Keywords : Khurmala

Paleoenvironmental Study of Khurmala Formation by Ostracoda in Shaqlawa and Dohuk area, Northern Iraq

Mahfoudh Al-Hadeedy; Saleh Khalaf

Iraqi National Journal of Earth Sciences, 2020, Volume 20, Issue 2, Pages 148-164
DOI: 10.33899/earth.2020.170375

   A detail paleoenvironmental study of ostracods fauna to investigated the paleoenvironment of Khurmala Formation for two section Northern Iraq; the first (Hjran section) lies near Shaqlawa city, and the second (Dohuk section) lies near Dohuk city. Based on ostracods study conclude that Khurmala Formation were deposited in shelf environment, about (30 – 200) meter in depth.

Diagenesis of Khurmala Formation in Dokan Area, North Eastern Iraq

Safwan F. Al-Lihaibi

Iraqi National Journal of Earth Sciences, 2012, Volume 12, Issue 3, Pages 17-34
DOI: 10.33899/earth.2012.64507

Diagenesis were studied within Khurmala limestone Formation at Dokan area, Northeastern Iraq. The study recognized many diagenetic processes
affected limestone within a successive sequence including micrite envelope, dolomitization, dissolution, neomorphism, cementation, mechanical and chemical compaction. The study determined four diagenetic zones. They are marine zone (micrite envelope), mixing zone (dolomitization), meteoric pheratic zone (dissolution, neomorphism, cementation) and burial zone (mechanical and chemical compaction). According to the history of diagenesis and their sequence, the study revealed that periodical fluctuation in sea level has influenced on diagenetic processes and their paragenetic sequence.

Facies Analysis and Depositional Environment of Khurmala Formation in Bekhair Anticline –Dohuk Area, North Iraq

Nabil Al-Banna; Majid M. Al-Mutwali; Jamal S. Al-Ghrear

Iraqi National Journal of Earth Sciences, 2006, Volume 6, Issue 2, Pages 13-22
DOI: 10.33899/earth.2006.36375

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).