Timothy John Barrington Holland is a British petrologist who is Emeritus Professor in the Department of Earth Sciences at the University of Cambridge.

[3] Holland was educated at the University of Oxford where he was awarded a Doctor of Philosophy degree in 1977[1] for research on eclogites in the Tauern region of the Alps supervised by Stephen W.

[12] He has worked to construct a self-consistent thermodynamic database which describes equilibria among the multi-component mineral phases important in rocks and with full propagation of errors.

[12] Recent advances include the calculation of mineral assemblages and compositions as a function of composition, pressure and temperature and the thermodynamic modelling of silicate melts, critical to tectonic interpretations of deeply buried rocks.

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