论文部分内容阅读
Extensive late Paleozoic mafic-ultramafic complexes in the Eastern Tianshan and Beishan regions in the southern Central Asian Orogenic Belt(CAOB) represent an ideal opportunity to assess the characteristics of the mantle in this area.Whole-rock Nd-Sr and zircon Hf-O isotopic data from the mafic-ultramafic complexes of the Jueluotage Belt,Middle Tianshan Massif and Beishan Rift were compiled for isotopic mapping.ε_(Nd)(t) and(~(87)Sr/~(86)Sr)_i values range from +5.5 to +9.5 and 0.702 to 0.706 respectively in the Jueluotage Belt,and from- 2 to + 11 and 0.703 to 0.710 respectively in the Middle Tianshan and Beishan.Zirconε_(Hf)(t) andε~(18)O values are in the range of +6.0-+17.0 and 4.14‰-8.00‰respectively in the Jueluotage Belt,+1-+8 and 5.17‰-6.30‰respectively in the Middle Tianshan,