sedimentary interpretations are inappropriate. In 2016, geologist and areologist Abigail Allwood stated that the discovery of Isua stromatolites makes the emergence of life on other planets, including Mars early after its formation, more probable. However, in 2018, she and a team of additional geologists published a paper that raises significant questions as to the origin of the structures, interpreting them as arising from deformation. Thus, the ISB stromatolites remain a subject of ongoing investigation. See also Archean subduction Nuvvuagittuq Greenstone Belt References Greenstone belts Eoarchean volcanism Volcanoes of Denmark Landforms of Greenland Volcanoes of North America