Figure 2. Example of geochemical thermometry for the Skaergaard MBS rocks. Lines
correspond to the equilibrium crystallization trajectories calculated at 1 atm and
QFM
conditions for six contact gabbros; the temperature of 1165
10oC is assumed to indicate the
initial temperature for the trapped liquid
[Ariskin, 1999].
Experimental data: circles are residual liquids for the Marginal Border Series pristine rocks
[Hoover, 1989];
diamonds are those obtained for the Lower and Middle Layered Series rocks
[McBirney and Nakamura, 1973;
McBirney and Naslund, 1990].