What are the 5 stages of dating
The results of their work were not fully published until 1995, however, when the chronology of Stonehenge was revised extensively by means of carbon-14 dating.
Most of the surviving 45 original bluestones of Stonehenge are of spotted dolerite (also called diabase) from southwest Wales, specifically the Preseli Mountains.
The Altar Stone (a toppled upright so called because it looked to the 17th-century architect Inigo Jones like an altar at the centre of the monument) and another two sandstone monoliths likely came from the Brecon Beacons, a cluster of mountains about 60 miles (100 km) east of the Preseli range.
Although most experts consider these Welsh stones to have been brought by human agency, some geologists argue that they might have been carried toward the Salisbury Plain thousands of years earlier by ice-age glaciers.
In 1998 Malagasy archaeologist Ramilisonina proposed that Stonehenge was built as a monument to the ancestral dead, the permanence of its stones representing the eternal afterlife.
In 2008 British archaeologists Geoffrey Wainwright suggested—on the basis of the Amesbury Archer, an Early Bronze Age skeleton with a knee injury, excavated 3 miles (5 km) from Stonehenge—that Stonehenge was used in prehistory as a place of healing.
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(Of an estimated 150–240 cremation burials at Stonehenge, 64 had been excavated by the first decade of the 21st century.) The great majority of the burials were of adult males, and pieces of unburned human bone were also found scattered around Stonehenge.