CYCLOSTRATIGRAPHY OF AB-DERAZ FORMATION IN EAST KOPET-DAGH BASIN AND INFLUENCE OF MILANKOVITCH CYCLES

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FATEH BAHARI L.; MAHMOUDI GHARAEI M.H.; MAHBOUBI A.; MOUSSAVI HARAMI R.

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Journal: GEOSCIENCES Year:2010 | Volume:20 | Issue:77 Page(s): 57-62

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Title

CYCLOSTRATIGRAPHY OF AB-DERAZ FORMATION IN EAST KOPET-DAGH BASIN AND INFLUENCE OF MILANKOVITCH CYCLES

Author(s)

FATEH BAHARI L. | MAHMOUDI GHARAEI M.H. | MAHBOUBI A. | MOUSSAVI HARAMI R. | Issue Writer Certificate

Keywords

AB-DERAZ FORMATIONQ3

CYCLOSTRATIGRAPHYQ3

MILANKOVITCH CYCLESQ3

Abstract

AB-DERAZ FORMATION (Turonian to Santonian) is a marly-Carbonates sequence consists of three marl-chalky limestones intervals. This formation widely crops out in Kopet-Dagh Basin in NE of Iran. Chalk and calcareous marl couplets show decimeter to meter scale cycles. Carbonate content of chalky beds are 80-95% in rhythmic couplets, and about 65-80% in calcareous marly beds. The AB-DERAZ FORMATION is studied in tow Hamam-Ghale and Padeha outcrops, and also in well No.56 of Khangiran. Three dominate frequency of sediments are identified based on gamma ray log, which are related to three type of MILANKOVITCH CYCLES including the long eccentricity (413 ka), eccentricity (100 ka) and precession (21-23 ka) cycles. Biostratigraphic age determination based on foraminifera is comparable with orbital chronology calculated by on eeccentricity cycles counting. These cycles are also correlated with carbonate contents in studied sections.

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APA: Copy

FATEH BAHARI, L., MAHMOUDI GHARAEI, M.H., MAHBOUBI, A., & MOUSSAVI HARAMI, R.. (2010). CYCLOSTRATIGRAPHY OF AB-DERAZ FORMATION IN EAST KOPET-DAGH BASIN AND INFLUENCE OF MILANKOVITCH CYCLES. GEOSCIENCES, 20(77), 57-62. SID. https://sid.ir/paper/32298/en

Vancouver: Copy

FATEH BAHARI L., MAHMOUDI GHARAEI M.H., MAHBOUBI A., MOUSSAVI HARAMI R.. CYCLOSTRATIGRAPHY OF AB-DERAZ FORMATION IN EAST KOPET-DAGH BASIN AND INFLUENCE OF MILANKOVITCH CYCLES. GEOSCIENCES[Internet]. 2010;20(77):57-62. Available from: https://sid.ir/paper/32298/en

IEEE: Copy

L. FATEH BAHARI, M.H. MAHMOUDI GHARAEI, A. MAHBOUBI, and R. MOUSSAVI HARAMI, “CYCLOSTRATIGRAPHY OF AB-DERAZ FORMATION IN EAST KOPET-DAGH BASIN AND INFLUENCE OF MILANKOVITCH CYCLES,” GEOSCIENCES, vol. 20, no. 77, pp. 57–62, 2010, [Online]. Available: https://sid.ir/paper/32298/en

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