Jelaskan Petrologi dari Boninit

Boninit biasanya terdiri dari fenokris berupa piroksen dan olivin yang tertanam pada matriks kaca kaya kristalit

Kandungan magnesium tinggi (MgO = 8-15%)

Kandungan titanium rendah(TiO2 < 0.5%)

Kandungan silika 57 - 60%

Tinggi akan Mg/(Mg + Fe) (0.55-0.83)

Unsur-unsur kompatibel mantel normal Ni = 70-450 parts per million, Cr = 200-1800 ppm

Ba, Sr, LREE yang tinggi dibanding dengan toleit.

Rasio Ti/Zr (23-63) dan rasio La/Yb (0.6-4.7)

Anthony J. Crawford and W. E. Cameron, 1985. Petrology and geochemistry of Cambrian boninites and low-Ti andesites from Heathcote, Victoria Contributions to Mineralogy and Petrology, vol 91 no. 1. Abstract

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Dobson, P.F., Skogby, H, and Rossman, G.R. (1995) Water in boninite glass and coexisting orthopyroxene: concentration and partitioning. Contrib. Mineral. Petrol. 118,414-419.

Le Maitre, R. W. and others (Editors), 2002, Igneous Rocks: A Classification and Glossary of Terms: Recommendations of the International Union of Geological Sciences Subcommission on the Systematics of Igneous Rocks, Cambridge University Press, 2nd, ISBN 0-521-66215-X

Blatt, Harvey and Robert Tracy, 1995, Petrology, Second Edition: Igneous, Sedimentary, and Metamorphic, W. H. Freeman, 2nd, p. 176 ISBN 0-7167-2438-3

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Resing, J. A., K.H. Rubin, R. Embley, J. Lupton, E. Baker, R. Dziak, T. Baumberger, M. Lilley, J. Huber, T.M. Shank, D. Butterfield, D. Clague, N. Keller, S. Merle, N.J. Buck, P. Michael, A. Soule, D. Caress, S. Walker, R. Davis, J. Cowen, A-L. Reysenbach, and H. Thomas, (2011): Active Submarine Eruption of Boninite at West Mata Volcano in the Extensional NE Lau Basin, Nature Geosciences, 10.1038/ngeo1275.