Carbon dating validity

Correction: The original version of this post misstated the cause of inaccuracy in first-generation radiocarbon dating.

It also linked to, and partially relied on, a website of dubious validity.

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carbon dating validity-76

Carbon dating validity

Improved techniques now date the earliest stone structures at Stonehenge to about 2600 B. Sir Joseph Norman Lockyer, who co-discovered helium and founded the journal, Nature, wrote in 1901 that the Heel Stone section of Stonehenge "had been originally aligned with the summer solstice" and calculated that it was built in 1800 B. Further investigations have suggested that Stonehenge was an astronomical observatory, a place of worship and healing or perhaps a cemetery.

Whatever its exact history, origins or age, thousands each year flock to Stonehenge to welcome the sun on the summer solstice.

Carbon 14 is created by cosmic rays in the upper atmosphere.

C14 is continually being created and decaying, leading to an equilibrium state in the atmosphere.

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