Middle Jurassic palynomorphs of the Kashafrud Formation, Koppeh Dagh Basin, Northeastern Iran

Abstract

Research Article| September 01, 2007 Middle Jurassic palynomorphs of the Kashafrud Formation, Koppeh Dagh Basin, Northeastern Iran Freshteh Sajjadi; Freshteh Sajjadi 1School of Geology, College of Science, University of Tehran, Enghelab Avenue, Tehran, Iran Search for other works by this author on: GSW Google Scholar Hossein Hashemi; Hossein Hashemi 2Department of Geology, Faculty of Science and Research School of Applied Sciences, Tarbiat Moallem University, No. 49, Mofatteh Avenue, Tehran 15614, Iran [e-mail]; [e-mail]; [e-mail] Search for other works by this author on: GSW Google Scholar Afsaneh Dehbozorgi Afsaneh Dehbozorgi 1School of Geology, College of Science, University of Tehran, Enghelab Avenue, Tehran, Iran Search for other works by this author on: GSW Google Scholar Author and Article Information Freshteh Sajjadi 1School of Geology, College of Science, University of Tehran, Enghelab Avenue, Tehran, Iran Hossein Hashemi 2Department of Geology, Faculty of Science and Research School of Applied Sciences, Tarbiat Moallem University, No. 49, Mofatteh Avenue, Tehran 15614, Iran [e-mail]; [e-mail]; [e-mail] Afsaneh Dehbozorgi 1School of Geology, College of Science, University of Tehran, Enghelab Avenue, Tehran, Iran Publisher: Micropaleontology Press Received: 14 Feb 2007 Accepted: 21 Oct 2007 First Online: 06 Mar 2017 Online ISSN: 0026-2803 Print ISSN: 1937-2795 © 2007 The Micropaleontology Project, Inc. Micropaleontology (2007) 53 (5): 391–408. https://doi.org/10.2113/gsmicropal.53.5.391 Article history Received: 14 Feb 2007 Accepted: 21 Oct 2007 First Online: 06 Mar 2017 Cite View This Citation Add to Citation Manager Share Icon Share Facebook Twitter LinkedIn MailTo Tools Icon Tools Get Permissions Search Site Citation Freshteh Sajjadi, Hossein Hashemi, Afsaneh Dehbozorgi; Middle Jurassic palynomorphs of the Kashafrud Formation, Koppeh Dagh Basin, Northeastern Iran. Micropaleontology 2007;; 53 (5): 391–408. doi: https://doi.org/10.2113/gsmicropal.53.5.391 Download citation file: Ris (Zotero) Refmanager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex toolbar search Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentBy SocietyMicropaleontology Search Advanced Search Abstract Diverse and moderately well-preserved palynofloras occur in Middle Jurassic sediments of the Kashafrud Formation at the Senjedak section, southeast of Mashhad, northeastern Iran. Trilete and monolete spores and pollen dominate the assemblages, whereas dinoflagellate cysts, foraminiferal test linings, and fungal spores are minor components. Forty-seven species of spores (30 genera) and 15 species of pollen (eight genera) are identified. Representatives of Dictyophyllidites and Klukisporites are particularly abundant.Based on the stratigraphic distribution of miospores, three distinctive stratigraphically successive palynofloras informally termed in ascending order, Assemblages A, B, and C are identified within the Kashafrud Formation. These are compared with palynozones known from Iran and elsewhere. Based on the presence of certain miospore species, the Kashafrud palynofloras are collectively dated as Middle Jurassic (Bajocian-Bathonian), thus corroborating the faunal (ammonoid) evidence. The appearance of a key miospore species, Contignisporites burgeri, within the succession has been used to attribute a late Bajocian age and early Bathonian age to the lower and upper parts of the studied interval, respectively.Inferred natural relationships of the miospores imply derivation from a diverse parental flora of Pterophyta and gymnosperms, such as Coniferophyta, Cycadophyta, and Ginkgophyta, growing under warm, humid conditions during the Bajocian-Bathonian. The associated marine fauna (ammonites), marine palynomorphs (proximate dinoflagellate cysts, and acritarchs such as Micrhystridium), and foraminiferal test linings, along with terrestrial palynomorphs (spores and pollen) collectively indicate an open marine, nearshore depositional setting for the Kashafrud Formation at the section studied. You do not have access to this content, please speak to your institutional administrator if you feel you should have access.