Webpages tagged with «caledonides»

Published Oct. 21, 2014 1:31 PM

Have you heard of the mantle rocks hanging out on the Norwegian mountains? It seems not many people have, which is strange because they’ve been there for at least the last Eon or so. This is the tale of my field work looking at these rocks over the last summer. These mantle rocks have hidden themselves well amongst a thin unit of mixed metamorphosed oceanic sediments called a Melange.  The melange unit is trapped structurally below the Middle Allochthon crystalline nappes. It is thin but stretches all the way from the Bergen arcs and about 400km north-eastwards to Røros (and beyond?).