Present along the surface exposures of the anticline are rocks dating from Upper Cretaceous to Paleocene age. |
From the maps presented in Figure 2, it is apparent that the well tested the crest of an anticline that formed during the Cenozoic. |
The field evidence includes the presence of several longitudinal extensional folds such as a rollover anticline and drag folds that are related to normal faults in the area. |
Now, this one fact greatly influenced its fate, for an anticline cannot be regarded as a strong or stable arrangement of strata. |
The result is a monoclinal rollover anticline, its tightness increasing progressively with continued fault displacement. |
In this locality, the top 20 m of the Asmari Limestone exhibits palaeo-weathering along joints suggesting subaerial exposure of the Asmari near the crest of an anticline. |