http://precedings.nature.com/users/2e11eeaaca36fe49ff29c07a2cf21f95/ Documents posted by Meysam Shafiee Ardestani Nature Publishing Group en Nature Precedings http://precedings.nature.com/images/header_logo.gif http://precedings.nature.com http://dx.doi.org/10.1038/npre.2009.3944.1 In order to study the fossil contents of the Abderaz Formation for biostratigraphical purposes the 300 meters thick section was sampled at type section. The sequence is mainly made up of grey shales and marls with two units of chalky limestone in upper part. The lower contact of the formation with Aitamir Formation is disconform while the upper contact with Abtalkh is continuous. There are huge amounts of inoceramids and ammonite. In the chalk limestone bonds of this formation which is belong to Santonian time planktonic, would exist some foraminifera with a less diversity because during the Santonian, the members of morphotype group three (M3) shows a regression in the above-mentioned section, with association of tegilla shapes decreases in the area and sea water. The study of the planktonic foraminifera in isolated form led to differentiate three morphotype groups. The first group is characterized by trochospiral tests usually indicate shallow waters, the second group contains forms with strong ornamentations and the primary keels representing mid waters and finally compact trochospiral tests with keels known as deep water indices are included in the third group. Studies on the morphotypes showed a regressive cycle for Abderaz Formation. http://dx.doi.org/10.1038/npre.2009.3944.1 Fri, 20 Nov 2009 06:49:53 UTC Lithostratigraphy and study of planktonic foraminifera of the Abderaz Formation at type section, Kopet-Dagh basin, IRAN doi:10.1038/npre.2009.3944.1 2009-11-20 Meysam Shafiee Ardestani Nature Precedings 2009-11-20T06:49:53Z Manuscript Earth & Environment http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/2787/version/1 Abderaz Formation at its type section with an age of Turonian-early Campanian and a thickness of 300 m contains light grey shale and marl. The study of the planktonic foraminifera in isolated form led to differentiate three morphotype groups. The first group is characterized by trochospiral tests usually indicate shallow waters, the second group contains forms with strong ornamentations and the primary keels representing mid waters and finally compact trochospiral tests with keels known as deep water indices are included in the third group. Studies on the morphotypes showed a regressive cycle for Abderaz Formation. Also the planktonic to benthic ratio was calculated using Depth = e(3.58718 + (0.03534 × %*p) equilibrium which explains that at the deposits 400 meter at total part of in this Formation. This study was intended to explore the marine sedimentation of Abderaz Formation in (outer neritic-upper bathyal) restrict and the provided curves from morphotypes changes are in full agreement with the curves of the sea level changes and planktonic foraminifer to epifauna benthic ratio. http://precedings.nature.com/documents/2787/version/1 Wed, 21 Jan 2009 16:17:03 UTC Palaeobathymetry of the Abderaz Formation using foraminifera, Iran hdl:10101/npre.2009.2787.1 2009-11-10 Meysam Shafiee Ardestani Nature Precedings 2009-01-21T16:17:03Z Manuscript Ecology Earth & Environment http://creativecommons.org/licenses/by/3.0/ http://dx.doi.org/10.1038/npre.2009.3189.1 Abderaz Formation at its type section with an age of Turonian-Early Campanian and a thickness of 300 m contains light grey shale and marl. The study of the planktonic foraminifera in isolated form led to differentiate three morphotype groups. The first group is characterized by trochospiral tests usually indicate shallow waters, the second group contains forms with strong ornamentations and the primary keels representing mid waters and finally compact trochospiral tests with keels known as deep water indices are included in the third group. Studies on the morphotypes showed a regressive cycle for Abderaz Formation. http://dx.doi.org/10.1038/npre.2009.3189.1 Fri, 01 May 2009 10:15:59 UTC Study of planktonic morphotype of the Abderaz Formation at type section, Iran doi:10.1038/npre.2009.3189.1 2009-11-10 Meysam Shafiee Ardestani Nature Precedings 2009-05-01T10:15:59Z Manuscript Ecology Earth & Environment Evolutionary Biology http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/3342/version/1 The main aim of this research is study of the planktonic foraminifera morphogroups distinction genus to perform by changing the umbilicus area in Ziarat-kola section to find novel results. Therefore, original objection at this research considers the cause of organizing umbilicus structures (Lip, Portici, Tegilla) at this protests. it seems that phylogeny trend entirely the changes of planktonic foraminifera changing from lip at primary morphogroup to tegilla at development shape which continued this phylogeny trend opening become entirely umbilicus that this trend accompanied to increasing deep. Therefore, the study of planktonic foraminifera morphotype, and recognizing, the obtained results from planktonic foraminifera analysis percent and their comparison with umbilicus structures area diagrams at this section indicats the increasing morphotype three accompany with increase in sea level that here dominated portici and tegilla structure with compressed opening and with decrease of morphotype three which showed decrease sea level, opening structure (lip) dominated. These trends follows the from Pascal law at Ziarat-kola section of the research. http://precedings.nature.com/documents/3342/version/1 Mon, 15 Jun 2009 22:47:30 UTC The study of the umbilical system in planktonic foraminifera in relation with depth of the Ziarat-kola section at the Maastrichtian, Central Alborz, IRAN hdl:10101/npre.2009.3342.1 2009-06-15 Meysam Shafiee Ardestani Nature Precedings 2009-06-15T22:47:30Z Manuscript Ecology Earth & Environment Evolutionary Biology http://creativecommons.org/licenses/by/3.0/ http://precedings.nature.com/documents/3206/version/1 Prospect of changes in such umbilical structures as Lip, Portici and Tegilla throughout Turonian-Campanian was also investigated. The phylogenic trend show that Lip structure in primary morphogroups turns gradually to tegilla in more developed forms in which the opening become also entirely umbilical. Statistical an analysis showed that the trends of changes are correlatable with increase in water depth while a decrease in depth result in development of lip in the planktonic foraminifera studied. The changes are considered to be in accord with Pascal law. http://precedings.nature.com/documents/3206/version/1 Thu, 30 Apr 2009 19:21:45 UTC The study of the umbilical system in planktonic foraminifera in relation with depth of the Abderaz Formation at type section, IRAN hdl:10101/npre.2009.3206.1 2009-04-30 Meysam Shafiee Ardestani Nature Precedings 2009-04-30T19:21:45Z Manuscript Ecology Earth & Environment Evolutionary Biology http://creativecommons.org/licenses/by/3.0/