From the Telegraph:
Working with scientists from Japan, experts believe they have found evidence of a continent that disappeared after Africa and South America separated, 900 miles from the coast of Rio de Janeiro.
The discovery of granite, a rock formed on dry land, was announced by the Geology Service of Brazil (CPRM) as a sign of a lost continent.
“This could be Brazil’s Atlantis,” said CPRM geology director Roberto Ventura Santos. “We are almost certain, but we need to strengthen this hypothesis.”
The material was reportedly found more than 8,000 feet beneath the sea in a region known as the Rio Grande Elevation.
It was discovered last year when geologists dredged the seabed. Underwater observations from Japan’s £84 million manned mini-sub Shinkai 6500 yielded more reports of granite formations last month.
“It is unusual because it is granite rock,” Mr Santos told Brazilian newspaper Estadao. “And you don’t find granite on the seabed. It is more usual to find it on the mainland.”
... The current thinking on the findings is that the land is continental crust but further confirmation is needed. Scientists are now expected to drill for more samples later this year.