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Ronald Turnbull's avatar

"stromatolitic carbonates and iron-rich argillites and shallow water sandstone" - so this would record our atmosphere being transformed into an oxygen rich one I guess... In NW Scotland we have the billion year old Torridonian sandstone making some spectacular mountains in Wester Ross.

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Michael's avatar

Really excellent blend of history and geology! Enigmatic Ediacaran life forms is an apt phrase. An evolutionary road not travelled but extraordinary. India's geology is fascinating! You could devote periodic essays on different countries' geologies and I wouldn't complain!

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