FORAMINIFERAL BIOSTRATIGRAPHY OF THE GURPI AND ILAM FORMATIONS IN EAST OF KANGAN PORT AND IVAN WELL IN PERSIAN GULF

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DANESHIAN J.; BAGHBANI D.; KHOSROW TEHRANI KH.; FAZLI L.

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Journal: GEOSCIENCES Year:2010 | Volume:19 | Issue:74 Page(s): 157-162

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Title

FORAMINIFERAL BIOSTRATIGRAPHY OF THE GURPI AND ILAM FORMATIONS IN EAST OF KANGAN PORT AND IVAN WELL IN PERSIAN GULF

Author(s)

DANESHIAN J. | BAGHBANI D. | KHOSROW TEHRANI KH. | FAZLI L. | Issue Writer Certificate

Keywords

ILAM FORMATIONQ2

GURPI FORMATIONQ2

PERSIAN GULFQ2

ASSALUYEHQ3

BIOSTRATIGRAPHYQ2

FORAMINIFERAQ2

Abstract

In this study, FORAMINIFERA of the Ilam and GURPI FORMATIONs, from Kuh-e- ASSALUYEH section in east Kangan port in Boushehr province and Ivan well in PERSIAN GULF are investigated. ILAM FORMATION in Kuh-e-Assaluyeh section with 30 meter thickness and Ivan well with 68 meter thickness composed of limestone and dolomitic limestone. The ILAM FORMATION in the study sections overlies unconformable the Sarvak Formation and underlies the GURPI FORMATION. The GURPI FORMATION in Kuh-e-Assaluyeh with 73 meter thickness and Ivan well with 56 meter thickness composed of argillaceous limestone, sandy limestone, shale and limestone. Also the GURPI FORMATION in Kuh-e-Assaluyeh section and Ivan well overlies unconformable the ILAM FORMATION and underlies the Pabdeh Formation. The study of 70 samples from the examined section led to the identification of 13 genera and 19 species of planktonic FORAMINIFERA and 12 genera and 12 species of benthonic FORAMINIFERA. Planktonic FORAMINIFERA are as follow: Heterohelix globolusa, Macroglobigerinelloides ultramicrus, Globotruncanita elevata, Globotruncana bulloides, Globotruncana ventricosa, Muricohedbergella holmdelensis, Heterohelix striata, Macroglobigerinelloides prairiehillensis, Contusotruncana fornicata, spiropelecta sp., Rugoglobigerina rugosa Macroglobigerinelloides bollii, Muricohedbergella monmouthensis, Globotruncana falsostuarti, Gansserina gansseri, Archaeoglobigerina blowi, Globotruncana arca, Contusotruncana contusa, and benthonic FORAMINIFERA are as follow: Rotalia sp., Rotalia skourensis, Pseudedomia sp., Minouxia sp., Dicyclina schlumbergeri, Quinqueloculina sp., Marssonella sp., Gavelinela sp., Archaecyclus midorientalis, Ammobaculites sp. On the basis of stratigraphic distribution of index FORAMINIFERA, the ILAM FORMATION belongs to Santonian to Campanian, and the GURPI FORMATION in Kuh-e-Assaluyeh section is Campanian to Maastrichtian and in Ivan well is Maastrichtian in age. The studies in Kuh-e-Assaluyeh section let to recognition four FORAMINIFERA zone from base to top: Globotruncanita elevata Zone, Globotruncana ventricosa Zone, Globotruncana falsostuarti Zone, Gansserina gansseri Zone. Lacking the main elements of Globotruncanella havanensis and Globotruncana aegyptiaca biozones caused that Globotruncana falsostuarti biozone is introduced on the basis of the first occurances of Globotruncana falsostuarti (at the base) and Gansserina gansseri (at the top). Also in Ivan well, Globotruncana falsostuarti Zone, Gansserina gansseri Zone, Contusotruncana contusa Zone were identified. Abathomphalus mayaroensis in absent at Ivan well and Kuh-e-Assaluyeh. Thus, Abathomphalus mayaroensis biozone is not recognizable, and instead of it Contusoutruncana contusa biozone is introduced. The boundaries of this biozone are identified by the first and last occurrences of Contusoutruncana contuse. Also comparison this study with Biozonation of Wynd, (1965), from base to top: 1- Rotalia sp. 22, Algae assemblage zone, 2- Archaecyclus midorientalis-Pseudedomia sp. assemblage zone, 3- Globotruncanita elevata zone, 4- Globotruncanita stuarti-Pseudotextularia variance assemblage zone. 5- Contusoutruncana contusa zone.

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مطالعه بیواستراتیگرافی سازند گورپی در شمال میدان لالی (خوزستان)

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APA: Copy

DANESHIAN, J., BAGHBANI, D., KHOSROW TEHRANI, KH., & FAZLI, L.. (2010). FORAMINIFERAL BIOSTRATIGRAPHY OF THE GURPI AND ILAM FORMATIONS IN EAST OF KANGAN PORT AND IVAN WELL IN PERSIAN GULF. GEOSCIENCES, 19(74), 157-162. SID. https://sid.ir/paper/31644/en

Vancouver: Copy

DANESHIAN J., BAGHBANI D., KHOSROW TEHRANI KH., FAZLI L.. FORAMINIFERAL BIOSTRATIGRAPHY OF THE GURPI AND ILAM FORMATIONS IN EAST OF KANGAN PORT AND IVAN WELL IN PERSIAN GULF. GEOSCIENCES[Internet]. 2010;19(74):157-162. Available from: https://sid.ir/paper/31644/en

IEEE: Copy

J. DANESHIAN, D. BAGHBANI, KH. KHOSROW TEHRANI, and L. FAZLI, “FORAMINIFERAL BIOSTRATIGRAPHY OF THE GURPI AND ILAM FORMATIONS IN EAST OF KANGAN PORT AND IVAN WELL IN PERSIAN GULF,” GEOSCIENCES, vol. 19, no. 74, pp. 157–162, 2010, [Online]. Available: https://sid.ir/paper/31644/en

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