HEIGHT: 18pt; MARGIN: 0cm 0cm 0pt; mso-line-height-rule: exactly" class=MsoNormal>man">Mantle peridotite xenoliths form Abaga area, hemas-microsoft-com:office:smarttags" />Inner Mongolia, predominantly contain spinel lherzolites, which consist of olivine(Fo_89-91), clinopyroxene (Wo_43-49En_44-49Fs_3-11), orthopyroxene (Wo_0.7-2.2En_88-91Fs_8-11) and spinel (Cr^#_6-20). Most peridotites exhibit porphyroclastic texture, in addition, there are edged sponge texture, mosaic granoblastic texture, coarse texture and catablastic texture. Kink bands and iddingsitization are common in olivine. These characteristics suggest that the history of the upper mantle underneath Abaga area is complex and experiences strong melt-lithosphere interaction. The diverse degree of asthenosphere-lithosphere interactions, the complex of upper mantle geological evolution, besides, blocks form the Xing’an-Mongolia Orogenic Belt have distinct nature of activity time, intensity, etc, all this lead to a large scale heterogeneous of the lithospheric mantle.hemas-microsoft-com:office:office" />