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    • List of Articles Ali Bahrami

      • Open Access Article

        1 - Biostratigraphy, conodont biofacies and CAI of Late Devonian-Carboniferous deposits in Anarak section, Central Iran
        ٍٍElahe Sattari Ali Bahrami Hosyen Vaziri moghadam Ali Taheri Sandra Isabella  Kaiser Peter Königshof
        Study of Late Devonian-Carboniferous (Mississippian-Pennsylvanian) conodonts Anarak section (NE Isfahan), Central Iran, led to identifying 67 conodont species belonging to 18 genera. 22 conodont bio-intervals were separated; 15 biozones belong to Late Devonian and 7 b More
        Study of Late Devonian-Carboniferous (Mississippian-Pennsylvanian) conodonts Anarak section (NE Isfahan), Central Iran, led to identifying 67 conodont species belonging to 18 genera. 22 conodont bio-intervals were separated; 15 biozones belong to Late Devonian and 7 biozones belong to carboniferous (Mississippian-Pennsylvanian) time interval. Based on field observation and sedimentological featurs and charactristics the section, subdivided into 5 lithostratigrafic unit. The Color Alteration Index (CAI) reveals the hydrocarbure potential for the Famennian stage of the studied interval Manuscript profile
      • Open Access Article

        2 - Microfacies, Sedimentary environment and Sequence stratigraphy of Anarak section (Late Devonian-Early Carboniferous), central Iran
        ٍٍElahe Sattari Hosyen vaziri-Moghadam Ali Bahrami Ali Taheri sandra kaiser Peter Koneigshof
        Anarak section in northeast Isfahan, central Iran is evaluated regarding to sedimentary environment and sequence stratigraphy. Field studies and micro-facies analysis led to the identification of 12 micro-facies related to the open marine, the shoal, the lagoon and the More
        Anarak section in northeast Isfahan, central Iran is evaluated regarding to sedimentary environment and sequence stratigraphy. Field studies and micro-facies analysis led to the identification of 12 micro-facies related to the open marine, the shoal, the lagoon and the tidal flat environments. Micro-facieses gradual change, lack of calciturbidite and lack of expanded barrier reef indicate the deposition of a sedimentary interval in a homoclinal ramp environment. Two type 3 sequences were identified by sequence stratigraphic study. Both of these sequences are separable TST and HST packages. The age of first sequence is Late Devonian (Bahram Formation) and its thickness is 42.3 meters and the second sequence with a thickness of 70.7 meters is Late Devonian-Early Carboniferous (Upper part of Bahram Formation and Shishtu2 Formation). The sequence boundary between first and second sequences is the second type boundary due to the lack of evidence for exposure. Manuscript profile
      • Open Access Article

        3 - Biostratigraphy of Dariyan Formation in Lar Anticline (north east Gachsaran) and Lower Cretaceous sediments in Kolah Ghazi section (South west Isfahan)
        Mahdie Shirzad Hosyen Vaziri moghadam Ali Bahrami
        In order to identify foraminifera and determine the age of Dariyan Formation and the lower Cretaceous sediments of Central Iran, a section of Dariyan Formation in Lar Anticline (northeast Gachsaran) (with a thickness of 111m, thick, medium and thin layer of limestone, m More
        In order to identify foraminifera and determine the age of Dariyan Formation and the lower Cretaceous sediments of Central Iran, a section of Dariyan Formation in Lar Anticline (northeast Gachsaran) (with a thickness of 111m, thick, medium and thin layer of limestone, marl and marly limestone) and Kolah Ghazi section (south west Isfahan) (with a thickness of 260m, thick to medium layer limestone and shale) were studied. Based on biostratigraphic studies of Lar Anticline section, 28 benthonic foraminifera and 4 planktonic foraminifera have been identified in 4 biozones contains: Hedbergellids - Orbitolinids assemblage zone, Mesorbitolina texana zone, Mesorbitolina gr. subconcava zone, Favusella washitensis rang zone. Based on biostratigraphic of Lower Cretaseous sediments in Kuh-e-Kolah Ghazi, 21 benthonic foraminifera and 1 planktonic foraminifera have been identified and consequently 2 biozones are recognized contains: Mesorbitolina texana zone, Mesorbitolina gr. subconcava zonethe studied areas were correlated with some sections of the Dariyan in Kuh-e-Fahliyan, Kuh-e- Mangasht and Meymand. Accordingly, the sedimentation of two studied sections in Lar Anticline and Kuh-e-Kolah Ghazi were started from Late Aptian which were later than the other sections, and the end of sedimentation in the Kuh-e-Kolah Ghazi was earlier than the other sections in the Late Aptian age, while the end of sedimentation of Dariyan Formation in other sections was in Early Albian age Manuscript profile