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Planktonic Foraminifera and Calcareous Nannofossils from Kolosh Foramtion for Ekmala section, Northern limb of Bekhir anticline, North Iraq | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 15, Issue 3, 2010, Pages 256-264 | ||
| Authors | ||
| Omar Ahmed Al-Badrani; Alaa Muhmood Al-Wazan | ||
| Abstract | ||
| Forty samples were collected from stratigraphic successions of Kolosh Formation, on the norther limb of Bekhir anticline , north Iraq. In spite of poorly fossils fauna contents in this clastic formation, but the detailed study gives sixteen species of Plankton Foraminifera . On its range chart we can determinate three Biozones form bottom(older) to top(younger) are: 3- Morozovella angulata Interval Biozone (P 3) 2- Praemurica uncinata Interval Biozone (P 2) 1- Parasubbotina pseudobulloides Interval Biozone(P 1) This Biozones compared with other studies show that first and second biozones of Early Paleocene (Danian age) and the third Zone of late Paleocene (Silandian age), so that Kolosh Formation in the study section aged from latest early Paleocene to Earliest late Paleocene. Seven calcareous Nannofossils species are distinguished: Chiasmolithus danicus (Brotzen,1959) Chiasmolithus sp. Cruciplacolithus primus Perich-Nielsen(1977) Coccolithus sp. Ellipsollithus macellus(Bramlette and Sullivan,1961) Sphenolithus anarrlopus Bukry and Bramlette(1969) Sphenolithus primus Perich-Nielsen(1971) From the standard index species range for this species we suggested that it represent part of Ellipsollithus macellus Biozone (CP3) or (NP4). | ||
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