tag:blogger.com,1999:blog-1228690739485734684.post7476182972816035603..comments2024-03-28T22:13:17.139+00:00Comments on Stonehenge and the Ice Age: Malaspina ice edgesBRIAN JOHNhttp://www.blogger.com/profile/00413447032454568083noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-1228690739485734684.post-6087691143293488452016-09-08T08:07:08.910+01:002016-09-08T08:07:08.910+01:00I wonder who told you that if there are rias there...I wonder who told you that if there are rias there are no glaciations involved? Typical, I suppose, of the rather simplified "truths" that children are told they must believe if they are to get through their exams. As ever, the truth is more complicated, and it was our jobs as university teachers to encourage students to think for themselves and to be sceptical about everything. I've been out of the system for a long time now, but I hope that is still what goes on at universities.....BRIAN JOHNhttps://www.blogger.com/profile/00413447032454568083noreply@blogger.comtag:blogger.com,1999:blog-1228690739485734684.post-7812812167947505712016-09-07T22:58:46.697+01:002016-09-07T22:58:46.697+01:00Thanks Brian. I was taught Geology at Pembroke Com...Thanks Brian. I was taught Geology at Pembroke Comp 40 years ago and I vaguely remember Ria/No glaciation theory.<br />I suppose our romantic nature would love the idea of anceient tribesmen hauling rocks from a "special" place..ah well..<br />The Preseli's are special, of course.<br />Bringing my son "home" at the end of the month hoping to show him some of the wonders of Pembrokeshire..if the weather allows.<br />Incidentally great sight that I have, sadly, only just discovered.wugahttps://www.blogger.com/profile/15354372675768346950noreply@blogger.comtag:blogger.com,1999:blog-1228690739485734684.post-53136384863357181852016-09-04T23:23:12.457+01:002016-09-04T23:23:12.457+01:00No Paul -- fjords will only form where there is a ...No Paul -- fjords will only form where there is a massive amount of ice to be discharged from an upland area towards the lowlands -- as in East Greenland, western Norway, parts of Arctic Canada, Chile etc. Once the ice is channelled, there is tremendous downcutting power, and deeper and deeper fjords can be cut. The situation in Pembrokeshire is quite wrong for the formation of fjords -- instead of channelled ice flow, there must have been areal or extensive flow across an undulating ground surface, with relatively little erosion except on upstanding hill masses like Carn Llidi.BRIAN JOHNhttps://www.blogger.com/profile/00413447032454568083noreply@blogger.comtag:blogger.com,1999:blog-1228690739485734684.post-73276045314559093572016-09-04T22:51:06.593+01:002016-09-04T22:51:06.593+01:00I always assumed that Milford Haven would have bee...I always assumed that Milford Haven would have been a Fjord rather than a Ria if South pembs had been glaciated.wugahttps://www.blogger.com/profile/15354372675768346950noreply@blogger.com