The Lost World of Mauritia?

We still don’t know much about what Earth looked like millions of years ago. But underwater lost worlds are popping up with increased frequency these days. The latest example is Mauritia. Unfortunately, I’m skeptical…very skeptical.

The Lost World of Mauritia?

Millions of years ago, Mauritia supposedly split off from Madagascar and made its way east, thanks to plate tectonics and sea-floor spreading. Eventually, this lost world sank to the bottom of the ocean. Now, a group of scientists claim to have found evidence for it. Unfortunately, the evidence is incredibly skimpy, consisting of twenty grains of zircons found in the sand on the island of Mauritius as well as an unusually thick sea-floor crust in the Indian Ocean.

Guerrilla Explorer’s Analysis

Twenty grains of zircons? That’s it? Good lord. Supposedly, these zircons were gathered from remote beaches, which reduces the possibility they were carried there by tourists. Plus, the odds of them being blown over from Madagascar are considered unlikely. But let’s be honest…what’s the more likely scenario? That the zircons originated from a sunken lost world? Or that they were inadvertently brought to Mauritius by folks from Madagascar or elsewhere?

Here’s more from Sid Perkins at Nature:

The drowned remnants of an ancient microcontinent may lie scattered beneath the waters between Madagascar and India, a new study suggests.

Evidence for the long-lost land comes from Mauritius, a volcanic island about 900 kilometres east of Madagascar. The oldest basalts on the island date to about 8.9 million years ago, says Bjørn Jamtveit, a geologist at the University of Oslo. Yet grain-by-grain analyses of beach sand that Jamtveit and his colleagues collected at two sites on the Mauritian coast revealed around 20 zircons — tiny crystals of zirconium silicate that are exceedingly resistant to erosion or chemical change — that were far older…

(See the rest at Nature)

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