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期刊论文
Fluid Composition and Carbon & Oxygen Isotope Geochemistry of Cenozoic Alkali Basalts in Eastern China
CHIN ES E JOURNAL OF GEOCHEMISTRY, Vol.18 No.3 1999,-0001,():
The flald compositions of Cenozoic alkali basalts in eastern China have been cletermined by the pyrolysis-MS method, meanwhile the carbon and oxygen isotopic compositions of CO2 released from these samples at different heating temperatures have been analyzed by the vacuum seep-heating method. The data show the volatile heterogeneity in uppermantle som-ces and different evolution trends of alkali basaltic magmas in eastern China, and these alkali basaltic magmas may be generated in the oxidizing milieu, as compared with mantle-derived xenohths in these alkali basalts, and exotic volatile components were mixed into these magmas in the process of their formation and development.
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