Determining the deposits attributed to the Gurpi Formation based on the calcareous nannofossil located in SW Borojen, Chahar-Mahal and Bakhtiyari provinces

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SENEMARI S.; FOROUGHI F.

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Journal: Iranian Journal of Geology Year:2019 | Volume:13 | Issue:50 Page(s): 1-14

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Title

Determining the deposits attributed to the Gurpi Formation based on the calcareous nannofossil located in SW Borojen, Chahar-Mahal and Bakhtiyari provinces

Author(s)

SENEMARI S. | FOROUGHI F. | Issue Writer Certificate

Keywords

Calcareous nannofossilsQ1

Bio-zoneQ1

ZagrosQ2

GurpiQ2

TarburQ1

Abstract

Calcareous nannofossils are useful in determining the relative age of the Cretaceous strata. In this study, the Gurpi Formation with a thickness of 445 m at the Kuh-e Sabz syncline located in southwest of Borojen city is investigated based on the Calcareous nannofossils. As a result of this study, 20 genera and 37 species of calcareous nannofossil were identified. Based on distribution of these index Calcareous nannofossils, seven Bio-zones were recognized including: Calculites obscurus Zone (CC17/ late Santonian-early Campanian), Aspidolithus parcus Zone (CC18/ early Campanian), Calculites ovalis Zone (CC19/ late Early Campanian), Ceratolithoides aculeus Zone (CC20/ late Early Campanian), Quadrum sissinghii Zone (CC21/ early Late Campanian), Quadrum trifidum Zone (CC22/ late Late Campanian) and Tranolithus phacelosus Zone (CC23/ latest Campanian– early Maastrichtian), that corresponding to upper part of NC17-NC20 and UC13-UC17. Based on the identified zones, the age of the studied intervals is Late Santonian/Early Campanian to latest Campanian/early Maastrichtian. The study of the Gurpi Formation in the Kuh-e Sabz syncline, shows that the sedimentation began at the Late Santonian/Early Campanian time and continued up to the latest Campanian/early Maastrichtian. Then, with a sudden drop in the depth of sedimentary basin, the Tarbur Formation gradually deposited on the top of the Gurpi Formation.

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APA: Copy

SENEMARI, S., & FOROUGHI, F.. (2019). Determining the deposits attributed to the Gurpi Formation based on the calcareous nannofossil located in SW Borojen, Chahar-Mahal and Bakhtiyari provinces. IRANIAN JOURNAL OF GEOLOGY, 13(50 ), 1-14. SID. https://sid.ir/paper/129450/en

Vancouver: Copy

SENEMARI S., FOROUGHI F.. Determining the deposits attributed to the Gurpi Formation based on the calcareous nannofossil located in SW Borojen, Chahar-Mahal and Bakhtiyari provinces. IRANIAN JOURNAL OF GEOLOGY[Internet]. 2019;13(50 ):1-14. Available from: https://sid.ir/paper/129450/en

IEEE: Copy

S. SENEMARI, and F. FOROUGHI, “Determining the deposits attributed to the Gurpi Formation based on the calcareous nannofossil located in SW Borojen, Chahar-Mahal and Bakhtiyari provinces,” IRANIAN JOURNAL OF GEOLOGY, vol. 13, no. 50 , pp. 1–14, 2019, [Online]. Available: https://sid.ir/paper/129450/en

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