List of Articles Depositional environment

• Open Access Article
  • Abstract Page
  • Full-Text
  
  1 - Geological and engineering geological characteristics of surface alluviums in the Gorgan city
  Rasool Yazarloo ماشالله خامه چیان محمدرضا نیکودل
  10.30495/ijes.2022.690880
  Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  2 - Sedimentary environment and sequence stratigraphy of the upper devonian rocks in Zefreh area (eastern section) northeast of Isfahan
  Elham Ghaffari Vachik Hairapetian Sayed Hassan Hejazi
  In order to determination of facies, depositional environment and sequence stratigraphy of carbonate andsiliciclastic sedimentary sequences of upper devonian succession of Kuh-e-Zard (eastern profil) with 378mthickness, field and microscopic studies were performed. Faci More

  In order to determination of facies, depositional environment and sequence stratigraphy of carbonate andsiliciclastic sedimentary sequences of upper devonian succession of Kuh-e-Zard (eastern profil) with 378mthickness, field and microscopic studies were performed. Facies analysis and petrographic studies led to therecognition of three silisiclastic facies (sandstone, shale and siltstone), two hybrid subfacies (sandstone micriticand allochemic sandstone) and seventeen carbonate facies were identified. The latter includes lime mudstone andintraclast packstone (representing peritidal environment), wackstone/packstone with molluscs and lime mudstone(representing lagoon environment), ooid grainstone with superfical ooid and intraclast and bioclastic packstonewith a few dominant skeletal grains (representing shoal environment) wackstone/ packstone with brachiopods,echinoderm and ooids and wackstone with intraclast and oncolith and lime mudstone (representing restrictedmarine environment), peloidal wackstone/packstone, floatstone, grainstone/ rudestone with various bioclasts,boundstone, bioclastic packstone with abundant echinoderms and brachiopods and lime mudstone (representingopen marine environment) and wackstone with bioclast and limestone conglomerate (representing mid rampenvironment). Lateral and ramp subenvironment vertical variation of facies show that these deposits wereformed on a homoclinal ramp. Sequence stratigraphical studies of the section revealed four 3rd order cycles. Adeepening trend in an ascendig order, sparring frasnian to lower famennian was recorded. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  3 - Facies analysis and depositional history of Mozduran formation in Saleh-Abad section, Kopet-dagh basin, NE Iran
  Hamidreza Azami Mehdi Reza Poor Soltani Mohsen Allameh
  This is 165 m thick Mozduran formation, as a carbonate and siliciclastic strata, in Saleh-Abad section, consistsof carbonate, sandy lime and siliciclastic rocks. Mozduran Formation relates to (Oxfordian-Kimmeridgian) age,locates conformably on Kashafrud and beneath Shou More

  This is 165 m thick Mozduran formation, as a carbonate and siliciclastic strata, in Saleh-Abad section, consistsof carbonate, sandy lime and siliciclastic rocks. Mozduran Formation relates to (Oxfordian-Kimmeridgian) age,locates conformably on Kashafrud and beneath Shourijeh Formation. The purposes of this study are: 1.The studyof vertical and lateral changes in litho strata units, 2. identification, detachment and naming microscopic faciesbased on thin section, 3.The explain ton of digenetic events based on petrography events, 4.The explanationsedimentation history with using lithofacies properties and presentation the sedimentation model. Based onpetrographic studies of 50 thin sections and two facies collection have been recognized. The Limestone faciescollection consists of bioclastic grainstone pessessy Milliolidae (facies A, a lagoonal environment), sandy ooidgrainstone, Bioclactic ooid grainstone, ooid grainstone with bioclast (facies B, a barrier environment), andTerrigeneous facies collection which is mainly composed of chert arenite and sublitarenite (facies C, a tidal flatenvironment). According to lithofacies, Mozduran Formation depositional environment could be interpreted as acarbonate plat form. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  4 - Microfacies and sedimentary environment of the Asmari Formation in Rag-e-safid oil field, south west Khouzestan
  Nabi Allah Bidarvand Nader Kohansal ghadimvand Davood Jahani
  Asmari Formation (oligo-Miocene) is the most important reservoir unit in south west of Iran oil Fields. The Rage-Safid oil field is one of them. This field is located in Dezful Embayment. In several studies, there are still someuncertainty about microfacieses and deposi More

