lunes, 19 de diciembre de 2011

Scientists discover source of rock used in Stonehenge's first circle

Discovery reignites debate over transportation of smaller standing stones

Scientists have succeeded in locating the exact source of some of the rock believed to have been used 5000 years ago to create Stonehenge's first stone circle.

By comparing fragments of stone found at and around Stonehenge with rocks in south-west Wales, they have been able to identify the original rock outcrop that some of the Stonehenge material came from.

The work - carried out by geologists Robert Ixer of the University of Leicester and Richard Bevins of the National Museum of Wales - has pinpointed the source as a 70 metre long rock outcrop called Craig Rhos-y-Felin, near Pont Saeson in north Pembrokeshire. It's the first time that an exact source has been found for any of the stones thought to have been used to build Stonehenge.

The discovery has re-invigorated one of academia's longest running debates - whether the smaller standing stones of Stonehenge were quarried and brought all the way there from Pembrokeshire by prehistoric humans or whether they had already been plucked out of ancient rock outcrops and carried all or part of the way to Wiltshire by glaciers hundreds of thousands of years earlier.

Archaeologists tend to subscribe to the 'human transport' theory, while some geomorphologists favour the glacial one. The debate is solely about Stonehenge's early/smaller standing stones (often known collectively as 'bluestones') - not about the larger ones (most of the so-called 'sarsens') which were incorporated into the monument several centuries later... [Read more]

Desvelan el misterio del origen de Stonehenge

El Mundo.es. Un equipo de investigadores asegura saber con certeza el origen exacto de algunas de las piedras de Stonehenge, un monumento megalítico de la Edad del Bronce situado cerca de Amesbury, en el condado de Wiltshire (Inglaterra). Durante mucho tiempo se ha sospechado que procedían de las rocas de las... [Leer más]

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