Among the many megaliths of Stonehenge, one large slab stands out… or, more accurately, it lies down.
Their arrival in the south of England is considered one of the longest construction transport distances for any ancient monument in the world – and that's part of what makes Stonehenge so impressive.
"One of the key characteristics of the Altar Stone is its unusually high barium content,"the international team of researchers responsible for the study. "It now seems ever more likely that the Altar Stone was not derived from the ORS of the Anglo-Welsh Basin, and therefore it is time to broaden our horizons, both geographically and stratigraphically into northern Britain and also to consider continental sandstones of a younger age,"the authors of the study, which was led by the earth scientist Richard Bevins from Aberystwyth University in the UK.
As a result, Bevins and his colleagues suggest that a hunt for the Altar Stone's origins should begin in younger rock formations, like those laid down in the Permian or Triassic around 200 to 300 million years ago.
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100-year-old origin theory of Stonehenge's iconic Altar Stone could be wrong, scientists saySascha is a U.K.-based trainee staff writer at Live Science. She holds a bachelor’s degree in biology from the University of Southampton in England and a master’s degree in science communication from Imperial College London. Her work has appeared in The Guardian and the health website Zoe. Besides writing, she enjoys playing tennis, bread-making and browsing second-hand shops for hidden gems.
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