Friday, September 09, 2005

Petrified Sea Gardens - fossils

Neuro and I visited Petrified Sea Gardens in Saratoga, NY on Labor Day... a fossil ocean reef estimated to be over 500 million years old.

These fossils were were made by cyanobacteria (bluegreen algae), which formed in mounds but have eroded revealing the inner structure.

Stromatolites still exist in the modern world, most notably in western Australia at Shark Bay, where the water is too salty for most predators.

Modern day stromatolites in Shark Bay, Australia

And a few more of my photos of the fossils:

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