PROVENANCE OF SHALES OF THE KASHAFRUD FORMATION IN THE NAVIA SECTION (WEST OF BOJNOURD), BASED ON GEOCHEMICAL DATA

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SARBAZ N.; MAHBOUBI A.; MOUSSAVI HARAMI R.; KHANEHBAD M.

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Journal: GEOSCIENCES Year:2017 | Volume:26 | Issue:104 Page(s): 119-210

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Title

PROVENANCE OF SHALES OF THE KASHAFRUD FORMATION IN THE NAVIA SECTION (WEST OF BOJNOURD), BASED ON GEOCHEMICAL DATA

Author(s)

SARBAZ N. | MAHBOUBI A. | MOUSSAVI HARAMI R. | KHANEHBAD M. | Issue Writer Certificate

Keywords

GEOCHEMISTRYQ2

SOURCE ROCKQ2

TECTONIC SETTINGQ1

PALEOWEATHERINGQ1

KASHAFRUD FORMATIONQ2

Abstract

The Koppeh- Dagh Basin in the northeast Iran formed after closure of the Paleotethys in the south of Turan plate. KASHAFRUD FORMATION in the Navia Section (west of Bojnourd) with a thickness of 749 m is composed of silici-clastic rocks (conglomerate, sandstone and shale). In order to interpret provenance of this formation in the study section, 12 shale samples have been geochemically analyzed. The samples are rich in quartz and clay minerals, with respect to (UCC) depletion in Na2O, CaO, MgO, Cu, Nb and Sr and enrichment in Ni, Co, V, Y and U. Plotting TiO2 versus Al2O3, Zr versus TiO2, as well as ternary diagram (SiO2/20), (k2O+Na2O), (MgO+TiO2+FeO) and diagram Al2O3, (Cao+Na2O+K2O), (FeO+MgO) suggest that the original source of this formation was probably from intermediate igneous rocks. Calculated PIA and CIA indicate high chemical weathering and semi- humid climatic condition in the source area. Prepared discrimation diagram using the major oxides (SiO2 versus K2O/Na2O and ternary diagrams SiO2/20, Na2O+K2O, TiO2+MgO+Fe2O3), shows that the shales of this formation were plotted in the passive continental margin. Paleogeographic reconstruction for this formation, during the Middle Jurassic shows that sedimentation of this formation is mainly controlled by intracontinental subsiding basin and the source of these sediments was from the southeast of the Kopph-Dagh Basin

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APA: Copy

SARBAZ, N., MAHBOUBI, A., MOUSSAVI HARAMI, R., & KHANEHBAD, M.. (2017). PROVENANCE OF SHALES OF THE KASHAFRUD FORMATION IN THE NAVIA SECTION (WEST OF BOJNOURD), BASED ON GEOCHEMICAL DATA. GEOSCIENCES, 26(104 ), 119-210. SID. https://sid.ir/paper/32682/en

Vancouver: Copy

SARBAZ N., MAHBOUBI A., MOUSSAVI HARAMI R., KHANEHBAD M.. PROVENANCE OF SHALES OF THE KASHAFRUD FORMATION IN THE NAVIA SECTION (WEST OF BOJNOURD), BASED ON GEOCHEMICAL DATA. GEOSCIENCES[Internet]. 2017;26(104 ):119-210. Available from: https://sid.ir/paper/32682/en

IEEE: Copy

N. SARBAZ, A. MAHBOUBI, R. MOUSSAVI HARAMI, and M. KHANEHBAD, “PROVENANCE OF SHALES OF THE KASHAFRUD FORMATION IN THE NAVIA SECTION (WEST OF BOJNOURD), BASED ON GEOCHEMICAL DATA,” GEOSCIENCES, vol. 26, no. 104 , pp. 119–210, 2017, [Online]. Available: https://sid.ir/paper/32682/en

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