THE ANALOGY OF DIAGENETIC PROCESSES AND THEIR AFFECTS ON PETROGRAPHY AND GEOCHEMISTRY OF THE DALAN UPPER MEMBER IN SURMEH MOUNTAIN SECTION AND ONE OF THE PERSIAN GULF OILFIELDS

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PARHAM SOMAYEH; KAMALI MOHAMMAD REZA; FAYYAZI FARAJOLLAH

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Journal: GEOCHEMISTRY Year:2015 | Volume:3 | Issue:4 Page(s): 287-300

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Title

THE ANALOGY OF DIAGENETIC PROCESSES AND THEIR AFFECTS ON PETROGRAPHY AND GEOCHEMISTRY OF THE DALAN UPPER MEMBER IN SURMEH MOUNTAIN SECTION AND ONE OF THE PERSIAN GULF OILFIELDS

Author(s)

PARHAM SOMAYEH | KAMALI MOHAMMAD REZA | FAYYAZI FARAJOLLAH | Issue Writer Certificate

Keywords

DIAGENESISQ2

GEOCHEMISTRYQ2

PERSIAN GULFQ2

SURMEH MOUNTAINQ2

Abstract

The Dalan Upper Member is one of the most important gas reservoirs in the Zagros basin and PERSIAN GULF. This research is focused on the analogy of diagenetic processes affecting on this member in the surface section of this member in SURMEH MOUNTAIN section and a subsurface section in the PERSIAN GULF. The paragenetic sequences and diagenetic history of surface and subsurface sections are compared to each other and the effect of DIAGENESIS on the GEOCHEMISTRY of dolomites has been investigated. This investigation revealed that the Dalan Upper Member has different diagenetic history in these two sections. Petrographic evidences revealed that subsurface section was affected by marine diagenetic processes. Some parts like oolitic shoal subareally was exposed and affected by meteoric environ ment and then placed into burial environment. Evidences of marine DIAGENESIS have been identified in surface samples. Stylolites, saddle dolomite, fracturing, coarse spary calcite cement and silicification indicate that this member was affected by burial diagenetic processes. Then as a result of uplifting, Dalan upper member exposed in meteoric environment. Study and analogous of major elements of these dolomites in surface and subsurface sample revealed remarkable impact of meteoric DIAGENESIS. The surface sample shows higher content of Na and Sr because of low partition coefficient of these elements and low concentration in meteoric water. Since concentration of Fe and Mn in meteoric water is high and their partition coefficients are higher than 1 (e.g.>15 for Mn), the diagenetic products have higher content of these elements.

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APA: Copy

PARHAM, SOMAYEH, KAMALI, MOHAMMAD REZA, & FAYYAZI, FARAJOLLAH. (2015). THE ANALOGY OF DIAGENETIC PROCESSES AND THEIR AFFECTS ON PETROGRAPHY AND GEOCHEMISTRY OF THE DALAN UPPER MEMBER IN SURMEH MOUNTAIN SECTION AND ONE OF THE PERSIAN GULF OILFIELDS. GEOCHEMISTRY, 3(4), 287-300. SID. https://sid.ir/paper/230891/en

Vancouver: Copy

PARHAM SOMAYEH, KAMALI MOHAMMAD REZA, FAYYAZI FARAJOLLAH. THE ANALOGY OF DIAGENETIC PROCESSES AND THEIR AFFECTS ON PETROGRAPHY AND GEOCHEMISTRY OF THE DALAN UPPER MEMBER IN SURMEH MOUNTAIN SECTION AND ONE OF THE PERSIAN GULF OILFIELDS. GEOCHEMISTRY[Internet]. 2015;3(4):287-300. Available from: https://sid.ir/paper/230891/en

IEEE: Copy

SOMAYEH PARHAM, MOHAMMAD REZA KAMALI, and FARAJOLLAH FAYYAZI, “THE ANALOGY OF DIAGENETIC PROCESSES AND THEIR AFFECTS ON PETROGRAPHY AND GEOCHEMISTRY OF THE DALAN UPPER MEMBER IN SURMEH MOUNTAIN SECTION AND ONE OF THE PERSIAN GULF OILFIELDS,” GEOCHEMISTRY, vol. 3, no. 4, pp. 287–300, 2015, [Online]. Available: https://sid.ir/paper/230891/en

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