Efficiency of oil and gas generation of Palaeozoic formation outcrops in Nazdur Area, Kurdistan region, northern Iraq : insights from palynological study

Abstract EN

The studied samples were collected from the Palaeozoic outcrops, Khabour, Pirispiki, Kaista, Ora, Harur, and Chia Zairi formations in Nazdur Anticline, Amadia about 457 km due north of Baghdad, Iraq's capital city.

Qualitative assessments of 29 samples were conducted by using textural microscopy in determining the percentage of amorphous organic matter for palynofacies type belonging to different types of kerogen.

This organic matter contains acritarchs, spores, and algae deposited in the dysoxic-anoxic environment.

The organic matters are from mature to post mature and have a thermal alteration index of -3 to +3 by Pearson's and Staplin's scales, respectively, with palynomorphs of orange to dark brown colors on the palynomorphs.

These ranges of colors indicate mature organic matters.