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Pink beaches and icebergs in Canada's ancient, alien landscapes
The exposed peridotite is rich in metals toxic to most plants, leaving only sparse arctic cotton grass and insect-eating species.
Newfoundland's Tablelands Trail offers a unique glimpse into the Earth's mantle, a UNESCO site thrust to the surface during continental collision. This geological wonder serves as a vital location for studying plate tectonics.
Geological forces pushed this rock from 40 kilometers beneath an ocean to the surface "almost 500 million years ago," Oravec says. The black interior peridotite normally remains hidden deep within the planet's middle layer.
"This is a Mecca for geologists and the best proof of the theory of plate tectonics," experts say. The landscape features distinct orange-brown, rust-red, and ochre-yellow rock masses visible along the hiking path.
The 2-kilometer Tablelands Trail leads hikers from a parking area south-west of Woody Point into the U-shaped glacial valley of Winter House Brook Canyon. This route provides rare access to the exposed mantle.
Because the rock is hyperbasic and full of toxic metals, "almost nothing grows here," Oravec explains. Hikers may observe trickling streams alongside arctic cotton grass and small, insect-eating plants adapted to this harsh environment.