Results 1 to 10 of about 4,180,103 (67)

Palynostratigraphy of the Sanganeh Formation at the East and Central Kopeh-Dagh Basin based on dinoflagellate cysts [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2015
The Sanganeh Formation (Lower Cretaceous) has cropped out across the Kopeh-Dagh Basin. The formation conformably overly the Aptian Sarcheshmeh Formation and is in turn overlain conformably by glauconitic sandstone of the Aitamir Formation. The considered formation in eastern and central parts of the basin comprises predominantly dark shale with some ...
Narges Shokri, Ebrahim Ghasemi-Nejad, Ali-Reza Ashouri   +2 more
core   +9 more sources

Calcareous nannofossil biostratigraphy of Sarcheshmeh and Sanganeh formations at Qaleh Jegh and Yazdan Abad sections (West of Kopet-Dagh Basin) [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2017
1-    Introduction Kopet Dagh Basin is located on the northeast of Iran, extending over Iran, Turkmenistan and Afghanistan with a west-northwest to east-southeast trend. The Iranian part of the basin is located between 61°14ˊ and 54°00ˊE and 38°15ˊ and 35°38ˊ N.
Azam Gholami Fard, Anoshiravan L. Kani, Azam Mahanipour   +2 more
core   +3 more sources

Palynofacies and Palaeoenvironment of the Sanganeh Formation, East and the Center of the Kopet-Dagh Basin [PDF]

Journal of Stratigraphy and Sedimentology Researches, 2021
Abstract In order to identify the palynofacies and to reconstruct the paleoenvironment of the Lower Cretaceous depositions in the Kopet-Dagh sedimentary basin, the Sanganeh Formation was sampled and studied. The four sections of the Sanganeh Formation were selected for correlation and comparison in the east and the center of the Kopet- Dagh Basin ...
Narges Shokri, Ebrahim Ghasemi-nejad, Ali Reza Ashouri   +2 more
doaj   +3 more sources

Petrography and Geochemical Signatures in Cracks Filling Calcite Sequences in Septarian Concretions, Sanganeh Formation, Kopet-Dagh Basin, NE Iran [PDF]

Journal of Applied Sciences, 2010
The objectives of this study were to understand the stages of crack-fill calcite in these concretions that can help in a better understanding of these secondary structures in NE Iran as well as other parts of the world. Petrography and stable isotopes signatures revealed that the septarian concretions are multiphase and display several stages of ...
Mahboubi, A., Moussavi-Harami, R., Collins, Lindsay, Muhling, Janet   +3 more
openaire   +3 more sources

Palynology and paleoecology of Sarcheshmeh and Sanganeh formations at Baghak section (east of Kopeh-Dagh)

Journal of Stratigraphy and Sedimentology Researches, 2014
1-Introduction The Kopeh-Dagh as an inverted basin (Allen et al. 2003) is extended from the east of the Caspian Sea to NE Iran, north Afghanistan and Turkmenistan. Following the closure of palaeo-Tethys in the Middle Triassic and the opening of Neo-Tethys during the early to middle Jurassic, the Kopeh-Dagh basin formed during the early to middle ...
Mahjooneh Keshmiri, Ebrahim Ghasemi-Nejad, Alireza Ashuri, Mohsen Yazdi- Moghaddam, Amir-Mohammad Jamali   +4 more
openaire   +2 more sources

Palinology and Paleoecology of Sarcheshmeh and Sanganeh formations at Baghak section (East of Kopeh-Dogh)

Journal of Stratigraphy and Sedimentology Researches, 2014
این مطالعه به بررسی توالی رسوبات کرتاسه زیرین شامل سازندهای سرچشمه و سنگانه در خاور منطقه کپه داغ ( برش چینه‏شناسی باغک) از نقطه نظر پالینولوژیکی می‏پردازد. بر اساس مطالعات انجام شده ، 25 جنس و 31 گونه داینوفلاژله شناسایی گردید. با توجه به داینوفلاژله‏های شناسایی شده و با استفاده از مطالعه فرامینیفرهای موجود در این برش سن بارمین پسین-آپتین پیشین برای ...
Mohsen Yazdi- Moghaddam, Alireza Ashuri, Amir-Mohammad Jamali, Mahjooneh Keshmiri, Ebrahim Ghasemi-Nejad, Alireza Ashuri   +5 more
openaire   +2 more sources

Evaluation of multi-hazard map produced using MaxEnt machine learning technique. [PDF]

Sci Rep, 2021
Javidan N, Kavian A, Pourghasemi HR, Conoscenti C, Jafarian Z, Rodrigo-Comino J.   +5 more
europepmc   +1 more source

The characterization of clay minerals in the Kashafrud Formation in a gas field in northeast Iran. [PDF]

Sci Rep
Ardebili PN, Jozanikohan G, Moradzadeh A.   +2 more
europepmc   +1 more source

Biostratigraphic studies of the lower cretaceous (Upper Barremian—lower Aptian) Sarcheshmeh and Sanganeh Formations in the Kopet Dagh basin, NE Iran: An integration of calcareous nannofossil and ammonite stratigraphies

Stratigraphy and Geological Correlation, 2011
Lower Cretaceous sediments of the northwestern part of the Kopet Dagh sedimentary basin have been sampled with the purpose to study stratigraphic distribution of calcareous nannofossils. A total of 87 samples from the 1900-m-thick marly limestones, shales and siltstones of the Sarcheshmeh and Sanganeh Formations (late Barremian-early Aptian) displayed ...
S. N. Raisossadat, M. H. Shokri
openaire   +2 more sources

The ammonite family Parahoplitidae in the Sanganeh Formation of the Kopet Dagh Basin, north-eastern Iran

Cretaceous Research, 2006
Abstract The Iranian part of the Kopet Dagh Basin is located in north-eastern Iran, where sedimentation was continuous throughout Jurassic to Tertiary times. The ammonite content of the Sanganeh Formation (Lower Cretaceous) has been studied. The following parahoplitid forms have been recorded: Acanthohoplites cf. aschiltaensis , A.
Seyed Naser Raisossadat
openaire   +2 more sources