Biostratigraphy and lithostratigraphy of Late Cretaceous sequences in Maracan Section, North of Khoy, North West of Iran

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MOHAMMADI M.; SHABANIAN R.; ALIZADEH H.M.

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Journal: GEOSCIENCES Year:2020 | Volume:29 | Issue:114 Page(s): 51-60

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Title

Biostratigraphy and lithostratigraphy of Late Cretaceous sequences in Maracan Section, North of Khoy, North West of Iran

Author(s)

MOHAMMADI M. | SHABANIAN R. | ALIZADEH H.M. | Issue Writer Certificate

Keywords

BiostratigraphyQ1

LithostratigraphyQ2

Late CretaceousQ1

MaracanQ2

Planktonic ForaminiferaQ1

BiozonationQ2

Abstract

This research has aimed to study the biostrtigraphy and Lithostratigraphy of Late Cretaceous deposits in south of Maracan village, with 320 m thickness. This sequence overlaid the lower cretaceous deposits and have been covered by Quaternary sedimentary and magmatic rocks. Based on field study and lithological diversity 8 lithic zone have been investigated. 102 samples have been picked up systematically from this sequence. This study lead to determining 41 species from 15 genera of Planktonic Foraminifera. The systematic and classification of fauna are based on The (Postuma 1971), (Caron1985), (Loeblich and Tappan 1988) and (Permoli Silva And Verga 2004). Based on their range chart the Biozonation model for this deposit with 9 Bio Zones as bellow have been suggested and have compared with cretaceous global standard bio zones (Robazynsky and Caron 1985) and (Permoli Silva and Verga, 2004): Dicarinella concavata Interval Zone (Robazynsky and Caron, 1995); Dicarinella asymetrica Total range Zone (Robazynsky and Caron, 1995); Globotruncanita elevata Interval range Zone (Robazynsky and Caron, 1995); Globotruncana ventricosa Interval Zone (Robazynsky and Caron, 1995); Rodotruncana calcarata Total range Zone (Robazynsky and Caron, 1995); Globotruncanella havnensis Partial Range Zone (Robaszynski and Caron, 1985); Globotruncana aegyptiaca Interval Zone (Robazynsky and Caron, 1995); Gansserina gansseri Interval Zone (Robazynsky and Caron, 1995); Abathamphalus mayaroensis Total range Zone (Robazynsky and Caron, 1995). The suggested age for this sequence based on Planktonic Foraminifera is upper coniantian to upper Maestrichtian and belong to deep shelf area. Based on the morphology of Planktonic Foraminifera and their keei we suggest deep sea environment for these deposits.

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APA: Copy

MOHAMMADI, M., SHABANIAN, R., & ALIZADEH, H.M.. (2020). Biostratigraphy and lithostratigraphy of Late Cretaceous sequences in Maracan Section, North of Khoy, North West of Iran. GEOSCIENCES, 29(114 ), 51-60. SID. https://sid.ir/paper/31520/en

Vancouver: Copy

MOHAMMADI M., SHABANIAN R., ALIZADEH H.M.. Biostratigraphy and lithostratigraphy of Late Cretaceous sequences in Maracan Section, North of Khoy, North West of Iran. GEOSCIENCES[Internet]. 2020;29(114 ):51-60. Available from: https://sid.ir/paper/31520/en

IEEE: Copy

M. MOHAMMADI, R. SHABANIAN, and H.M. ALIZADEH, “Biostratigraphy and lithostratigraphy of Late Cretaceous sequences in Maracan Section, North of Khoy, North West of Iran,” GEOSCIENCES, vol. 29, no. 114 , pp. 51–60, 2020, [Online]. Available: https://sid.ir/paper/31520/en

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