Planktonic foraminifera and dinoflagellate cysts from the Upper Cretaceous Abderaz Formation in the Koppeh-Dagh Basin, NE Iran

被引：6
作者：
Davtalab, Elham [1 ]
Vahidinia, Mohammad [1 ]
Ghasemi-Nejad, Ebrahim [2 ]
Ashouri, Alireza [1 ]
机构：
[1] Ferdowsi Univ Mashhad, Fac Sci, Dept Geol, Azadi Sq,Univ Campus,POB 917751436, Mashhad 9177948953, Iran
[2] Univ Tehran, Univ Coll Sci, Dept Geol, Enghelab Ave,POB 14155-6455, Tehran 1417614411, Iran
来源：
STRATIGRAPHY | 2018年 / 15卷 / 01期
关键词：
Planktonic Foraminifera; dinoflagellate cysts; biostratigraphy; Turonian-Campanian; Koppeh-Dagh Basin; Iran; GLOBAL BOUNDARY STRATOTYPE; SOUTH CASPIAN BASIN; NEW-ZEALAND; INTEGRATED BIOSTRATIGRAPHY; SHEMSHAK GROUP; NORTHERN IRAN; CONIACIAN; EVOLUTION; STRATIGRAPHY; ZONATION;
D O I：
10.29041/strat.15.1.47-66
中图分类号：
P5 [地质学];
学科分类号：
0709 ; 081803 ;
摘要：
Assemblages of planktonic foraminifera and dinoflagellate cysts were studied from the 359 m thick Padeha-Baghak composite section of the Abderaz Formation, eastern Koppeh-Dagh Basin, NE Iran. The formation consists mainly of light grey shales and marls with three chalky limestone beds in the upper part. Nine genera and 44 species of planktonic foraminifera and 39 genera and 85 species of dinoflagellate cysts are identified. Planktonic foraminifera are attributed to four biozones (Dicarinella primitiva-Marginotruncana sigali, Dicarinella concavata, Dicarinella asymetrica and Globotruncanita elevata zones). Two dinocyst superzones (Conosphaeridium striatoconum Superzone and the lower part of the Odontochitina porifera Superzone) with seven interval zones are recognized. These biozones suggest a late Turonian-early Campanian age for the Abderaz Formation in this part of the Koppeh-Dagh Basin.
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页码：47 / 66
页数：20
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