List of Articles Zagros

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  1 - Lithostratigraphy and Sedimentary Environment of the Jahrum Formation in two Anticlines of Jahrum and Tudej
  رضا  صادقی محمد حسین  خواجوئی مریم  جوکار
  20.1001.1.22518738.1393.4.8.7.0
  Abstract In this study two stratigraphic sections named Tang-e Ab as type section and Tang-e Nimbashi analyzed in order to study lithostratigraphy and microfacies of Jahrum Formation in Fars province. Both sections, Tang-e Ab in northern flank of Jahrum Anticline (Ea More

  Abstract In this study two stratigraphic sections named Tang-e Ab as type section and Tang-e Nimbashi analyzed in order to study lithostratigraphy and microfacies of Jahrum Formation in Fars province. Both sections, Tang-e Ab in northern flank of Jahrum Anticline (East of Jahrom) and Tang-e Nimbashi in northern flank of Tudej Anticline (West of Estahban) located in Interior Fars Sub-Zone at Zagros folded belt. Tang-e Ab section included 450 meters of conglomerate, limestone, nodular marly limestone, dolomitic limestone and dolostone with thin, medium, thick and very thick bedding and Tang-e Nimbashi section included 562 meters of limestone, marly Limestone, nodular marly limestone, dolomitic limestone and dolostone with very thin, thin, medium, thick and very thick bedding. The result of field and laboratory observations is determination of 10 lithostratigraphic unit and 10 microfacies class in Tang-e Ab and 7 lithostratigraphic unit and 11 microfacies class in Tang-e Nimbashi, in both Sections 3 sub-environments included: open marine, lagoon and peritidal and sedimentary settings corresponded on a carbonate platform of homoclinal ramp. Manuscript profile
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  2 - Biostratigraphy and Microfacies of the Asmari Formation in The Zagros Basin:Age and Environmental Correlation
  تهمینه خانعلی
  20.1001.1.22518738.1391.2.4.3.4
  In this research ,biostratigraphy,microfacies and paleoenvionment of the Asmari Formation in the fars provingce(Tang-e Abolhayat,Naura anticline, south-west of Firozabad,Khormuj anticline),High Zagros(Shoorom anticline), IZeh zone (Mokhtar anticline),Dezfu More

  In this research ,biostratigraphy,microfacies and paleoenvionment of the Asmari Formation in the fars provingce(Tang-e Abolhayat,Naura anticline, south-west of Firozabad,Khormuj anticline),High Zagros(Shoorom anticline), IZeh zone (Mokhtar anticline),Dezful Embayment(Tang-e Anbar sepid, Dill anticline, Khaviz anticline,Aghajari oil field ) and Lurstan province(Mamulan,Sepid-dasht,Dehluran and kabirkuh-Darreshahr0,were reviewed and revised for the comprehensive understanding of age and depositional environments. The Globigerina spp.-Turborotalia cerroazulensis-Hantkenina and Nummulites vascus-Nummulites fichteli assemblage zones (Rupelian) are present in Fars province. The dominated microfacies within the Asmari Formation of the Rupelian time are bioclast planktonic, nummulitidae lepidocyclinidae wackestone-packstone, of an outer and middle ramp depositional setting. The Archaias asmaricus-archaias hensoni-Miogypsinoides complanatus assemblage zone (Chattian)is present in Fars ,High zagros,Izeh and Dezful Embayment provinces. The dominated microfacies within the Asmari Formation of the Chattian time are bioclast perforate-imperforate foraminifera wackestone-packstone and mudstone, of an inner ramp depositional setting . The Miogypsina-Elphidium sp. 14-Peneroplis farsensis assemblage zone(Aquitanian) is present in High Zagros, Izeh ,Dezful Embayment and parts of the Fars and Lurestan provinces.The dominated microfacies within the Asmari Formation of the Aquitanian time are perforate-imperforate foraminifera bioclast wackestone –packstone,grainstone,and mudstone,of an inner ramp depositional setting. The Borelis melo curdica –Borelis melo melo assemblage zone (Burdigalian) is present in most areas. But it slightly occurs in fars province. The microfacies of the Asmari Formation during Burdigalian are similar to those of Aquitanian .In sepid-dasht and Tang-e Anbar Sepid sections due to presence Globigerina spp. Assemblage zone and planktonic forminifera wackestone-packstone facies, an outer ramp depositional setting is also suggested. Manuscript profile
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  3 - Examination of climatic orbital changes and sedimentation rate in the Ilam Formation in the Kupal oilfield, Dezful Embayment
  Forough Abasaghi Armin Omidpour
  20.1001.1.22518738.1401.12.23.3.2
  Carbonate successions are considered archives for recording the palaeoclimatic proxies and so they are suitable for understanding climatic patterns and identifying the Milankovitch cycles and cycles’s impacts on sea-level changes during Phanerozoic. In the current study More

