Petrographic study of Injana Formation in selected areas in Iraq

Injana Formation is extensively exposed in Iraq. Three sections have been chosen from Zawita, Tikrit and Tar Al-Najaf areas. Systematic sampling has been performed and 32 samples for petrographic investigation were collected from the outcrops of selected areas. The megascopic description in precise details is also attained. Petrographic investigation using polarized transmitted light microscopy reveals an intense effect of the Zagros-Taurus provenance on Injana sediments. Zawita and Tikrit sections are closer to the source area from the Tar Al-Najaf section. The mineralogical component, size and shape of sand grains confirmed this result. Injana sediments in Tar Al-Najaf subjected to long transportation because the source rock is far away and long distance from this area.