The rock in Glacier is old. Over a billion years old. It was laid down on the floor of oceans far before life existed on land and later lifted up into mountains. Along the trails you can still see signs of the former ocean. Wave created ripples on rocks, cracks in rock that was once mud drying in the sun. And, above, stromatolites, mats left by blue-green algae, some of the oldest evidence of life on earth.
Touching thousands? millions? of years of sediment laid down on an ocean bottom.
Butterfly on top of stromatolites.
The rock in Glacier is old. Over a billion years old. It was laid down on the floor of oceans far before life existed on land and later lifted up into mountains. Along the trails you can still see signs of the former ocean. Wave created ripples on rocks, cracks in rock that was once mud drying in the sun. And, above, stromatolites, mats left by blue-green algae, some of the oldest evidence of life on earth.
Touching thousands? millions? of years of sediment laid down on an ocean bottom.
Butterfly on top of stromatolites.
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