Tomotectonic Analysis of Western North America

From West Country Blogspot, in which Graeme makes the rest of us feel a little less insecure by professing he too had never heard the term tomotectonic. I checked its derivation and tomo means a slice or a section but in the reference I found, with English words beginning with tomo, tomotectonic was not one of them. the Americans have a lot to answer for. Super animated globe and for those who wish, a complex article on the topic, start HERE