Orbicules: An indication of the crystallisation of hydrosilicates, I
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Combining zircon texture, REE patterns and U-Pb-Hf isotopes to decipher the formation process of orbicular rocks: A case study from Huangling orbicular granodiorite, Yangtze craton, China
2021, LithosCitation Excerpt :Spheroidal to ellipsoidal textures comprising a core and one or several encircling layers, are characteristic of orbicular rocks (e.g., Elliston, 1984).
Petrology and geochemistry of the orbicular granitoid of Caldera, northern Chile. Models and hypotheses on the formation of radial orbicular textures
2017, LithosCitation Excerpt :Orbicular rocks are mostly found in the margins of intrusive plutonic complexes, as decametric to hectometric bodies (Decrite et al., 2002), associated with crystallization fronts, magma–host rock interaction areas or magma fractures (Abdallah et al., 2007; Fernández and Castro, 1999; Grosse et al., 2010). The orbicules are spheroidal to ellipsoidal structures composed by a core and one or several rings of typical granitic minerals (shell), which show radial and/or concentric textures (e.g. Elliston, 1984). The orbicular cores can be made of country rock fragments (mostly granitoids), mineral aggregates or individual crystals from the orbicular magma or the host rock (Decrite et al., 2002; Elliston, 1984; Grosse et al., 2010).
Chemical emplacement of magma
2000, Journal of GeodynamicsSpeculations about crustal evolution
1992, Journal of Geodynamics