6533b855fe1ef96bd12b11c2

RESEARCH PRODUCT

Evidence from zircon dating for existence of approximately 2.1 Ga old crystalline basement in southern Bohemia, Czech Republic

Alfred KrönerJiří FialaWolfgang TodtJ. I. Wendt

subject

geographygeography.geographical_feature_categoryEndocrinology Diabetes and MetabolismGeochemistryGeneral MedicineMassifTectonicsEndocrinologyGroup (stratigraphy)Internal MedicineGeneral Earth and Planetary SciencesSedimentologyStructural geologyQuartzGeologyZircon

description

Zircon ages are reported for three Moldanubian amphibolite grade orthogneisses from the southern Bohemian Massif obtained by conventional U/Pb analyses. For two of these orthogneisses, conventional U/Pb data are supported by ion microprobe single zircon ages or single grain evaporation data. The amphibolite grade orthogneisses, occurring in three small tectonic lenses within the Varied Group close to the South Bohemian Main Thrust, are of tonalitic, granodioritic or quartz dioritic composition.

https://doi.org/10.1007/bf00563269