What Type Of Rock Is Stonehenge Made Of?


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There are actually two stone types used.  The large uprights in the outside circle and the beams bridging these outer circle uprights are of Sarsen which is a sedimentary sandstone.  The inner smaller stones are called Bluestones and are geological blends of basalt and gabbro and can be described as similar to dolerite.  Essentially they are igneous blue/grey rock well suited to their generic term "bluestone" i.e. Get into the exact petrology if it is really important to you.

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