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Fig. 3 | Swiss Journal of Geosciences

Fig. 3

From: Post-Variscan metamorphism in the Apuseni and Rodna Mountains (Romania): evidence from Sm–Nd garnet and U–Th–Pb monazite dating

Fig. 3

Photomicrographs of thin sections illustrating the relationships between different garnet populations and chemical zoning. Sample localities are indicated in Fig. 2. Abbreviations of mineral names are after Whitney and Evans (2010). a Large, torn staurolite from the Baia de Arieş Unit partially engulfed by idiomorphic garnet with an inclusion-rich, embayed core; b large, zoned garnet with rotated inclusion trails in the core from the Bihor Unit; c garnet micaschist from the Ţicău inselberg exhibiting staurolite overgrowing the crenulated foliation; d dark haloes around monazite inclusions in biotite from the Preluca Unit (also observed in the Ţicău sample), indicating radiation damage zones; e large, broken staurolite grains from the Rebra Unit; f large, fragmented garnet porphyroclasts from the Bretila Unit

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