The ins and outs of a Proterozoic supercontinent - what is the significance of 990-900 Ma orogenesis for the assembly of Rodinia?

元古代超大陆的来龙去脉——990-900Ma造山作用对于罗迪尼亚的组装有何意义？

• 批准号: DP0343406
• 负责人: Prof Christopher Wilson
• 金额: $ 19.44万
• 依托单位: The University of Melbourne
• 依托单位国家: 澳大利亚
• 项目类别: Discovery Projects
• 财政年份: 2003
• 资助国家: 澳大利亚
• 起止时间: 2003-01-01 至 2006-12-31
• 项目状态: 已结题
• 来源: https://dataportal.arc.gov.au/RGS/Web/Grants/DP0343406
• 关键词: ins; outs; Proterozoic; supercontinent; what

The hypothesis that all of Earth's continents came together one billion years ago to form a supercontinent known as Rodinia has invigorated debate about ancient continental distributions. Current models depict a flawed configuration for Rodinia, since they assume that continental fragments preserving evidence for quite different episodes of tectonic activity between 1350 and 900 million years ago developed at the same time. This project will make new correlations based upon careful observation and precise isotopic dating of rocks in Antarctica and Mexico, and will use these data to develop a more realistic picture of the ancient Earth.

10亿年前，地球上所有的大陆都聚集在一起，形成了一个名为Rodinia的超大陆，这一假设引发了关于古代大陆分布的争论。 目前的模型描绘了Rodinia的一个有缺陷的配置，因为它们假设大陆碎片保存了13.5亿至9亿年前相当不同的构造活动时期的证据。 该项目将根据对南极洲和墨西哥岩石的仔细观察和精确的同位素测年作出新的相关性，并将利用这些数据绘制一幅更真实的古代地球图。