They're located west-south-west of Ironbridge, so it's not quite into Wales, and I realise I don't know the name, beyond 'Welsh borders', of that area with Wroxeter, Shrewsbury, Quatford - basically from the Malverns across into Wales. If I had a car, and could figure out a sensible way to navigate along roads towards a GPS position, I'd be very tempted to drive over and see what they look like in ground truth. I suspect they're a signature of a truly spectacular fissure eruption a few hundred megayears ago; it looks as if the spheres were carved out by water escaping from between the dyke and the escarpment.
But I am more ignorant of geography than a worm is of wind-surfing. I've pointed Tim Bond, a geologist at ICL (OK, specialising more in Venus than in Earth at the moment, but one presumably trains long on Earth before proceeding outwards) at this page, and expect him to post something amazingly clear and vastly erudite.
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timeasmymeasure
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Date: 2005-03-22 08:51 pm (UTC)But I am more ignorant of geography than a worm is of wind-surfing. I've pointed Tim Bond, a geologist at ICL (OK, specialising more in Venus than in Earth at the moment, but one presumably trains long on Earth before proceeding outwards) at this page, and expect him to post something amazingly clear and vastly erudite.