The Renlandian Orogeny is a Tonian (early Neoproterozoic) tectonic and metamorphic event that is found in East Greenland, on Svalbard, on Ellesmere Island and in Scotland.
[1] This tectonic and metamorphic event was first identified at Renland where the 1040–920 Ma (ages relate to the youngest detrital zircons and timing of later intrusions) Krummedal Succession is folded and cut by an augen gneiss with an interpreted crystallisation age of 915 ± 18 Ma.
[2] In northeastern Svalbard latest Mesoproterozoic to early Neoproterozoic siliciclastic rocks are affected by the Nordaustlandet Orogeny, which has been directly correlated with the Renlandian.
[4] The areas affected by this orogeny are interpreted to have been close to a convergent margin on the edge of the supercontinent Rodinia.
The tectonic and metamorphic effects could have been the result of flat-slab subduction and/or terrane accretion along this margin.