caa a22 4500 46789003X CHVBK 20180406152746.0 cr unu---uuuuu 170328e20060901xx s 000 0 eng 10.1007/s00710-006-0158-0 doi (NATIONALLICENCE)springer-10.1007/s00710-006-0158-0 Origin of eclogite and garnet pyroxenite from the Moldanubian Zone of the Bohemian Massif, Czech Republic and its implication to other mafic layers embedded in orogenic peridotites [Elektronische Daten] [M. Obata, T. Hirajima, M. Svojtka] Summary: The granulite terrane of the Czech part of the Gföhl unit includes numerous small bodies of mantle derived peridotite, some of which contain layers or lenses of eclogite and garnet pyroxenite. These eclogitic rocks have generally been considered to be high-pressure crystal cumulates formed in the upper mantle. We present new analyses of whole-rock major and trace element contents for three kynanite-quartz eclogite samples taken from the Nové Dvory garnet peridotite body. Integrating these data with previously published analyses from the literature on eclogitic rocks from this terrane, we demonstrate that a magnesian group of eclogites, including these three new samples, were originally formed as cumulus gabbros, which were later transformed to eclogites in the mantle. A gabbroic origin for some mafic layers (Type II) has been advocated for other orogenic peridotites, such as Beni Bousera (Morocco), Ronda (Spain), and Horoman (Japan). By comparing these sets of data with those from the Bohemian Massif, we propose a simple method of identifying groups of metagabbros by utilizing MgO-normalization in oxide ratio plots for whole-rock major element analyses. Springer-Verlag, 2006 Obata M. Department of Geology and Mineralogy, Graduate School of Science, Kyoto University, Kyoto, Japan aut Hirajima T. Department of Geology and Mineralogy, Graduate School of Science, Kyoto University, Kyoto, Japan aut Svojtka M. Institute of Geology, Academy of Sciences, Czech Republic aut Mineralogy and Petrology Springer-Verlag 88/1-2(2006-09-01), 321-340 0930-0708 88:1-2<321 2006 88 710 https://doi.org/10.1007/s00710-006-0158-0 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00710-006-0158-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Obata M. Department of Geology and Mineralogy, Graduate School of Science, Kyoto University, Kyoto, Japan aut NATIONALLICENCE 700 1- Hirajima T. Department of Geology and Mineralogy, Graduate School of Science, Kyoto University, Kyoto, Japan aut NATIONALLICENCE 700 1- Svojtka M. Institute of Geology, Academy of Sciences, Czech Republic aut NATIONALLICENCE 773 0- Mineralogy and Petrology Springer-Verlag 88/1-2(2006-09-01), 321-340 0930-0708 88:1-2<321 2006 88 710 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer