Sedimentary environment, sequence stratigraphy, diagenesis and geochemistry of the carbonate Ruteh Formation in north of Mahabad section

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Mohammadi Moghaddas Youssef; MAHARI RAHIM; Shabanian Rahim; NAJAFZADEH ADEL

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Journal: JOURNAL OF STRATIGRAPHY AND SEDIMENTOLOGY RESEARCHES Year:2019 | Volume:35 | Issue:2 (75) Page(s): 73-108

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Title

Sedimentary environment, sequence stratigraphy, diagenesis and geochemistry of the carbonate Ruteh Formation in north of Mahabad section

Author(s)

Mohammadi Moghaddas Youssef | MAHARI RAHIM | Shabanian Rahim | NAJAFZADEH ADEL | Issue Writer Certificate

Keywords

Ruteh FormationQ2

Sequence stratigraphyQ2

DiagenesisQ2

Sedimentary environmentQ2

MahabadQ1

Abstract

The Ruteh Formation is the second sedimentary cycle in Alborz basin. The petrography and laboratory studies of these deposits led to the identification of 15 microfacies which were deposited in seven sub-environments including supratidal, intertidal, lagoon, shoal, open marine, middle ramp, and outer ramp. Since there were no turbidity deposits, the lack of marginal reef belt and the gradual changes of facies, it turned out that these sediments were deposited in a homoclinal carbonate ramp. The study of relative sea level changes was done according to vertical distribution of facies and their stacking patterns. These studies lead to identification of four depositional sequences. The petrography data and geochemical analyzes were used in order to identify the diagenetic processes and geochemical changes. The recognized Diagenesis processes include micritization, cementation, compaction, stylolitization, silicification, ferrugenation and neomorphysm. These diagenetic processes took place in three diagenetic environments: marine-phreatic, meteoric-phreatic and burial. Geochemical analyzes confirms that the carbonate sediments of Ruteh Formation were originally composed of aragonite, which was eventually recrystallized to calcite during Diagenesis. Plotting Sr/Ca versus Mn diagram approved that sediments was subjected to a meteoric Diagenesis in a semi-closed to open diagenetic system. The results of this research can be used to provide a sedimentary model for these deposits which completes the palaeogeographical data for the Tethys Ocean.

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APA: Copy

Mohammadi Moghaddas, Youssef, MAHARI, RAHIM, Shabanian, Rahim, & NAJAFZADEH, ADEL. (2019). Sedimentary environment, sequence stratigraphy, diagenesis and geochemistry of the carbonate Ruteh Formation in north of Mahabad section. JOURNAL OF STRATIGRAPHY AND SEDIMENTOLOGY RESEARCHES, 35(2 (75) ), 73-108. SID. https://sid.ir/paper/157024/en

Vancouver: Copy

Mohammadi Moghaddas Youssef, MAHARI RAHIM, Shabanian Rahim, NAJAFZADEH ADEL. Sedimentary environment, sequence stratigraphy, diagenesis and geochemistry of the carbonate Ruteh Formation in north of Mahabad section. JOURNAL OF STRATIGRAPHY AND SEDIMENTOLOGY RESEARCHES[Internet]. 2019;35(2 (75) ):73-108. Available from: https://sid.ir/paper/157024/en

IEEE: Copy

Youssef Mohammadi Moghaddas, RAHIM MAHARI, Rahim Shabanian, and ADEL NAJAFZADEH, “Sedimentary environment, sequence stratigraphy, diagenesis and geochemistry of the carbonate Ruteh Formation in north of Mahabad section,” JOURNAL OF STRATIGRAPHY AND SEDIMENTOLOGY RESEARCHES, vol. 35, no. 2 (75) , pp. 73–108, 2019, [Online]. Available: https://sid.ir/paper/157024/en

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