Discussion of REE distribution patterns of carbonatites and alkalic rocks

P. Möller, G. Morteani, F. Schley

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Abstract

Analytical data on REE, Sr, Ba, and Na of carbonatites, their calcite separates, and associated alkalic rocks from Fen/Norway, Alnö/Sweden and Kaiserstuhl/Germany are discussed. The REE distribution patterns of carbonatites suggest sympathetic behaviour with those of their associated alkalic rocks. This could be interpreted as the result of liquid/liquid separation. The typically steep patterns may be the result of Ca-metasomatism of alkaline-earth rich, but alkali-poor liquids with olivine-rich, alkali bearing, subcrustal rocks. Additionally, during this process incompatible elements could become concentrated in the carbonate rich liquid.

Original languageEnglish
Pages (from-to)171-179
Number of pages9
JournalLithos
Volume13
Issue number2
DOIs
StatePublished - 15 Apr 1980
Externally publishedYes

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