まとめ
化石動物プランクトンの糞便のペレットは,黒いシェールで,海洋生態系と鉱物埋蔵の間のつながりを明らかにしています. これらの発見は,有機に富んだ堆積岩の形成におけるプランクトンの役割を強調しています.
科学分野:
- パレオントロジー・パレオントロジー
- 地質化学 地質化学
- マリン・バイオロジー マリン・バイオロジー
背景:
- 化石動物プランクトンの糞便のペレットは,海洋や湖の黒いシェールで発見されています.
- これらのシェールは,リン酸塩,石油,石炭の埋蔵と関連しています.
- この関連は,プランクトン生態系と鉱物/有機物の堆積との関連を示唆している.
研究 の 目的:
- ゾオプランクトンの排泄物ペレットとブラックシェールの形成との関係を調査する.
- 有機物質と鉱物の堆積におけるプランクトン生態系の役割を理解する.
主な方法:
- ブラックシェール形成における化石動物プランクトンの糞便ペレットの分析.
- 関連する鉱床 (リン酸塩,石油,石炭) の地化学分析.
主要な成果:
- 動物プランクトンの糞便のペレットは,プランクトンの活動とブラックシェール形成を結びつける重要な指標です.
- ブラックシェイルは,無酸素盆地で形成され,下流,上流,外流からの高い生産性によって促進されました.
- 証拠によると,動物プランクトンは,有機物質とミネラルの濃縮と保存に直接的な役割を果たしていることが示唆されています.
結論:
- プランクトン生態系は,経済的に重要なブラック・シェイズの形成において重要な役割を果たします.
- これらの古代の生態系を理解することは,化石燃料と鉱物資源の探査に役立ちます.
- ゾオプランクトンの排泄物ペレットは,無酸素堆積環境の貴重な古生物学的な代理物として機能します.
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