Experimental determination of partition coefficients for rare earth and high-field-strength elements between clinopyroxene, garnet, and basaltic melt at high pressures
Article Abstract:
A coherent set of partition coefficients for rare earth elements (REE) and high-field-strength elements (HFSE) between clinopyroxene, garnet, and basaltic melt in the pressure range 2.0-3.0 GPa have been derived from a series of doped, high pressure piston cylinder experiments. The data for clinopyroxene indicate that partitioning of these elements is not a strong function of pressure or temperature, except in the case of Ti which shows a mild temperature dependence. Melting in the spinel peridotite stability pressure range can produce the HFSE anomalies in some of the data.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1998
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Sm-Nd garnet ages and cooling history of high-temperature garnet peridotite massifs and high-pressure granulites from lower Austria
Article Abstract:
The ages of three samples of Sm-Nd garnet from peridotites, pyroxenites and high-pressure granulites from Lower Austria were analyzed to determine the origin of the high-temperature garnet peridotite massifs from Lower Austria. Analysis of the Sm-Nd garnet indicated the fast cooling of the granulites and peridotites during the upper Visean. Furthermore, the periodite massifs underwent near-isothermal decompression during extension in a late Devonian marginal basin.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1997
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Petrological constraints on the cooling history of high-temperature garnet peridotite massifs in lower Austria
Article Abstract:
The high-temperature segment of the cooling history of garnet and spinel bearing massifs from Austria are studied. It is shown that the high-temperature peridotite massifs have an early cooling history from high temperatures exceeding 1200 degrees Centigrade followed by decompression and additional cooling. It is also shown that in certain areas, emplacement near the surface occurred in extensional tectonic settings.
Publication Name: Contributions to Mineralogy and Petrology
Subject: Earth sciences
ISSN: 0010-7999
Year: 1997
User Contributions:
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