Bolide impact triggered the Late Triassic extinction event in equatorial Panthalassa

Tetsuji Onoue, Honami Sato, Daisuke Yamashita, Minoru Ikehara, Kazutaka Yasukawa, Koichiro Fujinaga, Yasuhiro Kato, Atsushi Matsuoka

研究成果: ジャーナルへの寄稿記事

10 引用 (Scopus)

抄録

Extinctions within major pelagic groups (e.g., radiolarians and conodonts) occurred in a stepwise fashion during the last 15 Myr of the Triassic. Although a marked decline in the diversity of pelagic faunas began at the end of the middle Norian, the cause of the middle Norian extinction is uncertain. Here we show a possible link between the end-middle Norian radiolarian extinction and a bolide impact. Two palaeoenvironmental events occurred during the initial phase of the radiolarian extinction interval: (1) a post-impact shutdown of primary and biogenic silica production within a time span of 10 4 -10 5 yr, and (2) a sustained reduction in the sinking flux of radiolarian silica for ∼0.3 Myr after the impact. The catastrophic collapse of the pelagic ecosystem at this time was probably the dominant factor responsible for the end-middle Norian conodont extinction.

元の言語英語
記事番号29609
ジャーナルScientific reports
6
DOI
出版物ステータス出版済み - 7 8 2016

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bolide
Norian
Triassic
extinction
silica
pelagic ecosystem
conodont
fauna

All Science Journal Classification (ASJC) codes

  • General

これを引用

Onoue, T., Sato, H., Yamashita, D., Ikehara, M., Yasukawa, K., Fujinaga, K., ... Matsuoka, A. (2016). Bolide impact triggered the Late Triassic extinction event in equatorial Panthalassa. Scientific reports, 6, [29609]. https://doi.org/10.1038/srep29609

Bolide impact triggered the Late Triassic extinction event in equatorial Panthalassa. / Onoue, Tetsuji; Sato, Honami; Yamashita, Daisuke; Ikehara, Minoru; Yasukawa, Kazutaka; Fujinaga, Koichiro; Kato, Yasuhiro; Matsuoka, Atsushi.

:: Scientific reports, 巻 6, 29609, 08.07.2016.

研究成果: ジャーナルへの寄稿記事

Onoue, T, Sato, H, Yamashita, D, Ikehara, M, Yasukawa, K, Fujinaga, K, Kato, Y & Matsuoka, A 2016, 'Bolide impact triggered the Late Triassic extinction event in equatorial Panthalassa', Scientific reports, 巻. 6, 29609. https://doi.org/10.1038/srep29609
Onoue, Tetsuji ; Sato, Honami ; Yamashita, Daisuke ; Ikehara, Minoru ; Yasukawa, Kazutaka ; Fujinaga, Koichiro ; Kato, Yasuhiro ; Matsuoka, Atsushi. / Bolide impact triggered the Late Triassic extinction event in equatorial Panthalassa. :: Scientific reports. 2016 ; 巻 6.
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AU - Yasukawa, Kazutaka

AU - Fujinaga, Koichiro

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