Boiling rocks from Earth's crust tore an ocean into Mongolia 410 million years ago
![Boiling rocks from Earth's crust tore an ocean into Mongolia 410 million years ago](https://cdn.mos.cms.futurecdn.net/R4hCqjVkeiXuQenXMa9MrS.jpg)
An ocean that opened up in what is now Mongolia 410 million years ago was created by a hot upwelling of rock known as a mantle plume.
An ocean that opened up in what is now Mongolia 410 million years ago was created by a hot upwelling of rock known as a mantle plume.