Proterozoic and paleozoic carbonate systems and associated base-metal deposits

元古界和古生界碳酸盐体系及相关贱金属矿床

• 批准号: 311908-2008
• 负责人: Turner, Elizabeth
• 金额: $ 1.68万
• 依托单位: Laurentian University of Sudbury
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=481042
• 关键词: Proterozoic; paleozoic; carbonate; systems; associated

Carbonate sedimentary rocks (limestone and dolostone) are the single best source of information about Earth's surface conditions, the evolution of Earth's biotas, and the chemical state of the Earth's oceans and atmosphere through most of the last 2.5 billion years. Earth's surface conditions changed dramatically and permanently through that interval, from initial conditions almost entirely unlike those of today, to conditions that loosely resemble the modern Earth. Understanding this long but critical transition requires a detailed understanding of the carbonate rocks deposited in Earth's early oceans.

碳酸盐沉积岩（石灰岩和白云岩）是关于地球表面状况，地球生物演化以及过去25亿年大部分时间地球海洋和大气化学状态的唯一最佳信息来源。在这段时间里，地球的表面条件发生了巨大而永久的变化，从最初的几乎完全不同于今天的条件，到与现代地球大致相似的条件。要理解这一漫长而关键的转变，需要对沉积在地球早期海洋中的碳酸盐岩有详细的了解。