what is the blue stones at stonehenge england
The term bluestone in Britain is used in a loose sense to cover all of the foreign stones at Stonehenge.It is a convenience label rather than a geological term, since at least 20 different rock types are represented.he bluestones at Stonehenge were placed there during the third phase of construction at Stonehenge around 2300 BC. It is assumed that there were about 80 of them originally, but this has never been proven since only 43 remain. The stones are estimated to weigh between 2 and 4 tons each.