First U-Pb (CA-ID-TIMS) Dating of the Uppermost Permian Coal Interval in the Minusinsk Coal Basin (Siberia, Russia) Using Zircon Grains from Volcanic Ashfalls

被引：0

作者：

Silantiev, Vladimir V. ^{[1
,2
]}

Arbuzov, Sergey I. ^{[3
,4
]}

Tichomirowa, Marion ^{[5
]}

Kassner, Alexandra ^{[5
]}

Izmailova, Alsu Kh. ^{[1
]}

Ilenok, Sergey S. ^{[3
]}

Soktoev, Bulat R. ^{[3
]}

Nurgalieva, Nouria G. ^{[1
]}

Gutak, Yaroslav M. ^{[6
]}

Felker, Anastasia S. ^{[7
]}

Porokhovnichenko, Lyubov G. ^{[8
]}

Eliseev, Nikolai A. ^{[2
]}

Zharinova, Veronika V. ^{[1
]}

Nurieva, Evgenia M. ^{[1
]}

Urazaeva, Milyausha N. ^{[1
]}

机构：

[1] Kazan Volga Reg Fed Univ, Inst Geol & Petr Technol, Kazan 420008, Russia

[2] Fed Univ, Dept Earth Sci, Jizzakh 130100, Uzbekistan

[3] Natl Res Tomsk Polytech Univ, Sch Earth Sci & Engn, Tomsk 634050, Russia

[4] Russian Acad Sci, Far East Geol Inst, Far Eastern Branch, Vladivostok 690022, Russia

[5] Tech Univ Bergakademie Freiberg, Inst Mineral, D-09599 Freiberg, Germany

[6] Siberian State Ind Univ, Inst Min & Geosyst, Novokuznetsk 654007, Russia

[7] Russian Acad Sci, Arthropod Lab, Borissiak Palaeontol Inst, Moscow 117647, Russia

[8] Natl Res Tomsk State Univ, Fac Geol & Geog, Tomsk 634050, Russia

来源：

MINERALS | 2024年 / 14卷 / 10期

基金：

俄罗斯科学基金会;

关键词：

Siberia; Permian; tonstein; ashfalls; U-PB dating; CA-ID-TIMS; geochronology; biostratigraphy; TRACE-ELEMENT; PARANA BASIN; SOUTHWESTERN CHINA; RADIOMETRIC AGES; ICP-MS; TONSTEINS; MODEL; GEOCHRONOLOGY; DEPOSIT; GEOCHEMISTRY;

D O I：

10.3390/min14100982

中图分类号：

P3 [地球物理学]; P59 [地球化学];

学科分类号：

0708 ; 070902 ;

摘要：

This study presents the first U-Pb (CA-ID-TIMS) radioisotopic dating of zircon grains extracted from tonsteins within the uppermost Permian coal interval of the Minusinsk Coal Basin (Siberia, Russia). Petrographic, structural, and mineralogical analyses confirm the volcanic ash origin of the tonsteins. The parent pyroclastic materials are identified as rhyolite-pantellerite for tonstein I-22 and dacite-rhyodacite for tonstein I-12. Morphological analysis of zircon crystals, along with cathodoluminescence and melt inclusion studies, confirms their volcanic origin and crystallisation temperatures of 700-900 degrees C. New radioisotopic dates of 261.4 +/- 0.7 Ma and 261.3 +/- 0.4 Ma clarify the age of the Izykh Formation, enabling its direct correlation with the Capitanian Stage of the International Chronostratigraphic Chart. The results emphasise the possible discontinuity of the coal-bearing succession of Siberian palaeocontinent and highlight the potential for further stratigraphic refinement through continued radioisotopic dating of tonsteins.

引用

页数：28

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