Monthly Archives: December 2014

Types of unconformities


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An unconformity is an erosional surface between strata. Since they usually form when the older (lower) layers are exposed and eroded, unconformities can tell us about the history of the rock, but sadly, they can also erase millions of years of evidence. There are three main types.

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Evolution of plants


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Below is a barebones overview of the evolution of plants, based on notes from a module in the University of Copenhagen's Origins: Formation of the Universe, Solar System, Earth and Life. For additional information, check here and here. Read more