Rare earth element investigation of the Cliefden Outcrop, N.S.W., Australia
β Scribed by Phillip L. Hellman; Raymond E. Smith; Paul Henderson
- Publisher
- Springer
- Year
- 1977
- Tongue
- English
- Weight
- 892 KB
- Volume
- 65
- Category
- Article
- ISSN
- 0010-7999
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β¦ Synopsis
The effect of low grade hydrous burial metamorphism (prehnite-pumpellyite facies) upon the rare earth elements (REE) has been studied by using samples from the Ciiefden Outcrop, New South Wales. The REE, together with other reputedly 'immobile' elements, have been mobilised during the metamorphism. Although mobile, the REE have behaved remarkably coherently with little light rare earth (LREE) fractionation. This is reflected in the chondrite normalised patterns which are sub-parallel to parallel in shape. High correlations of REE with other elements can be used to predict the maximum likely variation of these elements in the studied outcrop. The high correlations do not necessarily mean that, for similarly metamorphosed terrains, crystallisationdifferentiation processes have operated but may rather have resulted from strong geochemical coherence during post-crystallisation elemental redistribution. The REE do not appear to be strongly domain controlled within the Cliefden Outcrop.
π SIMILAR VOLUMES
Four muscovite-biotite granites from the Western Metamorphic Belt of South-eastern Australia have rare earth element patterns characterized by: (i) light rare earth element enrichment; (ii) slight Eu depletion; (iii) varying degrees of heavy rare earth element depletion. The rare earth element and m