ČOPJAKOVÁ, Renata, Petr SULOVSKÝ a Bruce PATERSON. Trace elements in garnets of felsic granulites as sediment provenance indicators. Journal of the Czech Geological Society. Praha: Czech Geological Society, 2003, roč. 48, 1-2, s. 34-35. ISSN 1210-8197.
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Základní údaje
Originální název Trace elements in garnets of felsic granulites as sediment provenance indicators
Název česky Trace elements in garnets of felsic granulites as sediment provenance indicators
Název anglicky Trace elements in garnets of felsic granulites as sediment provenance indicators
Autoři ČOPJAKOVÁ, Renata (203 Česká republika, garant), Petr SULOVSKÝ (203 Česká republika) a Bruce PATERSON (826 Velká Británie a Severní Irsko).
Vydání Journal of the Czech Geological Society, Praha, Czech Geological Society, 2003, 1210-8197.
Další údaje
Originální jazyk čeština
Typ výsledku Článek v odborném periodiku
Obor 10500 1.5. Earth and related environmental sciences
Stát vydavatele Česká republika
Utajení není předmětem státního či obchodního tajemství
Kód RIV RIV/00216224:14310/03:00058723
Organizační jednotka Přírodovědecká fakulta
Klíčová slova anglicky garnet chemistry; trace elements; granulites; foreland basin; provenance; Bohemian Massif; European Variscides
Štítky Bohemian massif, European Variscides, foreland basin, garnet chemistry, granulites, provenance, trace elements
Příznaky Mezinárodní význam, Recenzováno
Změnil Změnil: RNDr. Petr Sulovský, Ph.D., učo 2157. Změněno: 11. 11. 2003 21:52.
Anotace
The Lower Carboniferous Culm Basin is part of the larger European Variscan foreland basin. The youngest sediments of the Myslejovice Formation contain heavy mineral assemblages dominated by pyrope-almandine garnets. This paper compares the major element (electron microprobe) and trace element (LA-ICP-MS) compositions of detrital pyrope-almandine garnets from the Luleč Conglomerates with garnets from selected granulites of the Czech Massif for the purpose of studying the provenance of the Culm sediments. Detrital low grossular pyrope-almandine garnets can only be matched with some granulites and leptynites of the Bohemian Massif. At the present-day level of erosion of the Bohemian Massif, granulite garnets have higher calcium and/or lower magnesium concentrations. The compositions and zoning patterns of pyrope-almandine garnets from the Luleč quarry compare well with granulite garnets from the Miroslav Crystalline Unit and small Moldanubian granulite bodies west of Jihlava. Pyrope-almandine garnets from leptynites of the Polička Crystalline Unit and the Náměšť Granulite Massif show large differences in REE patterns. The results indicate that the sediment provenance may well have been changing during the deposition of the Luleč Conglomerates.
Anotace anglicky
The Lower Carboniferous Culm Basin is part of the larger European Variscan foreland basin. The youngest sediments of the Myslejovice Formation contain heavy mineral assemblages dominated by pyrope-almandine garnets. This paper compares the major element (electron microprobe) and trace element (LA-ICP-MS) compositions of detrital pyrope-almandine garnets from the Luleč Conglomerates with garnets from selected granulites of the Czech Massif for the purpose of studying the provenance of the Culm sediments. Detrital low grossular pyrope-almandine garnets can only be matched with some granulites and leptynites of the Bohemian Massif. At the present-day level of erosion of the Bohemian Massif, granulite garnets have higher calcium and/or lower magnesium concentrations. The compositions and zoning patterns of pyrope-almandine garnets from the Luleč quarry compare well with granulite garnets from the Miroslav Crystalline Unit and small Moldanubian granulite bodies west of Jihlava. Pyrope-almandine garnets from leptynites of the Polička Crystalline Unit and the Náměšť Granulite Massif show large differences in REE patterns. The results indicate that the sediment provenance may well have been changing during the deposition of the Luleč Conglomerates.
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