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Irving Nature Park Transcript

Transcript

Dr. Randall Miller, Research Curator, Geology and Palaeontology, New Brunswick Museum

About 15,000 years ago a glacier stood here at the Irving Nature Park, we would have called it a tidewater glacier because the glacial ice would have been up against the sea. One of the reasons we know this are the red clay sediments that you see behind me. These are marine sediments, we know that because we find fossils of clams and brittlestars, and  sea urchins and barnacles in them. They have been radiocarbon dated and they come from the end of the last ice age around 11 to 12,000 years ago.

If you look closely at these marine clays they have a lot of stones in them and that’s because the ice would have been standing right here and melting, and glaciers are pretty dirty, they have a lot of sand and cobbles in them and as the glacier is melting out, and we get outwash on the front of the ice, all that was washing into the shallow ocean in front of it.