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

地球上所有大陆在10亿年前汇聚在一起，形成了一块名为罗迪尼亚的超级大陆的假设，引发了关于古代大陆分布的辩论。目前的模型描绘了罗迪尼亚的一个有缺陷的配置，因为他们假设保存着1350到9亿年前截然不同的构造活动时期的证据的大陆碎片同时发展。该项目将在对南极洲和墨西哥的岩石进行仔细观察和精确同位素测年的基础上建立新的对比，并将利用这些数据来开发更真实的古代地球图景。

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.