Reconstructing early ocean chemistry in space and time

在空间和时间上重建早期海洋化学

• 批准号: 313171-2008
• 负责人: Shen, Yanan
• 金额: $ 1.79万
• 依托单位: Université du Québec à Montréal
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=428363
• 关键词: Reconstructing; early; ocean; chemistry; space

Investigations of early ocean chemistry have provided new insights into the oxygenation history of the Earth's early biosphere as well as the kill and trigger mechanisms of Phanerozoic mass extinctions. There is strong evidence that atmospheric oxygen rose dramatically between 2.3~2.3 Ga for the first time in the Earth's history. Oxygen availability in early Proterozoic oceans may have influenced biogeochemical cycling of many redox-sensitive elements (S, C, P, Fe, Mn, etc.) and, as a consequence, ocean chemistry. Therefore, reconstruction of early ocean chemistry in space and time may provide one of the most important examples of how geological and biological processes interplay at the surface of the Earth.

对早期海洋化学的研究为地球早期生物圈的氧合历史以及显生界大规模灭绝的杀死和触发机制提供了新的见解。有强有力的证据表明，大气氧在地球历史上第一次在2.3~2.3Ga之间急剧上升。早元古代海洋的氧可获得性可能影响了许多氧化还原敏感元素(S、C、P、Fe、Mn等)的生物地球化学循环。因此，海洋化学也是如此。因此，在空间和时间上重建早期海洋化学可能提供最重要的例子之一，说明地质和生物过程如何在地球表面相互作用。