The Colors of Icelandic Geology

Metamorphosis in High Temperature Areas

Yellow colours: Often pure sulphur (The Krysuvik Area).

Red and brown colours: Iron and sulphur (Fe, S), which assimilates with the oxygen of the atmosphere. The sulphur creates yellow colours and the iron red and brown hematite.

Grey colours: are created when sulphuric acids dissolve the basaltic rock. H2S assimilates the oxygen of the ground water and creates H2SO4 and clay minerals are created.

Light colours: are mainly created by Silica (SiO2), Calcium (CaCO3), and sometimes also Gypsum (CaSO4, H2O).

Geology Iceland
Central highland Landmannalaugar

Photo Credit: Must See in Iceland


NAT and Must see in Iceland have handpicked the best tours in Iceland so you don't have to.