Whole rock compositional variations in an upper mantle peridotite (Horoman, Hokkaido, Japan): are they consistent with a partial melting process?

Petrology, geochemistry and Re–Os isotopes of peridotite xenoliths from Yantai, Shandong Province: Evidence for Phanerozoic lithospheric mantle beneath eastern North China Craton

“…In particular, the inverse correlations between CaO (TiO 2 and Al 2 O 3 ) and MgO are similar to those observed for residual peridotites from worldwide occurrences (Fig. 4; e.g., Takazawa et al, 2000). The melt depletion is also evidenced from mineral compositions, which show decreasing Ti and Na 2 O in cpx with increasing Cr# sp (Fig.…”

“…Al 2 O 3 , CaO and TiO 2 correlate negatively with MgO (Fig. 4), forming trends similar to the global one defined by mantle xenoliths and massive peridotites (e.g., Takazawa et al, 2000). Consistent with their mineral modal composition, the majority of the Yantai peridotites are refractory harzburgites, with high MgO content (>42 wt.%) and Mg# value (>90.5), low CaO (b 2.0 wt.%), Al 2 O 3 (b 2.0 wt.%) and TiO 2 (b 0.04 wt.%) contents.…”

“…The contributions of the blanks to measured Os contents were less than 1.5% for all samples, and to Re contents were less than 30 % for most samples. Takazawa et al (2000). Black fields represent the compositions of the primitive mantle after Jagoutz et al (1979), and Hart and Zindler (1986).…”

A recent trend in sciences on mantle-derived materials, with special emphases on refertilization, rheology, and ophiolite problems: a report of the Fifth International Conference on Orogenic Lherzolite

“…Frey et al (1985); 11, Frey and Prinz (1978). (Takahashi, 1992;Takazawa et al, 1992Takazawa et al, , 2000，フランス Lherz 岩体 ， イタリア Ivrea 帯に産するかんらん岩体群 (Ernst, 1978;Hartmann and Wedephol, 1993)，ノルウェー西片麻岩体に 産するかんらん岩類 (Carswell, 1968)などである。また， Miyashiro et al, 1969;Dick and Bullen, 1984;Dick, 1989;Johnson et al, 1990;Niu, 1997 (Hellebrand et al, 2002;Seyler et al, 2003Seyler et al, , 2007Brunelli et al, 2006;Suhr et al, 2008)。ただし，移動するメルトと既 存結晶との反応によって形成されたとする組織や，メルト Fig. 1.…”

Petrology of exotic high-Mg, Cr peridotite bodies in the Horoman Peridotite Complex, Japan

“…( Kushiro and Yoder, 1966;Niida, 1984;Hirai and Arai, 1987;Takahashi and Arai, 1989;1989;Takahashi, 1991Takahashi, , 1992Takahashi, , 2001Ozawa and Takahashi, 1995;Takazawa et al, 1992Takazawa et al, , 1996Takazawa et al, , 1999Takazawa et al, , 2000Yoshikawa et al, 1993;, 1997;Yoshikawa and Nakamura, 2000;Morishita and Arai, 2003;Morishita et al, 2003Morishita et al, , 2004Ozawa, 2004;Sawaguchi, 2004) Takahashi (1991 3…”