And this coincides with the breakup of Rodinia.

而这恰逢Rodinia的解体。

When the Rodinia supercontinent broke up circa 750 million years ago, it left large landmasses vulnerable to weathering.

大约 7.5 亿年前， 当罗迪尼亚超级大陆解体时，大片大陆容易受到风化作用的影响。

So according to this timeline of events, Rodinia’s breakup resulted in lots and lots of erosion.

所以根据这个事件时间表，罗迪尼亚的 分手导致了很多很多的侵蚀。

Although textbooks give confident-looking representations of ancient landmasses with names like Laurasia, Gondwana, Rodinia, and Pangaea, these are sometimes based on conclusions that don't altogether hold up.

虽然教科书上好像很有把握地列出了古代的陆块，什么劳拉古陆呀，冈瓦纳大陆呀，罗迪尼亚大陆呀，泛大陆呀，但它们有时候是以不完全能成立的结论为基础的。