| First Research on Marine and Nonmarine Sedimentary Sequences and Micropaleontologic Significance across Permian／Triassic Boundary in Iran （Isfahan and Abadeh） |
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| 作者姓名： | MehdiYazdi ManizhehShirani |
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| 作者单位： | DepartmentofGeology,UniverisytofIsfahan,IslamicRepublicofIran |
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| 摘 要： | Abundant ichthyoid remains, conodonts and holothurians sclerites were recovered near the Permian/Triassic boundary from a section south of Isfahan. Recovered ichthyoid remains include shark micro teeth and scales. The ichthyolith material is similar to a Fasanian ichthyolith from the Zakazane area in the Slovak karst of the Western Carpathians, which represents a subspecies of Acodina triassia. Conodont species are mostly neogondolellids. This fauna indicates that the sedimentary environment was marine, while to the north of localities near Isfahan and Zagross, terrestrial deposition was dominant at that time. Aluminasilicate and kaolin are present in a continental unit in Dopolan refractory main (Shahid Nilchian mine) and a section south of Chahriseh Village, north of Isfahan. Pisolitie, ironstone facies and bauxite clay are common near the Permian/Triassic boundary in the Chahriseh region.
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| 关 键 词： | 非海洋沉积序列二叠纪 三叠纪 海洋沉积物 伊朗 微古生物学 |
First Research on Marine and Nonmarine Sedimentary Sequences and Micropaleontologic Significance across Permian/Triassic Boundary in Iran (Isfahan and Abadeh) |
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| MehdiYazdi ManizhehShirani.First Research on Marine and Nonmarine Sedimentary Sequences and Micropaleontologic Significance across Permian/Triassic Boundary in Iran (Isfahan and Abadeh)[J].Journal of China University of Geosciences,2002,13(2):T002-T006. |
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| Authors: | Mehdi Yazdi Manizheh Shirani |
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| Abstract: | Abundant ichthyoid remains, conodonts and holothurians sclerites were recovered near the Permian/Triassic boundary from a section south of Isfahan. Recovered ichthyoid remains include shark micro teeth and scales. The ichthyolith material is similar to a Fasanian ichthyolith from the Zakazane area in the Slovak karst of the Western Carpathians, which represents a subspecies of Acodina triassica.Conodont species are mostly neogondolellids. This fauna indicates that the sedimentary environment was marine, while to the north of localities near Isfahan and Zagross, terrestrial deposition was dominant at that time. Aluminasilicate and kaolin are present in a continental unit in Dopolan refractory main (Shahid Nilchian mine) and a section south of Chahriseh Village, north of Isfahan. Pisolitie, ironstone facies and bauxite clay are common near the Permian/Triassic boundary in the Chahriseh region. |
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| Keywords: | marine and nonmarine sedimentary sequences Permian/Triassic boundary Iran |
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