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Updated: Feb 13, 2026

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繰り返し発生し,長期にわたる海洋性アノキシアは,ペルミアン・トライアシク危機の後に中止された生物学的回復に寄与しました
Wenhao Li1,2, Bowei Yuan1,2
1National Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), Qingdao 266580, China.
Biology
|February 12, 2026
まとめ
チャオフー地域におけるトライアスの初期の海洋無酸素は,生物の回復を妨げました. しかし,スミティアン/スパティアン境界の気候の冷却イベントの間の短い酸化条件は,海洋生物の重要な回復を促進しました.
科学分野:
- パレオセアノグラフィー
- 海洋地化学は海洋地化学である.
- パレオントロジー・パレオントロジー
背景:
- ペルミアン-トライアスク危機に続く初期のトライアスク生物学的回復は,ほとんど理解されていません.
- 海洋化学は,海洋生態系の回復に大きな影響を与えます.
- チャオフー地域は,この時代を研究するための重要な場所です.
研究 の 目的:
- チャオフー地域におけるトリアシク初期生物の回復に海洋化学の影響を評価する.
- トライアス初期における古海洋学的条件を再構築する.
- 海洋生物の回復を促す,または阻害する環境要因を特定する.
主な方法:
- ピライト含有量,δ13Corg,およびピライトのS同位体組成物の分析.
- 地化学のプロキシを用いた海洋無酸素と酸化状態の再構築.
- 地化学データと生物学的回復イベントの相関.
主要な成果:
- 繰り返し長期にわたる海洋無酸素は,チャオフー地域におけるトライアシク初期を特徴づけた.
- 最古のスパチア紀と最古のスパチア紀の末期に2つの異なる酸化状態のエピソードがありました.
- 陽性 δ13 Corgシフトと δ34 S 遠征は,スミティア/スパティア境界で,生物学的回復と酸化条件と一致しました.
結論:
- 気候の冷却の間に地球規模の海洋循環によって潜在的に強化された酸化条件は,生物学的回復に貢献しました.
- 頻繁な環境的干渉と持続的な海洋無酸素は,トライアシク初期に生物の持続的な回復を最終的に妨げました.
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