Journal article
Remnants of boninitic melts in the upper mantle beneath the central Pannonian Basin?
Mineralogy and Petrology, Vol.90(1), pp.51-72
05/2007
DOI: 10.1007/s00710-006-0167-z
Abstract
We present a detailed textural and compositional study of two orthopyroxene-rich olivine websterites. One occurs as a vein in a harzburgite xenolith and the other is an individual xenolith, both found at Szentbékkálla in the Bakony–Balaton Highland Volcanic Field (central Pannonian Basin, western Hungary). The textural features of these orthopyroxene-rich rocks suggest that they crystallized from silicate melts to form veins in peridotite mantle rock. Their geochemical features, such as the presence of Al2O3-poor orthopyroxenes, Cr-rich spinels, and clinopyroxenes with U-shaped chondrite-normalized REE-patterns, indicate that the vein material formed from Mg-rich silicic (boninitic) melts at mantle depths. The olivine fabric investigation of both the veins and the wall-rock suggest that the development of the veins was followed by subsequent recrystallization during the Cenozoic evolution of the Carpathian–Pannonian region.
Details
- Title: Subtitle
- Remnants of boninitic melts in the upper mantle beneath the central Pannonian Basin?
- Creators
- E Bali - Lithosphere Fluid Research Lab, Department of Petrology and Geochemistry Eötvös University Budapest HungaryG Falus - Eötvös Loránd Geophysical Institute Budapest HungaryC Szabó - Lithosphere Fluid Research Lab, Department of Petrology and Geochemistry Eötvös University Budapest HungaryD. W Peate - Department of Geoscience University of Iowa Iowa USAK Hidas - Lithosphere Fluid Research Lab, Department of Petrology and Geochemistry Eötvös University Budapest HungaryK Török - Eötvös Loránd Geophysical Institute Budapest HungaryT Ntaflos - Department of Geological Sciences Geozentrum University of Vienna Wien Austria
- Resource Type
- Journal article
- Publication Details
- Mineralogy and Petrology, Vol.90(1), pp.51-72
- Publisher
- Springer-Verlag; Vienna
- DOI
- 10.1007/s00710-006-0167-z
- ISSN
- 0930-0708
- eISSN
- 1438-1168
- Language
- English
- Date published
- 05/2007
- Academic Unit
- Earth and Environmental Sciences; Honors Program
- Record Identifier
- 9983983656202771
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