “shoal-like” deposits and the occurrence of several discontinuity surfaces such as hard- and firmgrounds (Schlaich and Aigner 2017). Low-energy lagoonal facies are upward increasingly replaced by high-energy facies as well as laterally toward the northwest. Correlations indicate a very low relief, thus supporting the existence of a vastly extensive, epeiric carbonate ramp (Schlaich and Aigner 2018).
Schlaich, M. and Aigner, T. (2018). An Almost Forgotten Model for Epeiric Carbonates: The IRWIN Concept Resurrected – Dhruma Formation in the Sultanate of Oman, Lower Triassic to Middle Jurassic Sequence of the Arabian Plate, Ed. Michael Pöppelreiter, EAGE, p.295-312.
Schlaich, M. and Aigner, T. and Bendias, D. (2018). Facies Distribution, Depositional Environment & Reservoir Geometries of Clastic Sandbodies in the Lower Jurassic Mafraq Member (Oman Mountains, Sultanate of Oman). Lower Triassic to Middle Jurassic Sequence of the Arabian Plate, Ed. Michael Pöppelreiter, EAGE, p.191-227.
Schlaich, M. and Aigner, T. (2017). Facies and Integrated Sequence Stratigraphy of an Epeiric Carbonate Ramp Succession: Dhruma Formation, Sultanate of Oman. The Depositional Record.
