Regional Stratigraphic Framework, Depositional Environments, and Exploration Potential of the Middle Jurassic Dhruma Formation, Saudi Arabia

D.Z. Tang¹, P. Lawrence¹, W. Tan¹, A. Bakhiet¹, and G. Gregory¹

Abstract

The Middle Jurassic Dhruma Formation is of Bajocian-Bathonian age, and represents a composite second-order sequence in Saudi Arabia. An integration of well log correlations, 3D seismic interpretations, and sedimentological studies has been undertaken to unravel the sequence stratigraphic framework. The Lower Dhruma Member is interpreted as a transgressive systems tract, with the maximum shale content of the “Dhruma Shale” representing the maximum flooding surface (MFS) of the second-order Dhruma sequence. The highstand systems tract of this second-order sequence consists of an overall shallowing-up interval comprising the Faridah, Sharar and Lower Fadhili members, with each member representing a third-order composite sequence.

AAPG Search and Discovery Article #90188 ©GEO-2014, 11th Middle East Geosciences Conference and Exhibition, 10-12 March 2014, Manama, Bahrain