Exercise Experimental melt compositions

In an experimental work, Hirose & Kushiro (1993) determined the major element composition of partial melts in equilibrium with mantle phases (spinel-peridotite KLB-1) at different pressures and temperatures. The results are given as table in the supplementary data (handouts) than can be downloaded. Analyze the data provided in this table and display the composition of the equilibrium melts as a function of pressure in x-y-plots. To do so, plot SiO2, MgO, CaO and Na2O, each in a single plot, versus pressure on the x-axis.

Note that you will find more than one datapoint for a single pressure value, therefore your plots need to display a range of compositions at a single pressure value (see the diagrams on overhead #58).

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