Abstract
The studied surface section of Khurmala Formation which lies in the northeast of Dohuk city north Iraq consists of mixed carbonate and clastic sediments, package about 60 meter thick of Early Eocene age. The carbonate sediment is comprising four microfacies association allocated to shoal bank (Kh2), lagoon (Kh1), intertidal (Kh1, Kh3), and supratidal (Kh4), while the clastic sediment included two lithofacies affiliated to estuaries depositional environment. A depositional model of the Khurmala Formation was proposed. Diagenetic processes of dissolution and dolomitization are recognized in microfacies (Kh3).
Highlights
Surface section of the Khurmala Formation has been studied in the northeast of Dohuk city north Iraq (Figure 1)
Khurmala Formation was described for the first time by Bellen, 1953 in well K-114 at Kirkok area
The formation embraces oolitic dolomite and recrystalline limestone, these beds are interfingering with sandstone beds, containing chert, flint, radiolarite and greenstones of silt and sand size
Summary
Surface section of the Khurmala Formation has been studied in the northeast of Dohuk city north Iraq (Figure 1). The lower part of Khurmala Formation embraces brown argillaceous limestone of 16 m thick, it’s base is recognized by the occurrence of large gastropod. It is followed by 18 meter of sandstone embracing thin bed of argillaceous limestone and lenses of channel filled conglomerate with maximum width of 2 meter.
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