Chlorine 36 dating and the blue stones of stonehenge
If this were the case, it would advance the earliest known stone structure at the monument by some 500 years.A small outer bank beyond the ditch could also date to this period.The pits may have contained standing timbers creating a timber circle, although there is no excavated evidence of them.A recent excavation has suggested that the Aubrey Holes may have originally been used to erect a bluestone circle.Because its bank is inside its ditch, Stonehenge is not truly a henge site. Stones visible today are shown coloured Mike Parker Pearson, leader of the Stonehenge Riverside Project based at Durrington Walls, noted that Stonehenge appears to have been associated with burial from the earliest period of its existence: Stonehenge was a place of burial from its beginning to its zenith in the mid third millennium B. The cremation burial dating to Stonehenge's sarsen stones phase is likely just one of many from this later period of the monument's use and demonstrates that it was still very much a domain of the dead.Despite being contemporary with true Neolithic henges and stone circles, Stonehenge is in many ways atypical—for example, at more than 24 feet (7.3 m) tall, its extant trilithons' lintels, held in place with mortise and tenon joints, make it unique. Stonehenge evolved in several construction phases spanning at least 1500 years.
It consists of a ring of standing stones, with each standing stone around 13 feet (4.0 m) high, seven feet (2.1 m) wide and weighing around 25 tons.In approximately 3500 BC, a Stonehenge Cursus was built 2,300 feet (700 m) north of the site as the first farmers began to clear the trees and develop the area.A number of other previously overlooked stone or wooden structures and burial mounds may date as far back as 4000 BC.The surrounding circular earth bank and ditch, which constitute the earliest phase of the monument, have been dated to about 3100 BC.
Radiocarbon dating suggests that the first bluestones were raised between 24 BC, It has been a legally protected Scheduled Ancient Monument since 1882 when legislation to protect historic monuments was first successfully introduced in Britain.The Oxford English Dictionary cites Ælfric's tenth-century glossary, in which henge-cliff is given the meaning "precipice", or stone, thus the stanenges or Stanheng "not far from Salisbury" recorded by eleventh-century writers are "supported stones".