Fig. 3: Time-temperature-transformation (TTT) diagram of the Stromboli high-K basalt.

The diagram illustrates the impact of q and \(\dot{\gamma }\) on timescales of crystallization. Crystallization onset (circles) and interruption of the experiment (cross) are plotted as tonset–Tonset and tend–Tend pairs, respectively. Dashed lines represent cooling rates of 1 °C/min (purple), 3 °C/min (orange), 5 °C/min (light blue) and 10 °C/min (black). Note that the symbols are larger than the t–T uncertainties.