The mid- miocene climatic optimum (mmco) manifestation in Iraq : carbon and oxygen isotopes proxies
Joint Authors
Uthman, Arsalan Ahmad
Ali, Mustafa A.
al-Mashaikhi, Sad Zaki
Source
Iraqi Bulletin of Geology and Mining
Issue
Vol. 18, Issue 2 (31 Dec. 2022), pp.1-24, 24 p.
Publisher
Ministry of Industry and Minerals Iraqi Geological Survey
Publication Date
2022-12-31
Country of Publication
Iraq
No. of Pages
24
Main Subjects
Pharmacy, Health & Medical Sciences
Abstract EN
The present paper deals with the variability of the primary isotopic composition of seawater in the shallow water zone.
Sedimentary successions of middle Miocene outcropping in the eastern part of Iraq provide an excellent archive of the oxygen and carbon isotopes.
We analyzed the 8¹³C and 8¹80 to investigate the relationship between the lithostratigraphic units and the deviation of the stable isotopes.
The results show a significant relationship between the depositional energy changes and both 8¹³C and 8¹80 composition.
That displays the details of oxygen isotope events (Mi-events) and additional information about Mi2 and 3 zones, reflecting significant changes in the glaciation period, which have minor steps (interglacial period).
At the same time, carbon isotope maxima (CM-events) reflect changes in organic carbon burial and refine the Monterey Excursion.
Facies analysis revealed several microfacies could be distinguished, reflecting depositional environments including; supratidal and intertidal, lagoon, patch-reef, and open marine environments, matching with their isotopes storage differential, enhancing 13C and high rates of sedimentation in deeper facies.
The stable isotopes (180/160 and 13C/12C) provide an excellent archive of the Neogene (middle Miocene Transgression) 's paleoceanography for the Neo-Tethys.
Oxygen and carbon isotopic stratigraphy for bulk rock were analyzed to distinguish Monterey Event and climate optima.
American Psychological Association (APA)
Ali, Mustafa A.& al-Mashaikhi, Sad Zaki& Uthman, Arsalan Ahmad. 2022. The mid- miocene climatic optimum (mmco) manifestation in Iraq : carbon and oxygen isotopes proxies. Iraqi Bulletin of Geology and Mining،Vol. 18, no. 2, pp.1-24.
https://search.emarefa.net/detail/BIM-1526707
Modern Language Association (MLA)
Ali, Mustafa A.…[et al.]. The mid- miocene climatic optimum (mmco) manifestation in Iraq : carbon and oxygen isotopes proxies. Iraqi Bulletin of Geology and Mining Vol. 18, no. 2 (2022), pp.1-24.
https://search.emarefa.net/detail/BIM-1526707
American Medical Association (AMA)
Ali, Mustafa A.& al-Mashaikhi, Sad Zaki& Uthman, Arsalan Ahmad. The mid- miocene climatic optimum (mmco) manifestation in Iraq : carbon and oxygen isotopes proxies. Iraqi Bulletin of Geology and Mining. 2022. Vol. 18, no. 2, pp.1-24.
https://search.emarefa.net/detail/BIM-1526707
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references : p. 20-24
Record ID
BIM-1526707