stromatolite: Quick Facts

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Photos

Clusters of dark, rounded living stromatolites cover the sandy shore at Hamlyn Bay, Western Australia, with shallow turquoise water in the background.

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Blue-green algae sedimentary rock carbonate rock flysch stylolite molasse bioherm sedimentation clay gravel sand limestone hydraulic equivalence

Basalt sample returned by Apollo 15, from near a long sinous lunar valley called Hadley Rille. Measured at 3.3 years old.

(Bed) Rocks and (Flint) Stones