I'm in touch with a lot of people off the record, and it's good to see that there are several correspondents who are working on "the Altar Stone problem." As we know, Bevins and Ixer have suggested that the Altar Stone has nothing to do with the Cosheston Sandstone of Pembrokeshire, but is most likely derived from the ORS Senni Beds which outcrop in the Tywi Valley and in parts of mid Wales on the north flank of the Brecon Beacons. They suggest that the degree of metamorphic alteration of the Altar Stone -- or rather, the sample that they have analysed -- suggests that the source outcrop might be in the area around Abergavenny. Their problem is that there are outcrops over a very wide area, and they have neither the time nor the manpower to check out the territory.
This is where Mavis of Morriston comes in. She has been visiting lots of sites, and thinks that she might now have the actual source of the Altar Stone nailed. We look forward to seeing the results of the investigations published in due course.
1 comment:
I recollect that MPP and his crew jumped upon this suggested Abergavenny link as a confirmation bias add-on to Mike's 'light bulb' bright thought about the A40 route for his trophy 🏆 stone route undertaken by the subservient "Welsh" back in the day when unification was the name of the game ( and with each generation, they played it the same....)
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