Correction to: Nature Geoscience https://doi.org/10.1038/ngeo2904, published online 6 March 2017.

In the Supplementary Information file for this Article, in Supplementary Fig. 15, panel b was incorrect and wasn’t of a mafic boudin within the Kovik tectonic window as specified in the caption and marked on the map in panel a. Because the correct image, a field photograph of this location taken in 1991, has been lost, panel b cannot be replaced and thus has been removed. Moreover, as panel d, the correlative field photograph from the Himalayan orogen, is only relevant if compared with panel b, it has also been removed. Accordingly, panel c has been re-labelled as panel b and the caption updated. We thank D. Corrigan (Geological Survey of Canada) for alerting us to the error. Furthermore, in the main article, in the sentence beginning “The congruence is particularly striking...”, “(Supplementary Fig. 15a,c)” should thus be “(Supplementary Fig. 15a,b)”, and “(Supplementary Fig. 15b,d)” is not relevant. The amended Supplementary Information file is supplied with this correction notice. The original Article has not been corrected.