An international team of researchers has established the age and composition of the rock of the stones of the most famous monument of the Neolithic.
Back in 1958, a representative of a drilling company named Robert Phillips, helping to restore Stonehenge, took a cylindrical core from one of the columns of the monument. Today, samples from the stones of Stonehenge are prohibited.
But researchers from the Universities of the Witwatersrand (South Africa), Brussels (Belgium), Brighton, Bournemouth, as well as University College London (UK) and other universities studied the biochemistry of this sample.
As a result, they found out that the Stonehenge stones are composed of rocks that contain deposits formed during the era of the dinosars. The age of other inclusions in the rock is 1.6 billion years old. The central circle of Stonehenge columns was built in the Neolithic period, about 2500 years ago.
When scientists looked at these stones through a microscope, they were surprised to find that they were 99.7 percent quartz. This makes the stones more durable, which, perhaps, made them choose this rock thousands of years ago. The work was published in the journal PLOS One.