How much do we know about Stonehenge? Less than we think. And what has Stonehenge got to do with the Ice Age? More than we might think. This blog is mostly devoted to the problems of where the Stonehenge bluestones came from, and how they got from their source areas to the monument. Now and then I will muse on related Stonehenge topics which have an Ice Age dimension...
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Tuesday, 20 May 2014
Fresh spotted dolerite
Thanks to Chris for sending this photo. He says this lump of spotted dolerite is near Carn Menyn (Carn Meini) and about 150m downslope from where the river springs. Presumably that means somewhere near the "stone river" that some people get so excited about.........
It would also be not too far from the strange little burial mound that Profs TD and GW excavated a while ago, with our old friend Alice paddling about in the pouring rain. Remember that? It was all on the telly.......
The apparent freshness of the flanks of this stone is certainly intriguing. Some of the heavily weathered surfaces on and near Carn Meini have of course been exposed to cosmic radiation and chemical weathering for hundreds of thousands of years, and some which have been exposed just since the Devensian will certainly look much fresher. This stone is worth investigating.
In this area we must be careful, because we know that local farmers (and the faithful congregation of the Mynachlogddu Chapel) have been collecting building stone from here over the past 200 years, so the stone may have been bashed about at some stage in the 1800s or even 1900s.
This is to the SE, where the river is forming that flows down to join the Eastern Cleddau.
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