Geology of Colorado (Boulder Valley) - Field Trip #1, Stop #4: Lykins Formation

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Stromatolites (algal mats) occur all through the Lykins formation, Forelle member. The high salinity of the water where stromatolites form likely kept out snails and other 'grazers' which would feed on the algae.
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Stromatolites (algal mats) occur all through the Lykins formation, Forelle member. The high salinity of the water where stromatolites form likely kept out snails and other 'grazers' which would feed on the algae.