Stratigraphy and Palaeontology
Nasrollah Abbassi; Mohammad Vahidinia; Saeid Tavana; Pooria Vaeznia
Abstract
Numerous vertebrate footprints have been found in the dislocated sandstone slabs in the Mashhad city, northeast Iran. Neogene sediments of Chenaran township are supposed to be provenance of the studied slabs. Identified footprints includes artiodactyl tracks as ichnotaxa Bifidipesvelox, Lamaichnum guanicoe, ...
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Numerous vertebrate footprints have been found in the dislocated sandstone slabs in the Mashhad city, northeast Iran. Neogene sediments of Chenaran township are supposed to be provenance of the studied slabs. Identified footprints includes artiodactyl tracks as ichnotaxa Bifidipesvelox, Lamaichnum guanicoe, Pecoripeda amalphaea, Pecoripeda isp., Carnivore tracks as Canipeda isp., and Felipeda isp., and bird tracks as Avidactyla isp., Avipeda gryponyx, Fuscinapeda texana. Among studied slabs, bird tracks are abundant. This is the first report of Cenozoic vertebrate tracks from the Kopeh Dagh geological zone. Discovery of Lamaichnum guanicoe shows Camelidae distribution in Iranian Plateau is as old as Neogene, and it is the first report of Camelidae sign from Iran. Presence of diverse footprints from Kopeh Dagh shows attenable biodiversity in the region of Iran.
Stratigraphy and Palaeontology
Meysam Shafiee Ardestani; Mohammad Vahidinia
Abstract
Apertural protective structures of the planktonic foraminifera in the Abderaz Formation have been studied in order to determine seal level changes in 4 stratigraphical sections including: Abderaz village, Muzduran pass, Padeha village and Shorb . Lithological study of the Abderaz Formation shown that ...
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Apertural protective structures of the planktonic foraminifera in the Abderaz Formation have been studied in order to determine seal level changes in 4 stratigraphical sections including: Abderaz village, Muzduran pass, Padeha village and Shorb . Lithological study of the Abderaz Formation shown that Shorab section (east of the kopeh-Dagh basin) with 374 meters and Padeha village section with 602 meters represent minimum and maxiumum thickness, respectively. A total of 77 planktonic foraminifers species belonging to 19 genera, have been identified in studied sections. Eight Apertural protected plates have been recognized in the umbilical side of the distinguished planktonic foraminifera. Besides, 4 porticus structures (Simple lip, Tooth like-Porticus, Spiral Porticus, Imbricate Porticus) belonging to the morphotype 2 and 3, three Tegillum structures (Roll-type Tegillum, Strap-Shape Tegillum, Sheet like-Tegillum) belonging to the morphotype 3, and one Lip structure belonging to the morphotype 1, as well as their frequency have been recognized. Statistical analysis of protected structures of the umbilical area have been demonstrated that unlike to the imbricate porticus and sheet like Tegillum, the lip and simple lip structures show the highest frequency, indicating that the Abderaz Formation deposited in the relative shallow marine environment.
