Enhanced flux of extraterrestrial 3 He across the Permian–Triassic boundary

Tetsuji Onoue, Naoto Takahata, Mitsutaka Miura, Honami Sato, Akira Ishikawa, Katsuhito Soda, Yuji Sano, Yukio Isozaki

Research output: Contribution to journalArticle

Abstract

The ca 252 Ma Permian–Triassic boundary (PTB) represents the most severe mass extinction event of the Phanerozoic, with the disappearance of ~ 80% of marine invertebrate species. Large-scale eruption of the Siberian Traps is the commonly favored cause, although the link between volcanism and extinction remains debated. Here, we report evidence for an extraterrestrial 3 He influx in the PTB section of deep-sea bedded cherts from Japan. This unusual signal indicates a significant increase in the influx of interplanetary dust particles, likely related to an asteroid shower in the inner solar system. High-resolution stratigraphy indicates that the peak flux of dust particles occurred during the final 500 kyr of the Permian, concurrent with a pre-extinction decline in radiolarian diversity. [Figure not available: see fulltext.].

Original languageEnglish
Article number18
JournalProgress in Earth and Planetary Science
Volume6
Issue number1
DOIs
Publication statusPublished - Dec 1 2019

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extinction
interplanetary dust
mass extinction
Phanerozoic
asteroid
solar system
deep sea
volcanism
Permian
stratigraphy
volcanic eruption
invertebrate
dust
particle

All Science Journal Classification (ASJC) codes

  • Earth and Planetary Sciences(all)

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Enhanced flux of extraterrestrial 3 He across the Permian–Triassic boundary . / Onoue, Tetsuji; Takahata, Naoto; Miura, Mitsutaka; Sato, Honami; Ishikawa, Akira; Soda, Katsuhito; Sano, Yuji; Isozaki, Yukio.

In: Progress in Earth and Planetary Science, Vol. 6, No. 1, 18, 01.12.2019.

Research output: Contribution to journalArticle

Onoue, Tetsuji ; Takahata, Naoto ; Miura, Mitsutaka ; Sato, Honami ; Ishikawa, Akira ; Soda, Katsuhito ; Sano, Yuji ; Isozaki, Yukio. / Enhanced flux of extraterrestrial 3 He across the Permian–Triassic boundary In: Progress in Earth and Planetary Science. 2019 ; Vol. 6, No. 1.
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