University of Plymouth PEARL https://pearl.plymouth.ac.uk Faculty of Science and Engineering School of Geography, Earth and Environmental Sciences 2021-01-05 The >494 Ma Lillevik ophiolite fragment (Gratangseidet Igneous Complex) near Narvik, Scandinavian Caledonides Slagstad, T http://hdl.handle.net/10026.1/17056 10.17850/njg100-4-5 Norwegian Journal of Geology Geological Society of Norway All content in PEARL is protected by copyright law. Author manuscripts are made available in accordance with publisher policies. Please cite only the published version using the details provided on the item record or document. In the absence of an open licence (e.g. Creative Commons), permissions for further reuse of content should be sought from the publisher or author. NORWEGIAN JOURNAL OF GEOLOGY https://dx.doi.org/10.1785/njg100-4-5 The >494 Ma Lillevik ophiolite fragment (Gratangseidet Igneous Complex) near Narvik, Scandinavian Caledonides Trond Slagstad¹, Mark Anderson², Kerstin Saalmann¹ & Graham Hagen-Peter¹ 1Geological Survey of Norway, 7491 Trondheim, Norway. ²School of Geography, Earth and Environmental Sciences, Plymouth University, Plymouth, UK. E-mail corresponding author (Trond Slagstad):
[email protected] Keywords: One of several irregular, plagioclase-phyric felsic veins in the Lillevik ophiolite fragment (Gratangseidet • Lillevik ophiolite fragment Igneous Complex) in Narvik, northern Norway, yielded a U–Pb zircon age of 494 ± 5 Ma. The veins cut • Caledonides deformed, compositionally layered, light REE-depleted gabbros that arguably constituted part of the • Ophiolite now-dismembered ophiolite stratigraphy. The felsic veins were themselves deformed, probably during • Cambrian Silurian Scandian deformation, but the cross-cutting relationships suggest that they post-date initial deformation of the ophiolitic rocks.