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Najjarzadeh, Mohammad Taghi, Ashouri, Ali Reaza, Yazdi, Mehdi, Bahrami, Ali. (1399). Biostratigraphy of Devonian-Carboniferous boundary in Tuyeh-Darvar section, north of Iran. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 12(2), 98-123. doi: 10.30495/ijes.2020.673332
Mohammad Taghi Najjarzadeh; Ali Reaza Ashouri; Mehdi Yazdi; Ali Bahrami. "Biostratigraphy of Devonian-Carboniferous boundary in Tuyeh-Darvar section, north of Iran". نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 12, 2, 1399, 98-123. doi: 10.30495/ijes.2020.673332
Najjarzadeh, Mohammad Taghi, Ashouri, Ali Reaza, Yazdi, Mehdi, Bahrami, Ali. (1399). 'Biostratigraphy of Devonian-Carboniferous boundary in Tuyeh-Darvar section, north of Iran', نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 12(2), pp. 98-123. doi: 10.30495/ijes.2020.673332
Najjarzadeh, Mohammad Taghi, Ashouri, Ali Reaza, Yazdi, Mehdi, Bahrami, Ali. Biostratigraphy of Devonian-Carboniferous boundary in Tuyeh-Darvar section, north of Iran. نشریه علمی پژوهشی دانشگاه آزاد اسلامی, 1399; 12(2): 98-123. doi: 10.30495/ijes.2020.673332

Biostratigraphy of Devonian-Carboniferous boundary in Tuyeh-Darvar section, north of Iran

Iranian Journal of Earth Sciences
مقاله 2، دوره 12، شماره 2، تیر 2020، صفحه 98-123    اصل مقاله (3.92 M)
نوع مقاله: Original Research Paper
شناسه دیجیتال (DOI): 10.30495/ijes.2020.673332
نویسندگان
Mohammad Taghi Najjarzadeh1؛ Ali Reaza Ashouri* 2؛ Mehdi Yazdi3؛ Ali Bahrami3
1Department of Geology, Science and Research Branch, Islamic Azad University, Tehran, Iran
2Department of Geology, Faculty of Science, Ferdowsi University of Mashhad, Mashhad, Iran
3Department of Geology, Faculty of Science, University of Isfahan, Isfahan, Iran
چکیده
Devonian-Carboniferous boundary is not clear in the Eastern Alborz Mountains. In the current study Tuyeh-Darvar section with about 170 m, thickness is selected. In this investigation, the primary goal is revision of Devonian/Carboniferous Boundary (known as DCB) and the other goal is the redefinition of the DCB as a famous necessity (based on ICS program in 2008 for defining the boundary and to find a new GSSP). According to Conodont data from acid-leaching 53 carbonate samples(by acid acetic) that obtained from Late Devonian and Early Carboniferous deposits in this section, and based on standard conodont Zonation 6 Zone are recognized;1. Bi.ultimus/or Si.praesulcata Zone, 2. Pr.kockeli /or Si.sulcata Zone, 3. Si.duplicata to Si.sandbergi bio interval, 4. Si.crenulata Zone, 5.Gnathodus-P.inornatus Zone, and 6.Ps.multistriatus Zone. Considering to the Conodont Zones above mentioned, Conodont faunas and other evidences, in the Tuyeh-Darvare section the DCB, is located within cream to grey silt stone beds, which are lies between K6 limestone and K8 dark carbonate beds (about 7.10 m above the base of recent studied section).
کلیدواژه‌ها
Carboniferous؛ Conodont؛ Devonian؛ Jeirud؛ Mubarak
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