PALAEOBATHYMETRY OF THE SARVAK FORMATION IN WELL AZ 354 OF AHWAZ OIL FIELD BASED ON FORAMINIFERA

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KAZEMZADEH M.H.; GHASEMI NEJAD E.; VAZIRI MOGHADDAM H.

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Journal: GEOSCIENCES Year:2015 | Volume:24 | Issue:94 (STRATIGRAPHY & SEDIMENTOLOGY) Page(s): 81-90

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Title

PALAEOBATHYMETRY OF THE SARVAK FORMATION IN WELL AZ 354 OF AHWAZ OIL FIELD BASED ON FORAMINIFERA

Author(s)

KAZEMZADEH M.H. | GHASEMI NEJAD E. | VAZIRI MOGHADDAM H. | Issue Writer Certificate

Keywords

PALAEOBATHYMETRYQ2

FORAMINIFERAQ2

SARVAK FORMATIONQ2

AHWAZ OIL FIELDQ1

Abstract

The SARVAK FORMATION in Well AZ 354 of AHWAZ OIL FIELD attains a thickness of 1712 meters and contains creamy to white and occasionally gray limestone. The recorded FORAMINIFERA indicate upper Albian to lower Turonian age for this formation. In order to study pale obathymetry and sea level changes during depositional course of the formation, three common methods were used: in the first method, the absolute number of benthic FORAMINIFERA and percentage of Hyaline, Agglutinate and Porcelaneous tests and their ratio were determined. In the second method, the ratio of Planktonic FORAMINIFERA to Epifaunal benthic FORAMINIFERA was determined via using Van der Zwaan equation, Depth= e (3.58718+(0.03534´%P), the obtained average depth was 130 meters for the most parts of the formation. In the third method, the morph otypes of planktonic FORAMINIFERA were used for determination of depth. Based on this method for the lower and middle parts, first and second morph otype groups (shallow areas indices) are abundant, showing a shallow sea. For the upper part the third morph otype groups (deeper areas indices) are abundant, indicating an open marine environment. The results showed that generally, the major parts of the SARVAK FORMATION has been deposited in a neritic environment and in the upper parts, depositional environment turned into a deeper one and reached the upper bathyal depths (340 m).

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APA: Copy

KAZEMZADEH, M.H., GHASEMI NEJAD, E., & VAZIRI MOGHADDAM, H.. (2015). PALAEOBATHYMETRY OF THE SARVAK FORMATION IN WELL AZ 354 OF AHWAZ OIL FIELD BASED ON FORAMINIFERA. GEOSCIENCES, 24(94 (STRATIGRAPHY & SEDIMENTOLOGY)), 81-90. SID. https://sid.ir/paper/32176/en

Vancouver: Copy

KAZEMZADEH M.H., GHASEMI NEJAD E., VAZIRI MOGHADDAM H.. PALAEOBATHYMETRY OF THE SARVAK FORMATION IN WELL AZ 354 OF AHWAZ OIL FIELD BASED ON FORAMINIFERA. GEOSCIENCES[Internet]. 2015;24(94 (STRATIGRAPHY & SEDIMENTOLOGY)):81-90. Available from: https://sid.ir/paper/32176/en

IEEE: Copy

M.H. KAZEMZADEH, E. GHASEMI NEJAD, and H. VAZIRI MOGHADDAM, “PALAEOBATHYMETRY OF THE SARVAK FORMATION IN WELL AZ 354 OF AHWAZ OIL FIELD BASED ON FORAMINIFERA,” GEOSCIENCES, vol. 24, no. 94 (STRATIGRAPHY & SEDIMENTOLOGY), pp. 81–90, 2015, [Online]. Available: https://sid.ir/paper/32176/en

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