Structural and stratigraphic settings of Upper Cretaceous and Tertiary marine deposits in the Jardas Al Jarari study area in northeastern Libya have been reviewed. The study area is composed of Upper Cretaceous to lower Oligocene rock units represented from the oldest to youngest by: marly limestone of the Al Majahir Formation, dolomitic limestone of the Wadi Dukhan Formation, chalky limestone of the Al Uwayliah Formation, nummulitic limestone of the Darnah Formation, and marly and algal limestone of the Al Bayda Formation. These formations are separated by unconformity surfaces. During the Jurassic to Early Cretaceous, Al Jabal Al Akhdar was a part of a passive continental margin, representing a large sedimentary basin in northeastern Libya. By the end of the Cretaceous (mainly Santonian), this structure was inverted in response to right-lateral shear, and the result was the uplift of Upper Cretaceous sediments within the Darnah and Al Bayda formations (middle Eocene to upper Oligocene) forming the inlier structure of Jardas Al Jarari. Late Cretaceous inversion was initiated with brittle shear deformation along E–W to WNW–ESE major dextral shear zones and enhanced with ductile shear, and consequently development of a sequence of very tight and overturned F1 and F2 asymmetric open folds trending ENE–WSW and NE–SW, respectively. At the final stage during the Late Cretaceous to early Paleogene, the whole structure is themed with array of Riedel and conjugate Riedel shears along the NE–SW to NNE–SSW sinistral strike-slip faults and NW–SE dextral strike-slip faults, finally enveloped with the formation of E–W to NE–SW trending F3 major fold system.