O manto da Terra é dividido atualmente em dois grandes domínios, o Africano e o Pacífico, que se formaram quando o ...

来自澳大利亚柯廷大学的研究人员称，地幔的分裂反映了过去几十亿年间地球表面两个超级大陆的循环演化。在此期间，地球表面出现过两个连成一体的超级大陆：一个是形成于大约12亿年前，并于7.5亿年前解体的罗迪尼亚（Rodinia）超级大陆；另一个是形成于大约3 ...

An icon used to represent a menu that can be toggled by interacting with this icon. A line drawing of the Internet Archive headquarters building façade. An illustration of a computer application ...