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They also claimed that small pieces of debris found near Stonehenge, which were traced back to the dig site in Wales, were actually transported by the movement of glaciers over half a million years ago, and not brought by ancient masons along with the bluestones.
We're going to dig it! ---------------------. Stonehenge Building Materials: For those unfamiliar with the 5 basic rock types at Stonehenge; here is a list of them in chronological order of their first arrival. 85 MYA White Chalk - The outcrop sedimentary rock of Stonehenge is Late Cretaceous Period, Santonian Age, calcium carbonate. Late Cretaceous Period outcrop sedimentary rock is the in situ construction material used by the Stonehenge builders. This material is approximately 85 million years old. This stone is called Seaford Chalk Formation rock. White in color, this building material is from Stonehenge Ditch Mining area. 3100 BC Whitestone - The oldest limestone sedimentary rock of Stonehenge is Early Carboniferous (Mississippian) Period, Arundian Age, calcium carbonate.