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Lithofacies and petrographic studies of Injana formation in Himrin anticline, NE- Tikrit | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 14, Issue 3, 2009, Pages 232-240 | ||
| Author | ||
| Lafta S. Kadem | ||
| Abstract | ||
| A study of lithofacies and petrography of Injana formation have been carried out on the high-way between Tikrit and Kirkuk. The formation outcrop composed of a succession of sandstone, siltstone and claystone. The grain size analysis of sandstone indicate that these grains are fine to medium size and coarsening upward, and the degree of sorting is bad to good sorting which related to river environment. From the petrographic studies for sandstone revealed that the carbonate rock fragment forming the main component in addition to chert fragment. Monocrystalline and polycrystalline quartz also exist in 17-30%, feldspar rarely occured. The heavy minerals biotite, hornblende, rutile, muscovite and opaque minerals also present. The high percentage of carbonate rock fragments indicate that they derived from the older carbonate such as Fat'ha and other older carbonate formations. | ||
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