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报道了辽宁宽甸、吉林辉南和河北汉诺坝新生代玄武岩中幔源包体的稀有气体丰度和同位素组成.与大洋中脊玄武岩（MORB）和其他地区相比,我国东北部幔源包体具有较低的稀有气体丰度、类似或低于MORB的3He/4He比值、低于MORB的40Ar36Ar比值、类似大气的38Ar/36Ar和Ne-Kr-Xe同位素组成等特征.这些结果表明我国东北部岩石圈地幔的不均一性,即存在类似于宽甸的亏损地幔和类似于辉南地区的富集地幔.3个地区低40Ar/36Ar比值可能暗示着岩石圈地幔中随板块消减而加入了大气稀有气体成分.
The rare gas abundance and isotopic composition of the Mesozoic mafic enclaves in Kuandian, Jilin, Huinan, and Hannobaba, Hebei Province are reported. Compared with the mid-ocean ridge basalts (MORB) and other regions, the northeastern mantle The inclusions have lower abundance of rare gas, similar or lower MORB 3He / 4He ratio, lower MORB than the 40Ar36Ar ratio, similar to the atmospheric 38Ar / 36Ar and Ne-Kr-Xe isotopic composition.These results show that China The heterogeneity of the lithospheric mantle in the northeast, ie, the depleted mantle similar to Kuandian and the enriched mantle similar to the Huinan region, and the low 40Ar / 36Ar ratios of the three regions may imply that the lithospheric mantle is added with plate depletion The atmosphere of rare gas composition.