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MANTLE ORIGIN [1 record]
Record 1 - internal organization data 2004-12-08
Record 1, English
Record 1, Subject field(s)
- Geochemistry
- Metals Mining
Record 1, Main entry term, English
- mantle source
1, record 1, English, mantle%20source
correct
Record 1, Abbreviations, English
Record 1, Synonyms, English
- mantle origin 2, record 1, English, mantle%20origin
correct
Record 1, Textual support, English
Record number: 1, Textual support number: 1 CONT
We can often differentiate between these two sources (crustal and mantle) by examining variations in 34S/32S. ... Originally, all the earth's sulphur was in the mantle. Much of that transferred to the crust has undergone biogenic fractionation .... It is now held to be an oversimplification to claim that for all natural sulphur a narrow range of [delta]34S close to zero indicates a mantle source, and a wide range of [delta]34S a crustal source. 3, record 1, English, - mantle%20source
Record 1, French
Record 1, Domaine(s)
- Géochimie
- Mines métalliques
Record 1, Main entry term, French
- origine mantellique
1, record 1, French, origine%20mantellique
correct, feminine noun
Record 1, Abbreviations, French
Record 1, Synonyms, French
- source mantellique 2, record 1, French, source%20mantellique
correct, feminine noun
Record 1, Textual support, French
Record number: 1, Textual support number: 1 CONT
L'origine des magmas granitiques. La véritable distinction est à faire entre [...] les granites issus de la fusion partielle de la croûte par des processus métamorphiques [...] et [...] les granites issus de la différenciation d'un magma [...] d'origine sous-crustale (mantellique). Trois cas, que l'on peut distinguer à partir des rapports isotopiques du strontium, sont donc possibles : a) L'origine crustale [...]. b) L'origine mantellique (différenciation magmatique). C'est le cas des granites anorogéniques océaniques [...] Le rapport isotopique du Sr est compris entre 0,702 et 0,705. c) Origine mixte, mantellique et crustale. 3, record 1, French, - origine%20mantellique
Record 1, Spanish
Record 1, Textual support, Spanish
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