  Carbonate successions are considered archives for recording the palaeoclimatic proxies and so they are suitable for understanding climatic patterns and identifying the Milankovitch cycles and cycles’s impacts on sea-level changes during Phanerozoic. In the current study, the carbonate successions of the Ilam Formation (Santonian) and their spectral gamma-ray data were chosen to identify the cycles and influencing factors on the sedimentation in one of the oilfields in the Dezful Embayment, southwest of Zagros mountains. According to available evidence, all of Milankovitch cycles contributed to changes in climatic conditions simultaneously with development of the Ilam Formation, however, the long Eccentricity cycles were dominant and have played a greater role in this issue. The sedimentation rate was estimated at 4-5.5 cm/kyr on average in the Ilam Formation. Considering the sedimentation rate and number of identified long Eccentricity cycles, it could be said the deposition in the Ilam Formation lasted in 1.13-1.8 Ma. Our results indicate that the relative sea-level changes in the studied wells correspond to the eustatic sea level. The deposition process in the Ilam Formation was largely affected by the performance of long Eccentricity cycles, eustatic sea level, and tectonic events during the Upper Cretaceous. Manuscript profile
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  4 - Lithostratigraphy and Biostratigraphy of Pabdeh Formation based on planktonic foraminifera in the Ilam dam section (south Ilam_ Zagros sedimentari basin)
  somaye taherizade Mohammad Vahidinia Mohammadhossein mahmoudi gharaii
  20.1001.1.22518738.1401.12.24.6.7
  Zagros Sedimentary basin is located in the south and southwest of Iran and Pabdeh Formation is one of the most important Cenozoic units of Zagros Sedimentary basin. In addition, Pabdeh Formation is of special importance as one of the source rocks of Zagros Sedimentary b More

  Zagros Sedimentary basin is located in the south and southwest of Iran and Pabdeh Formation is one of the most important Cenozoic units of Zagros Sedimentary basin. In addition, Pabdeh Formation is of special importance as one of the source rocks of Zagros Sedimentary basin. In order to study the Lithostratigraphic and Biostratigraphic rocks of Pabdeh Formation, the section of Ilam dam in the northwest of Zagros sedimentary basin has been selected and sampled. 360 samples were taken, of which 260 washing samples and 100 thin section samples were prepared. Based on the studies performed on these samples, 25 genera and 105 species have been identified in the Ilam dam section. 26 biozones and 2 sub-biozones have been identified based on the biological zoning of Wade et al., 2011 in the Tethys area. Based on the identified biozones, the age of Pabdeh Formation in the Ilam dam section, Middle Danian-Early Aquitanian has been obtained. The deposits of Pabdeh Formation in the section of Ilam dam have a thickness of 764 m (beginning of Pabdeh to the beginning of Kalhor anhydrite) which includes purple shale units (2 Units), marl limestone with lower limestone, cherti limestone, marl limestone with upper limestone. The lower boundary of Pabdeh Formation in this section is conform and continuous with shales and marls of Gurpi Formation but its upper boundary with the gypsums of the Asmari formation is most likely accompanied by a disconform. Manuscript profile