Field and hand sample photographs of felsic (meta-)igneous rocks from the Sioule region. (a) Boudins of muscovite ± biotite metagranitoid hosted by mica schist (Sioule Valley; WGS84 coordinates: 2.9897; 46.1250). (b) Paragneiss enclave within a meter-sized body of moderately deformed biotite granitoid (Sioule Valley; 3.0029; 46.1194). (c) Metatexitic biotite metagranite with scarce K-feldspar phenocrysts, layered with granitic leucosomes bordered by biotite ribbons (Le Boulard quarry; 3.0313, 46.2324). The inset shows a diatexitic metaleucogranite with partially resorbed K-feldspar phenocrysts. (d) Saint-Gervais biotite-cordierite-muscovite granite displaying C/S fabrics with dextral kinematics along the Sainte-Christine shear zone (Sainte-Christine; 2.8373; 46.0642). (e) Biotite granitoid of the Chantelle Massif with roughly defined foliation (3.1522, 46.2435). (f) Pouzol-Servant K-feldspar porhyritic biotite microgranite (Sioule Valley; 2.9876, 46.1253). (g) Unconformable contact between trachy-dacitic tuff of the Châteauneuf Formation and paleo-weathered Saint-Gervais granite (Pont de Braynant; 2.9053, 46.0364). Note lapilli clast mostly consisting of devitrified glass in bedded tuff ECH23-07. (h) Champs biotite granite (ECH22-44) including leucogranitic facies with quartz-tourmaline orbicules (ECH22-08; 3.1813, 46.1317). Mineral abbreviation from Warr (2021). Other abbreviations: S₀ - bedding, S - foliation, C - shear plane, L - lineation.