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Petrographic and Mineralogical Study of the Stratigraphic Sequences between Gercus and Pila Spi Formations within Baikhair Anticline in Dohuk District, Northern Iraq | ||
| Tikrit Journal of Pure Science | ||
| Article 1, Volume 17, Issue 1, 2012, Pages 248-361 | ||
| Author | ||
| A. A. Al-Sanjari | ||
| Abstract | ||
| The research includes petrographic and mineralogical study of the stratigraphic sequences between Gercus and Pila Spi Formations within Baikhair anticline in Dohuk district, northern Iraq, which composes of alternations of carbonate and sandstone rocks, using polarizes microscope and thin sections that treated with alizarine red pigment. Point counting is also accomplished, in addition to separation of insoluble residue of heavy minerals for some samples of the carbonate rocks. The carbonate rocks compose of micrite (micro-micrite and micro-spar) and grains of each of skeletal one (alveolinide, meleolide, rotalide, globigerina, ostracoda, carbonate algae, and organic clastics) and non-skeletal grains (pellets and extra- and intraclastics). The sandstone rocks of the stratigraphic sequences between Gercus and Pila Spi Formations are composed of quartz, feldspar, organic clstics, and cement, in addition to other constituents. These rocks are carbonate lithic arenites. The main mineral constituting the carbonate rocks in the studied sequences is calcite, with less abundant dolomite and insoluble residue minerals (clay minerals, quartz and chert). | ||
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