02243nab a2200229 i 4500 acta24655 20220725124520.0 161017s1980 hu o 0|| eng d 0365-8066 SZTE Egyetemi Kiadványok Repozitórium hun eng Al-Fadhli I. Phosphorites in Sinjar Formation of Sulaimaniah area, Iraq [elektronikus dokumentum] / Al-Fadhli I. University of Szeged, Department of Mineralogy, Geochemistry and Petrology Szeged 1980 219-233 Acta mineralogica-petrographica 24 No. 2 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. Természettudományok Föld- és kapcsolódó környezettudományok Kőzettan, Ásványtan, Földtan Mallick Khalil Ahmed aut http://acta.bibl.u-szeged.hu/24655/1/mineralogica_024_fasc_002_219-233.pdf Dokumentum-elérés