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- W2384451997 abstract "The authors studied the geochemical characteristic and Sr-Nd isotope of the porphyritic granites in the Gaudeanmus area,Namibia and discussed the petrogenesis and tectonic significance. The results indicate the porphyritic granites showing the characteristics of metaluminous,belonging to high-K calc-alkaline to shoshonite series. The granites contained high alkali and rare eatth elements( REE),enriched in large-ion lithopile elements( Rb,Th,U,K,Pb),and depleted in high field-strength elements( Nb,Ta,Ti,Zr,Hf),with medium negative Eu anomalies. These rocks have high initial87Sr /86Sr ratios( 0. 715 61 ~ 0. 722 07),low intial eNd( t) values(- 13. 9 ~- 12. 7) and ancient Nd isotope crust model ages( 2 025 ~ 2 153 Ma). Such geochemical signature showed that the porphyritic granites were syn-collision S-type granite in characteristics and derived from partial melting of ancient crustal rocks during the main periods collision of Kalahari and Congo craton." @default.
- W2384451997 created "2016-06-24" @default.
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- W2384451997 date "2013-01-01" @default.
- W2384451997 modified "2023-09-24" @default.
- W2384451997 title "Petrogenesis and tectonic setting of porphyritic granites in Gaudeanmus area,Namibia" @default.
- W2384451997 hasPublicationYear "2013" @default.
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