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Leiqiong regional MORB-OIB mantle source Can the transition effect of Nd-Sr-Pb isotopic evidence

Cattle Farm for a Th O1 {6.925.34 soil Zhi 1.621.5015 0.2581. H. 14Q-Tkz10''A1''Ar5 .396.62 soil O. 6281. H. 16Q-ThZK. 0.461.285126.77l. O ± O. 75S1 an H-l3Q-Th peak 0.671.360933.1011.68 soil stack O. cattle 758 H. Bu 15Q-Th peak of 1.52 {stack cattle. 441531.0916. {7Sl-K-l0l-Th Beacon Hill 1.520.24024.951.05 soil 0.3O8l-K 3lQ-Th Warriors field a hole 2.440-4 # 3315.981 722. Soil 0.1881 a K. Th Wushih a port 201 Lingtou 1.210.47821I. 852.28 soil 0.1981. K-l801 a Th275 hole 1.030.52992 {· 272.96 +0.158 I-K-l0Q-Th South East 0.450.2411.753.09 farm land O. 178I-K-l20l-Th MSC Hong Kong 0.84O. K ± 0.2981 44402.3.04 a happy farm for a 4Q-Th West 0.47O. 29 posts 5. S53.61 + d. 328l-K for a 1101 Stone Mountain 2.012.13761 a '4 .016.12 +0.2581 Th K A 38Bn725 a hole 1.67I. fi28931.885.6z soil O. 768l-K for a 2l01 1.372 a Th275 hole. 971121.6812.6 soil O. 4801 Yue Wang a Th tholeiite,[link widoczny dla zalogowanych], O-Th quartz tholeiite Bn Bi Yan Yuen. + II. Nd-sr-Pb exposure with values of 23 drugs with different thread the chemical composition of rock samples were selected for Nd-Sr isotopic analysis, and further choose from 14 different Nd-Sr isotopic composition of Pb isotopic analysis of samples, data results listed in Table 3. Nd, Sr isotope analysis methods are detailed in the literature (Mao Cunxiao etc., 1988) reported. Isotope analysis in a VG 354 mass spectrometer isotope analysis were done on oNd sickle with a single agent A Canadian analysis of launch, Nd concentration and isotope ratios measured in one process. Nd isotopes of the two samples and quantitative deviation of repeated measurements show that were better than the 2 / 10 million and a Bute. Other samples of Nd, Sr isotope analysis errors (2) general superior / l0 million oPb Ba isotopic ratios, and generally better than 5 / million. Rb,[link widoczny dla zalogowanych], Sr content x fluorescence spectroscopy applied prospectively determined. sm content using isotope dilution. According to the sample Sm / Nd and Rb / Sr ratio and K as the initial value of the isotopic age calculation and measurement NdSr deviation of generally less than 2 × 10 ~, so measurements can directly reflect the characteristics of mantle source. Table 3 shows the area from the Nd isotopic variation in 0.512736-0.513039, most of the samples higher than 0.5129. The maximum value of the South China Sea Basalt High Chienshih (O.51305) consistent with (Zhou, 1982). Cenozoic basalts from northeast China Nd / Nd is lower than o. 5128o in North China has not found that more than o. 51295 (veng, 1985). f / a cushion ratio except for a few samples, the variation in the range m703l a 0.7040,[link widoczny dla zalogowanych], also generally lower than the Cenozoic basalts in Northeast and North China. 1089 Chronology of Geochemistry 3 (a) Nd-sr Leiqiong VOLCANIC bit cold with the parent body and the content ratio of the data number''NdNd. 18r,[link widoczny dla zalogowanych], 3-512909 soil 5.703419 + l66. 2427.171 l542.13B9.O5B78l-H a, -, 12,737 soil J2.7ll237 soil 993.7319.8D32qo7.1l38.2270dl-H a 6.5I2851 soil l8.703993 ± 1 {5 More articles related to topics：

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