Open AccessMicrofacies Characterizations and Paleoenvironment of Upper Part of Qamchuqa Formation from Chwarqauran Section, Sulaimaniyia Area, Kurdistan Region, Iraq
Author(s) -
Salah Ali Hussain,
Abdalratha Mohammed Sahaab,
Khaldoun Ahmad,
Israa Q. Hussain,
Sarah A. Hashem
Publication year - 2021
Publication title -
iraqi geological journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.2
H-Index - 5
eISSN - 2663-8754
pISSN - 2414-6064
DOI - 10.46717/igj.54.1b.9ms-2021-02-27
Subject(s) - wackestone , petrography , geology , facies , lithology , foraminifera , section (typography) , dolomite , sedimentary depositional environment , paleontology , reef , benthic zone , sedimentary rock , geochemistry , oceanography , structural basin , advertising , business
The Qamchuqa Formation was studied in Chwarqauran section, Sulaimanyia, Kurdistan region, Northeastern Iraq. The lithology of the formation contains limestone throughout the whole section except for one bed of dolomite at the Middle part. Twenty-four slides were prepared from 24 rock samples that were taken from this section to discriminate the petrography and fossil content. The petrographic study shows four main microfacies including lime mudstone, wackestone, packstone, and floatstone. Additionally, there are four sub microfacies: bioclast wackestone, miliolid wackestone, bioclast packstone and orbitolinid packstone. However, the fossil content shows the abundance of benthic foraminifera against the planktonic. All the microfacies indicate facies zone 7, 8 and 9A which reflect deposition in the platform interior between the tidal flat to the mid ramp and back reef environment