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Microfacies and age determination of the sedimentary sequences within Walash volcano-sedimentary Group, Mawat Complex, northeast Iraq. | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 13, Issue 3, 2008, Pages 46-52 | ||
| Author | ||
| Nabil Y. Al-Banna | ||
| Abstract | ||
| The sedimentary rocks that existed within Walash volcano-sedimentary Group were studied in three areas: Mawat, Kanaro and Dashti -Khan sections.The sedimentological and paleontological studies enable the authers to recognized four sedimentary facies; two of them (W1, W2 microfacies contain planktonic foraminiferal) indicated deep marine environment extended from outer self to bathyal, the third (W3 microfacies) is benthonic microfacies indicating lagoonal depositional environment, while the fourth (W4) which is conglomerate lithofacies affiliated to shallow marine environment.These sedimentary facies assigned deepening upward depositional environments, this phenomena detected that the depositional arc basin was subducted and their shelf mobils downward with decreasing of sediment influxes during the convergence of the arc land with the Iranian plate.The foraminiferal species existed within the carbonate rocks of Walash Group assigned to Lutetian stage (Middle Eocene) with ranging 42.5-48 MY. | ||
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