Lava-Cooling Operations During the 1973 Eruption of Eldfell Volcano,
Heimaey, Vestmannaeyjar, Iceland
U.S. Geological Survey Open-File Report 97-724

Figure 20.

Graph showing normal rate of cooling of lava over time with depth from the surface. dýpt í metrum = depth in meters; storkunar lína = solidification front; sjálfkæling í hrauni = self-cooling in lava; ár = years.