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Sugarloaf Mountain

Randall Miller, Curator of Geology and Palaeontology, New Brunswick Museum

That peak that you see in the distance is Sugarloaf Mountain. It’s an iconic piece of the northern New Brunswick landscape here near Campbellton, It looks like a volcano but it probably never was a volcanic cone at the surface. It is made of volcanic rock, but it was probably a feeder pipe bringing lava to the surface.

Much of the rock that we see around Campbellton is rhyolite, it’s a volcanic lava that’s been dated to just over 400 million years old. That puts it in Early Devonian time.

There are also some interesting outcrops around Sugarloaf that look a bit like debris flows, material that was coming down from the sides of a volcano.