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Trough structures in the Western syenite of Kungnat, S Greenland: mineralogy and mechanism of formation

Article Abstract:

The sequence of events that generated the formation of the Western layered syenite stock of the Kungrat complex of the Mid-Proterozoic Gardar province of S Greenland was analyzed based on the characterization of the troughs. The syenitic rocks of the Kungrat complex were composed of a lower and an upper group of infilled troughs. The troughs were composed of highly melanocratic materials compared to the surrounding syenitic rocks. Furthermore, a series of regularly spaced streams was formed by the descending slurry which eroded the trough shaped channels.

Greenland, Mountains, Geomorphological research

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Garnet-bearing ultramafic rocks from the Erzgebirge, and their relation to other settings in the Bohemian Massif

Article Abstract:

The Erzgebirge Crystalline Complex (ECC) in the Bohemian Massif within the European Variscan belt is composed of garnet-bearing ultramafic rocks that are enclosed by high-grade gneisses. The garnet-bearing ultramafic rocks were formed by a spinel/garnet peridotite transition that took place in the crustal region. Furthermore, the crustal eclogites of the ECC tectonic unit was genetically linked with the other complexes of the Bohemian Massif.

Europe, Geomorphology, Bohemia

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