Comment on 'Formation of Venusian canali': Considerations of lava types and their thermal behaviors' by T. K. P. Gregg and R. Greeley

Gregg and Greeley (1993) evaluated the mechanisms by which various magma types might have formed the long sinuous channels apparent on the surface of Venus. Among the magma types they evaluated were carbonatites, which are carbonate-rich ionic liquids. Gregg and Greeley (1993) applied thermophysical data for terrestrial carbonatite magmas to evaluate channel formation by carbonatites on Venus. Their analysis is flawed because they used incorrect values for the solidification temperatures of carbonatite magmas.