The origin of iron formations: implications for ancient ocean chemistry and the evolution of microbial life

铁形成的起源：对古代海洋化学和微生物生命进化的影响

• 批准号: DP140100512
• 负责人: Adj/Prof Birger Rasmussen
• 金额: $ 27.64万
• 依托单位: Curtin University
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2014
• 资助国家: 澳大利亚
• 起止时间: 2014-05-13 至 2017-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP140100512
• 关键词: origin; iron; formations; implications; ancient

Iron formations host most of the world's iron reserves and are central to our understanding of ancient ocean chemistry and the diversity of microbial life. Despite their scientific importance, questions remain about their original composition and formation. Preliminary work suggests that basic assumptions about their deposition require reevaluation. This project will use new technology and novel methods to investigate the precursor sediments of iron formations and their temporal relationship with periods of global magmatism and atmospheric oxygenation. Results will be used to test and develop new depositional models for iron formations, underpinning interpretations about the composition of the Precambrian ocean, atmosphere and biosphere.

铁地层拥有世界上大部分的铁储量，是我们了解古代海洋化学和微生物生命多样性的核心。尽管它们在科学上很重要，但关于它们的原始组成和形成的问题仍然存在。初步工作表明，关于其沉积的基本假设需要重新评估。该项目将利用新技术和新方法研究铁形成的前体沉积物及其与全球岩浆活动和大气氧化时期的时间关系。研究结果将用于测试和开发新的铁地层沉积模型，支持对前寒武纪海洋，大气和生物圈组成的解释。