Trace elements in garnets of felsic granulites as sediment
provenance indicators

J 2003

Trace elements in garnets of felsic granulites as sediment provenance indicators

ČOPJAKOVÁ, Renata, Petr SULOVSKÝ and Bruce PATERSON

Basic information

Original name

Trace elements in garnets of felsic granulites as sediment provenance indicators

Name in Czech

Trace elements in garnets of felsic granulites as sediment provenance indicators

Name (in English)

Trace elements in garnets of felsic granulites as sediment provenance indicators

Authors

ČOPJAKOVÁ, Renata (203 Czech Republic, guarantor), Petr SULOVSKÝ (203 Czech Republic) and Bruce PATERSON (826 United Kingdom of Great Britain and Northern Ireland)

Edition

Journal of the Czech Geological Society, Praha, Czech Geological Society, 2003, 1210-8197

Other information

Language

Czech

Type of outcome

Článek v odborném periodiku

Field of Study

10500 1.5. Earth and related environmental sciences

Country of publisher

Czech Republic

Confidentiality degree

není předmětem státního či obchodního tajemství

RIV identification code

RIV/00216224:14310/03:00058723

Organization unit

Faculty of Science

Keywords in English

garnet chemistry; trace elements; granulites; foreland basin; provenance; Bohemian Massif; European Variscides

Abstract

ORIG EN

V originále

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.

In English

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.

Detailed Information on Publication Record