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DIAGENETIC HISTORY OF THE HARUR FORMATION, EARLY CARBONIFEROUS (TOURNAISIAN), NORTHERN IRAQI KURDISTAN REGION | ||
| Iraqi Bulletin of Geology and Mining | ||
| Article 1, Volume 2, Issue 2, 2006, Pages 83-102 | ||
| Author | ||
| Sardar M. Balaky | ||
| Abstract | ||
| The main diagenetic processes affected the Harur Formation of Early Carboniferous (Tournaisian) in Nazdur area, Northeast of Zakho town, Northern Iraqi Kurdistan are studied. Harur Formation is exposed in the Northern Thrust Zone of Iraq. One surface section, near Nazdur village, far north of Iraqi territory, was chosen for the purpose of this study. Harur Formation has various lithologies, consisting of thin to medium bedded, black, organic limestone, dolomitic limestone, with black micaceous shale mainly in its lower and upper parts. A sum of 35 thin sections of limestones were petrographically studied. The formation had been affected by different diagenetic processes, which belong to three diagenetic stages; early (shallow burial), middle and late (deep burial and subsequent uplifting). Processes belonging to early stage are hardly preserved; those of middle stage are common, while late processes are dominant. The described diagenetic processes are; micritization, dolomitization, neomorphism, cementation, solution, compaction, silicification, and others. | ||
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