PROVENANCE AND TECTONIC SETTING OF KASHAFRUD FORMATION IN THE NAVIA SECTION (WESTERN BOJNOURD), BASED ON PETROGRAPHY AND GEOCHEMISTRY STUDIES OF SANDSTONES

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SARBAZ NEDA; MAHBOUBI ASADOLLAH; MOUSAVI HARAMI SEYED REZA; KHANEBAD MOHAMMAD; MAHANIPOUR AZAM

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Journal: APPLIED SEDIMENTOLOGY Year:2017 | Volume:4 | Issue:8 Page(s): 89-102

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Title

PROVENANCE AND TECTONIC SETTING OF KASHAFRUD FORMATION IN THE NAVIA SECTION (WESTERN BOJNOURD), BASED ON PETROGRAPHY AND GEOCHEMISTRY STUDIES OF SANDSTONES

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Keywords

PETROGRAPHYQ2

GEOCHEMISTRYQ2

KASHAFRUD FORMATIONQ2

BAJOCIAN-? BATHONIANQ1

WEST BOJNOURD AND KOPET DAGHQ1

Abstract

Kashafrud Formation in the Navia section (59 km west of Bojnourd) with 749 meter thickness is composed of silici-clastic sediments. In this study, based on nanofossils genus Watznaueria britannica and Cyclagelosphaera margerelii that were recorded at 350 and 710 meter above the base of formation revealed that the age of this interval can be Bajocian-.Bathonian. The fragments and feldspar are the most important constituents. Three sandstone petrofacies, including subchertarenite, chertarenite, phylarenite and feldspatic chertarenite, are identified. Modal analysis of sandstones, plotted on QmFLt and QtFL diagrams, show that the sediments of KASHAFRUD FORMATION are located on the recycle orogeny. However, geochemical studies for identification of source rocks revealed these sediments may have been derived from intermediate igneous and sedimentary rocks. CIA Index (chemical weathering), high average Plagioclase index of alteration (PIA), ICV (index for determining the type of mature and immature source rocks) as well as SiO2 versus Al2O3+K2O+Na2O show a warm and semi humid climatic conditions. Using ternary diagram (Na2O+K2O), (TiO2+MgO+Fe2O3), (SiO2/20) is also proved that these sandstones may have been deposited on a passive continental margin setting.

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APA: Copy

SARBAZ, NEDA, MAHBOUBI, ASADOLLAH, MOUSAVI HARAMI, SEYED REZA, KHANEBAD, MOHAMMAD, & MAHANIPOUR, AZAM. (2017). PROVENANCE AND TECTONIC SETTING OF KASHAFRUD FORMATION IN THE NAVIA SECTION (WESTERN BOJNOURD), BASED ON PETROGRAPHY AND GEOCHEMISTRY STUDIES OF SANDSTONES. APPLIED SEDIMENTOLOGY, 4(8), 89-102. SID. https://sid.ir/paper/260566/en

Vancouver: Copy

SARBAZ NEDA, MAHBOUBI ASADOLLAH, MOUSAVI HARAMI SEYED REZA, KHANEBAD MOHAMMAD, MAHANIPOUR AZAM. PROVENANCE AND TECTONIC SETTING OF KASHAFRUD FORMATION IN THE NAVIA SECTION (WESTERN BOJNOURD), BASED ON PETROGRAPHY AND GEOCHEMISTRY STUDIES OF SANDSTONES. APPLIED SEDIMENTOLOGY[Internet]. 2017;4(8):89-102. Available from: https://sid.ir/paper/260566/en

IEEE: Copy

NEDA SARBAZ, ASADOLLAH MAHBOUBI, SEYED REZA MOUSAVI HARAMI, MOHAMMAD KHANEBAD, and AZAM MAHANIPOUR, “PROVENANCE AND TECTONIC SETTING OF KASHAFRUD FORMATION IN THE NAVIA SECTION (WESTERN BOJNOURD), BASED ON PETROGRAPHY AND GEOCHEMISTRY STUDIES OF SANDSTONES,” APPLIED SEDIMENTOLOGY, vol. 4, no. 8, pp. 89–102, 2017, [Online]. Available: https://sid.ir/paper/260566/en

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