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Reconstruction of paleo depth and paleo temperature from C- O stable isotope records of Mishrif formation, southern Iraq
Other Title(s)
إعادة استنتاج العمق و الحرارة القديمة من سجل نظائر الأوكسجين و الكاربون المستقرة لتكوين المشرف جنوب العراق
Joint Authors
Taha, Tahir Mahmud
Abd Allah, Inam Jumah
Source
Issue
Vol. 60, Issue 8 (31 Aug. 2019), pp.1730-1742, 13 p.
Publisher
University of Baghdad College of Science
Publication Date
2019-08-31
Country of Publication
Iraq
No. of Pages
13
Main Subjects
Earth Sciences, Water and Environment
Abstract EN
Stable isotopes 18O/16O and 13C/12C in the carbonate rocks of the Mishrif Formation are examined here to define the depositional characters in the basin includes paleo temperatures and paleo depth.
The Mishrif formation (Cenomanian – Early Turonian) has extensive distribution in Iraq and Middle East.
Mishrif Formation composed of organic detrital limestone.
Four boreholes in four oilfields, Noor – well (11), Amarah – well (14), Buzurgan – well (24), Halfaya – well (8), in south east of Iraq have been studied.
The studied samples have negative δ18O isotope values studied well, with Average (-4.11‰), (-4.47‰), (-4.48‰), (-4.18‰) in the studied wells respectively.
Carbon Isotope composition positive values in the study samples, with average (2.32‰), (1.84‰), (2.20‰), (2.24‰) are studied well respectively.
The Stable isotope (18O/16O and 13C/12C) of Mishrif Formation provide the first records of paleotemperature for the (Cenomanian – Early turanian ) which indicate moderate during deposition.
The plot of depositional environment refers to warm water carbonate sediment and the bulk samples cluster tightly to small positive reflect modal isotope composition of dominant skeletal marine carbonate.
The paleo-salinity (Z values) provide the marine deposits in studied samples.
As the paleo-temperature was high temperature by (T values).
The paleo depth he all studied samples in the four oilfields are fall in the same level which is in the upper part of Thermocline this indicate the moderate depth
American Psychological Association (APA)
Taha, Tahir Mahmud& Abd Allah, Inam Jumah. 2019. Reconstruction of paleo depth and paleo temperature from C- O stable isotope records of Mishrif formation, southern Iraq. Iraqi Journal of Science،Vol. 60, no. 8, pp.1730-1742.
https://search.emarefa.net/detail/BIM-969443
Modern Language Association (MLA)
Taha, Tahir Mahmud& Abd Allah, Inam Jumah. Reconstruction of paleo depth and paleo temperature from C- O stable isotope records of Mishrif formation, southern Iraq. Iraqi Journal of Science Vol. 60, no. 8 (2019), pp.1730-1742.
https://search.emarefa.net/detail/BIM-969443
American Medical Association (AMA)
Taha, Tahir Mahmud& Abd Allah, Inam Jumah. Reconstruction of paleo depth and paleo temperature from C- O stable isotope records of Mishrif formation, southern Iraq. Iraqi Journal of Science. 2019. Vol. 60, no. 8, pp.1730-1742.
https://search.emarefa.net/detail/BIM-969443
Data Type
Journal Articles
Language
English
Notes
Text in English ; abstracts in English and Arabic.
Record ID
BIM-969443