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A comment on Large crack in East African Rift is evidence of continent splitting in two.

Re:Large crack in East African Rift is evidence of continent... by smoyer on Wednesday April 04, 2018 @06:11PM (#16759728)
"the South Atlantic ocean, which resulted from the break up of South America and Africa around 138m years ago – ever noticed how their coastlines match like pieces of the same puzzle?"

No I had not but now that I look at it it's so obvious. And wow!

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Re:Large crack in East African Rift is evidence of continent... by arethuza on Thursday April 05, 2018 @03:38AM (#16762723)
One related fact that I love is that the Congo and the Amazon used to be the same river - the Amazon reversing flow when the Andes rose up:

https://en.wikipedia.org/wiki/List_of_rivers_by_age

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Re:Large crack in East African Rift is evidence of continent... by blattimwind on Wednesday April 04, 2018 @06:32PM (#16759894)
Alfred Wegener noticed this about a hundred years ago and formulated that theory around this observation and some supporting evidence. However, until the 1950s and 1960s the why would they be moving? was wholly unanswered and Wegeners theories were not accepted until then.
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Re:Large crack in East African Rift is evidence of continent... by kzrdude on Thursday April 05, 2018 @01:52AM (#16762173)
It's remarkable how young that understanding is
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Re:Large crack in East African Rift is evidence of continent... by tboyd47 on Wednesday April 04, 2018 @07:45PM (#16760417)
They match, but only at a curvature slightly smaller than the Earth's curvature, spawning many theories about an expanding Earth in the early days of geology. Those theories have all now been debunked but they make for a fascinating read if you're into scientific rabbit holes.
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Re:Large crack in East African Rift is evidence of continent... by mirimir on Wednesday April 04, 2018 @09:49PM (#16761111)
Also the North Atlantic, but less clearly. Also Greenland and northeastern Canada. And Greenland and Norway, I think.
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