Basement (geology)

In geology, basement and crystalline basement are the rocks below a sedimentary platform or cover, or more generally any rock below sedimentary rocks or sedimentary basins that are metamorphic or igneous in origin.[1] In the same way, the sediments or sedimentary rocks on top of the basement can be called a "cover" or "sedimentary cover".

Gneiss outcrop, basement rock, Scotland

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