Phosphorites in Sinjar Formation of Sulaimaniah area, Iraq
Phosphorites in Sinjar Limestone Formation of Paleocene age have been discovered and investigated for their petrographic and geochemical characters. The study of the rocks associated with the phosphorites was also made to determine the sources of the phosphorites and the degree of correspondence wit...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
University of Szeged, Department of Mineralogy, Geochemistry and Petrology
Szeged
1980
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| Sorozat: | Acta mineralogica-petrographica
24 No. 2 |
| Kulcsszavak: | Kőzettan, Ásványtan, Földtan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/24655 |
| Tartalmi kivonat: | Phosphorites in Sinjar Limestone Formation of Paleocene age have been discovered and investigated for their petrographic and geochemical characters. The study of the rocks associated with the phosphorites was also made to determine the sources of the phosphorites and the degree of correspondence with the associated limestone beds. The two horizons of phosphorites in the same stratigraphic succession are separated by 43 eet thick limestone beds which are completely non-phosphatic. The maximum content of P205 fn lower phosphorite horizon is 4.061% and the minimum is 1.460%. The upper horizon of the ¡phosphorite has a maximum of 5.947% and the minimum of 1.360% P2 05 at the top of this horizon. It is concluded that the layered phosphorite beds are recycled sedimentary deposits from the near by source. No effects of phosphatization could be observed on the associated rocks. Five phases of sedimentation representing different physico-chemical controls have been established on the bases of physical properties, chemical composition, petrographic characteristics and the fossils present in the beds. This discovery of phosphorites appeared very helpful in establishing the yet not reported linkage in the regional distribution of phosphorites of Paleocene age in Zagros Mountains of Iran in the east and Syria and Turkey on the west of Iraq. |
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| Terjedelem/Fizikai jellemzők: | 219-233 |
| ISSN: | 0365-8066 |