Confusing Jumbles of Rocks in Africa Could Represent Oldest Known Earthquakes

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Confusing Jumbles of Rocks in Africa Could Represent Oldest Known Earthquakes
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The geological formations of the Barberton Greenstone Belt have proved difficult to decipher.Our world may seem fragile, but Earth has been around for a very long time. If we ventured far back into the past, would we reach a time when it looked fundamentally different?

We argue that the widely held view of the early Earth as a hotter place, free of earthquakes and with a surface so weak it was unable to form rigid plates, is wrong. We realised this map looked remarkably similar to a geological map made of the aftermath of much more recent submarine landslides. These were triggered by great earthquakes along New Zealand's largest fault, the megathrust in the Hikurangi subduction zone.

What was once thought to be untranslatable turns out to be a remnant of a gigantic landslide containing sediments deposited both on land or in very shallow water, jumbled with those that accumulated on the deep seafloor.

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