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Mineralogical and Geochemical Variations Across the Paleocene-Eocene Sinjar Formation, Dokan Area, Northeastern Iraq | ||
| Iraqi National Journal of Earth Science (INJES) | ||
| Article 13, Volume 24, Issue 2, July 2024, Pages 125-139 PDF (1019.47 K) | ||
| Document Type: Research Paper | ||
| DOI: 10.33899/earth.2023.142953.1138 | ||
| Authors | ||
| noor talal al_taee* 1; Ali Al-jubory2; Imad Mahmood Ghafor3; Harry Rowe4; Giovanni Zanoni5; David L. Dettman6 | ||
| 1Department of Geology, College of Science, University of Mosul, Mosul, Iraq | ||
| 2Department of Petroleum Engineering, College of Engineering, University of Al-Kitab, Kirkuk, Iraq | ||
| 3Department of Geology, College of Science, University of Sulaimani- Iraq | ||
| 4Premier Corex Laboratories, Houston, TX 77041, USA. | ||
| 5Rohm Tek, Houston, TX 77024, USA. | ||
| 6Environmental Isotope Laboratory, Department of Geosciences, University of Arizona, Tucson, AZ 85721, USA. | ||
| Abstract | ||
| The Paleocene-Eocene (P-E) Sinjar Formation from Kalka Smaq section, Dokan area, Sulaimaniya, northeastern Iraq has been studied in terms of mineralogy and geochemistry using X-Ray Diffraction (XRD) supported by Scanning Electron Microscopic (SEM) and elemental X-Ray Fluorescence (XRF) geochemical analyses in addition to stable isotopic C and O analysis. The study revealed indications for mineralogical and elemental variation across the P-E transition which may refer to the regionally recognized depositional and paleoclimate changes of the Paleocene Eocene Thermal Maximum (PETM) in the region. The dominance of shallow marine water deposition is interrupted by fresh-water deposition accompanied by increase in temperature suggesting the warming conditions in the Eocene. This result is supported by mineralogical variation in calcite, Mg-calcite and dolomite accompanied with anomalies in δ18O and δ13C data and variation in CaO, MgO, SiO2, TiO2, Fe2O3, and Al2O3 in addition to Co, Ni, Sr and Ba elemental data which in general may suggest the increase in precipitation and low effect of weathering across the P-E transition boundary in the region. | ||
| Keywords | ||
| Paleocene-Eocene,,; ,،Mineralogy,,; ,،Geochemistry,,; ,،Shallow marine,,; ,،Sinjar Formation | ||
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