The Bahariya Formation (also transcribed as Baharija Formation ) is a fossiliferous geologic formation dating back to the early Cenomanian , which outcrops within the Bahariya depression in Egypt , and is known from oil exploration drilling across much of the Western Desert where it forms an important oil reservoir .
4-533: The Bahariya Formation forms the base of the depression, the lower part of the enclosing escarpment and all of the small hills within. The type section for the formation is found at Gebel El-Dist, a hill at the northern end of the Bahariya depression. Four depositional sequences have been recognised in the Bahariya Formation in the Bahariya depression, separated by three sub-aerial unconformities . The formation
8-465: A stratigraphic sequence or stratigraphic boundary. If the stratigraphic unit is layered, it is called a stratotype, whereas the standard of reference for unlayered rocks is the type locality . Also it can be defined as "The particular sequence of strata chosen as standard of reference of a layered stratigraphic unit." When a stratigraphic unit is nowhere fully exposed, the original type section may be supplemented with reference sections covering
12-402: The material is yet to be described. Other taxa include Sapindales , Piperaceae , Lauraceae , Platanaceae , Magnoliopsida , Nymphaeaceae , Cornaceae , Proteaceae and Vitaceae not identified at genus level; and miospore and pollen species. Type section A stratotype or type section in geology is the physical location or outcrop of a particular reference exposure of
16-566: Was deposited during a period of relative rise in sea level, with each unconformity representing a relative fall in sea level. Each of the individual sequences contains sediments deposited under fluvial , shoreline and shallow marine conditions. Direct fossils are sparse, though plant leaves with extensive damage from folivorous insects have been documented. In addition, there are isolated theropod teeth disputedly assigned to dromaeosaurids , or to abelisaurids . Thirty different genera are known from Bahariya, including megaflora . Much of
#995004