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Library of Experimental Phase Relations (LEPR): A database and Web portal for experimental magmatic phase equilibria data
Department of Geology and Geophysics, University of Minnesota, 108 Pillsbury Hall, Minneapolis, Minnesota 55455, USA
OFM Research – West, 7336 24th Avenue NE, Seattle, Washington 98115, USA
Department of Geology and Geophysics, University of Minnesota, 108 Pillsbury Hall, Minneapolis, Minnesota 55455, USA
Department of Geology and Geophysics, University of Minnesota, 108 Pillsbury Hall, Minneapolis, Minnesota 55455, USA
Department of Geology and Geophysics, University of Minnesota, 108 Pillsbury Hall, Minneapolis, Minnesota 55455, USA
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA
Department of Earth, Atmospheric, and Planetary Sciences, Massachusetts Institute of Technology, 77 Massachusetts Avenue, Cambridge, Massachusetts 02139-4307, USA
We describe the Library of Experimental Phase Relations (LEPR), which is a new Web-based database of experiments pertaining to magmatic phase equilibria. The database includes information from experiments related to natural or near-natural magmatic silicate phase equilibria. At present, the database includes more than 6,600 experiments with liquids ranging in composition from komatiite to rhyolite performed at temperatures between 500 and 2500°C and at pressures up to 27.5 GPa. Here we describe the organization of data and metadata that are included in the database as well as the database structure and the implementation of its Web interface. We discuss a number of challenges and considerations related to construction of a database of experimental data that influence both the selection and presentation of the information incorporated in LEPR. Finally, we survey durations of experiments in LEPR and discuss the relationship between duration and the probability of crystal-liquid equilibrium in petrologic experiments.
Received 12 November 2007; accepted 28 January 2008; published 14 March 2008.
Citation: (2008), Library of Experimental Phase Relations (LEPR): A database and Web portal for experimental magmatic phase equilibria data, Geochem. Geophys. Geosyst., 9, Q03011, doi:10.1029/2007GC001894.
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