Petrology and mineralogy of spinel-clinopyroxenite xenolith in Early Jurassic intrusive complex from Xu-Huai region, central China indicate that Mg-Fe spinel and Al-clinopyroxene assemblage could be present as the cumulate of the underplating magma in the lower crust or the most upper mantle, which were formed under 0.

Abundant pyroxenite xenoliths were found from the Cenozoic Changle basalts,an area distributing near the Tanlu fault zone.

The major and trace element data of granulite and pyroxenite xenoliths, which are entrained in Hannuoba basalt Hebei Province, North China, suggest the highly chemical heterogeneity in the lower crust and crust-mantle transitional zone.

Eclogite facies garnet pyroxenolite xenoliths in Hannuoba area show the typical layered cumulate structures and crystalloblastic textures of granulite facies.

Abundant eclogite xenoliths are found in Mesozoic dioritic rocks from Xuzhou-Suzhou area,central China.

The carbon,oxygen and hydrogen isotopic compositions of volatiles in the olivine(Olv),orthopyroxene(Opx) and clinopyroxene(Cpx) of the lherzolite xenoliths from eastern China have been measured by stepwise heating mass spectrometers.