High-resolution stratigraphy of the Changhsingian (Late Permian) successions of NW Iran and the Transcaucasus based on lithological features, conodonts and ammonoids
High-resolution stratigraphy of the Changhsingian (Late Permian) successions of NW Iran and the Transcaucasus based on lithological features, conodonts and ammonoids
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DOI：
10.5194/fr-17-41-2014
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发表时间：
2014-03
期刊：
影响因子：
1.4
通讯作者：
A. Ghaderi;L. Leda;Martin Schobben;D. Korn;A. Ashouri
中科院分区：
文献类型：
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作者：
A. Ghaderi;L. Leda;Martin Schobben;D. Korn;A. Ashouri
抽象的。伊朗西北部的二叠纪-三叠纪界线剖面属于最完整的层序，其中可以研究地球历史上最大的生物灭绝事件。本文对阿拉斯河谷朱尔法地区长兴期六个剖面的岩性、牙形刺和菊石进行了研究。生物地层学的修订导致10牙形石带的分离（从下到上）Clarkina orientalis-C。subcarinata interval zone，C. subcarinata，C. changxingensis、长柄拟步行虫C. bachmanni，C. nodosa，C. yini，C. abadehensis、C. hauschkei、印度象Hindeodus praeparvus-H.长星刺Merrilina ultima-Stepanovites？Mostleri带）和8个菊石带（自下而上为Iranites transacaucasius-Phisonites triangulus、Dzhulfites nodosus、Shevyrevites shevyrevi、Paratirolites acidalis、P. waageni、Stoyanowites dieneri、Abichites stoyanowi和Arasella minuta带）。描述了菊石新属Stoyanowites和Arasella。
Abstract. The Permian–Triassic boundary sections in north-western Iran belong to the most complete successions, in which the largest mass extinction event in the history of the Earth can be studied. We investigated the Changhsingian stage in six sections in the area of Julfa (Aras Valley) for their lithology, conodonts and ammonoids. Revision of the biostratigraphy led to the separation of 10 conodont zones (from bottom to top Clarkina orientalis–C. subcarinata interval zone, C. subcarinata, C. changxingensis, C. bachmanni, C. nodosa, C. yini, C. abadehensis, C. hauschkei, Hindeodus praeparvus–H. changxingensis and Merrilina ultima–Stepanovites ?mostleri zones) and 8 ammonoid zones (from bottom to top Iranites transcaucasius–Phisonites triangulus, Dzhulfites nodosus, Shevyrevites shevyrevi, Paratirolites trapezoidalis, P. waageni, Stoyanowites dieneri, Abichites stoyanowi and Arasella minuta zones). The new ammonoid genera Stoyanowites and Arasella are described.