Results 71 to 80 of about 43,392 (192)

Hydrous Asthenosphere Underneath the Northern Pannonian Basin

open access: yesTerra Nova, EarlyView.
ABSTRACT This study reveals the structural hydroxyl content in clinopyroxenes of three cumulate xenoliths from the Nógrád‐Gömör/Novohrad‐Gemer Volcanic Field (northern Pannonian Basin), with values ranging from 275 to 384 ppm. Based on these data, the water content of the equilibrium parental alkali basaltic melt was estimated to be between 1.5 and 2.1 
Levente Patkó   +6 more
wiley   +1 more source

Enrichment of incompatible elements at grain-boundaries of olivine in an olivine-nephelinite.

open access: yesGEOCHEMICAL JOURNAL, 1986
Variations in the concentrations of trace elements at and near the subgrain-boundaries within olivine phenocrysts in an olivine-nephelinite were inspected with an electron microprobe. The olivine phenocrysts show homogeneous core (Fo85) surrounded by the Fe-richer rim.
openaire   +3 more sources

Olivine as a refractory [PDF]

open access: yesBureau of Standards Journal of Research, 1934
R.A. Heindl, W.L. Pendergast
openaire   +1 more source

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