Rare earth element geochemistry of selected mafic-ultramafic units from Singhbhum Craton: Implications to source heterogeneity

A. Roy, A. Sarkar, S. K. Bhattacharya, H. Ozaki, M. Ebihara

研究成果: Article査読

5 被引用数 (Scopus)

抄録

Modelling of REE data indicates that while mafic rocks of Dhanjori Group are partial melting products of a spinel Iherzolite source, Dalma ultrabasics are the residue after the melt-extraction from an original garnet Iherzolite rock. Ultramafics of Newer dolente dykes indicate either derivation by mantle meta somatism or effect of post magmatic serpentinisation. REE data in conjunction with the available geochronological data suggest that significant mantle heterogeneity existed over relatively smaller distances (∼100 km) even during Proterozoic and that the mantle evolved in a non-uniform manner with distinct localised processes.

本文言語English
ページ(範囲)717-726
ページ数10
ジャーナルJournal of the Geological Society of India
50
6
出版ステータスPublished - 1997 12
外部発表はい

ASJC Scopus subject areas

  • Geology

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