  Asmari Formation (oligo-Miocene) is the most important reservoir unit in south west of Iran oil Fields. The Rage-Safid oil field is one of them. This field is located in Dezful Embayment. In several studies, there are still someuncertainty about microfacieses and depositional environment of the Asmari formation in Rag-e-safid oil field.There for according to petrographical study of thin sections supplied of cores and cutting samples (2138 thinsections with 7 wells) and comparison of associated constituent facieses with standard microfacies types ofcarbonate ramps of Flugel (Flugel, 2004) and facies belts of Buxton and Pedley (Buxton and Pedley, 1989), 13carbonate microfacieses and 2 non carbonate microfacieses is investigated. The microfacieses are in five groupfacieses (depositional sub environment) that consist of open marine (group O), shoal or bar (group B), lagoon(group L), intertidal (group I) and supratidal (group S). The sub environment ascribed to a carbonate platformramp. Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  5 - Microfacies, depositional environment and sequence stratigraphy of the Dariyan Formation in the north of Shiraz
  Davood Jahani mazyar nazarian darioush baghbani
  The Dariyan Formation (Aptian- Albian) is one of the important hydrocarbon reservoirs in theSW of Iran. In this investigation, microfacies, depositional environment and sequence stratigraphyof the Dariyan Formation have been studied in the Sivand and Dashtak anticlines More

  The Dariyan Formation (Aptian- Albian) is one of the important hydrocarbon reservoirs in theSW of Iran. In this investigation, microfacies, depositional environment and sequence stratigraphyof the Dariyan Formation have been studied in the Sivand and Dashtak anticlines in the north ofShiraz. The thickness of the Dariyan Formation in the Sivand section is 330 meters and in theDashtak section is 263 meters. It mainly consists of limestone and shale interbeds. The lowercontact of the Dariyan Formation with the Gadvan Formation is gradational and the upper contactwith the Kazhdumi Formation is disconformity. Field and microscopic studies of the DariyanFormation have led to recognition of 3 groups and 11 microfacies related to open marine, barrierand lagoon environments. These facies groups were formed in a rimmed shelf carbonate platform.Vertical facies variations indicate the presence of one 3rd sequence. The lower part of TST is in theGadvan Formation and the upper boundary of HST with Kazhdumi Formation is SB1 Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  6 - Depositional environment and sequence stratigraphy of the Fahliyan Formation: surface sections of Bidkhon and Khartang and subsurface sections of Nar-2 and west Aghar
  Sara Maleki Khosro Khosrowtehrani Hossein Asilian Yagob Lasemi
  Manuscript profile
• Open Access Article
  • Abstract Page
  • Full-Text
  
  7 - Biostratigraphy,Paleoecology and Depositional environment of Asmari Formation in oil field of Pazanan
  پروانه روزبهانی
  Abstract Biostratigraphy and Paleoecology and depositional environments of Asmari Formation were studied in oil field of Pazanan (well No.121) .On base of studied done, the thickness of Asmari Formation is 334 meter and based on associated index benthic foraminifera More

  Abstract Biostratigraphy and Paleoecology and depositional environments of Asmari Formation were studied in oil field of Pazanan (well No.121) .On base of studied done, the thickness of Asmari Formation is 334 meter and based on associated index benthic foraminifera three biozones have been selected that indicating a Late Oligocene (Chattian) to Early Miocene (Burdigalian ) age for the Asmari Formation in the studied area. In this section ,9 Microfacies were identified with different sub-environments(Open sea ,Enclosed Lagoon, Semi-enclosed Lagoon , Barrier)which were found to be deposited in a shallow marine carbonate platform in the form of a homoclinal ramp. Based on paleoecology , the lower Asmari Formation (age:chattian) by the occurrence of hyaline benthic foraminifera under normal salinity (psu35-40) in an environment ranging from aphotic to oligophotic under oligotrophic to mezotrophic condition and the middle and upper Asmari Formation by the occurrence of porcellanous benthic foraminifera ,under hypersalinity (psu45-50و more than 50 psu) in euphotic zone under eutrophic to hypertrophic conditions has been deposited in a shallow marine carbonate platform in the form of a homoclinal ramp. Manuscript profile