A lost continent rich in cobalt crusts could create a challenging precedent for mineral extraction in the high seas

Date: January 17, 2019

Source: Deep Sea Mining Observer
Author: Andrew Thaler

The Rio Grande Rise is an almost completely unstudied, geologically intriguing, ecologically mysterious, potential lost continent in the deep south Atlantic. And it also hosts dense cobalt-rich crusts.

The Rio Grande Rise is a region of deep-ocean seamounts roughly the area of Iceland in the southwestern Atlantic. It lies west of the Mid-Atlantic Ridge off the coast of South America and near Brazil’s island territories. As the largest oceanic feature on the South American plate, it straddles two microplates. And yet, like much of the southern Atlantic deep sea, it is relatively under sampled.

Almost nothing is known about the ecology or biodiversity of the Rio Grande Rise.

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