Hokkaido peridotites

Symplectite-bearing peridotites. Although equilibrated in the spinel and plagioclase peridotite facies, the Hokkaido orogenic peridotites. 

Frey F. A., Shimizu N., Leinbach A., Obata M., and Takazawa E. (1991) Compositional variations within the lower layered zone of the Horoman peridotite, Hokkaido, Japan constraints on models for melt-solid segregation. In Orogenic Lherzolites and Mantle Processes, Spec. Vol. J. Petrol, (eds. M. A. Menzies, C. Dupuy, and A. Nicolas). Oxford University Press, Oxford, UK, pp. 211-227. 

Ozawa K. and Takahashi N. (1995) P-T history of a mantle diapir the Horoman peridotite complex, Hokkaido, northern Japan. Contrib. Mineral. Petrol. 120, 223-248. 

Takahashi N. (2001) Origin of plagioclase Iherzolite from the Nikanbetsu peridotite complex, Hokkaido, northern Japan implications for incipient melt migration and segregation in the partially-molten upper mantle. J. Petrol. 42, 39—54. 

Takahashi N. and Arai S. (1989) Textural and Chemical Features of Chromian Spinel-pyroxene Symplectite in the Horoman Peridotites, Hokkaido, Japan. Scientific Reports of the Instimte of Geosciences of the University of Tsukuba, Section B, 10, pp. 45-55. 

Takazawa E., Prey P., Shimizu N., and Obata M. (1996) Evolution of the Horoman Peridotite (Hokkaido, Japan) implications from pyroxene compositions. In Melt Processes and Exhumation of Garnet, Spinel and Plagioclase Facies Mantle (eds. M. A. Menzies, J. L. Bodinier, F. Frey, F. Gervilla, and P. Kelemen). Elsevier, Amsterdam, Netherlands, vol. 134, pp. 3-26. 

Toramaru A., Takazawa E., Morishita T., and Matsukage K. (2001) Model of layering formation in a mantle peridotite (Horoman, Hokkaido, Japan). Earth Planet. Sci. Lett. 185, 299-313. 

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