Lm Of A Gunflint Cherts From Ontario Photograph by Science Photo Library

Lm Of A Gunflint Cherts From Ontario

by Science Photo Library

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Title

Lm Of A Gunflint Cherts From Ontario

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Science Photo Library

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Photograph - Photograph

Description

Light micrograph of a rock thin section of Gunflint cherts from Ontario, Canada, showing fossil remains of the earliest life forms yet found, dating from two billion years ago. The sample includes a mixture of organic detritus, filaments resembling the modern day filamentous blue green algae, & colonies of algae (spikelets). Not visible, but included among Gunflints are spheroids - related to coccoid blue green algae of today. These primitive plants gained energy through photosynthesis, releasing free oxygen into the environment as a by product. This had far reaching consequences for the subsequent history of the environment. Mag:X40 (35mm size)

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September 16th, 2018

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