An archaean granulite-grade tonalite-trondhjemite-granite suite from scourie, NW Scotland: Geochemistry and origin

Geochemical characterization of Cretaceous sandstones from the Southern Benue Trough, Nigeria

“…High Ca and Sr values would also reflect the presence of mafic material, although in this case their initial plagioclase host has been albitized with the subsequent redistribution of these elements. The Sr concentrations in the Cretaceous sandstones studied are similar to those of the tonalite and trondhjemite rocks described by Rollinson and Windley (1980). The high values of Rb, Zr, Sr and low Cr and Ni suggest more felsic contribution than mafic to the Cretaceous sedimentary basin.…”

Subduction or sagduction? Ambiguity in constraining the origin of ultramafic–mafic bodies in the Archean crust of NW Scotland

“…1), Rollinson and Windley (1980) 674 suggested that the TTG gneisses intruded, and therefore post-dated, the layered ultramafic-675 mafic bodies (their figure 1), an interpretation followed by Rollinson and Gravestock (2012). 676…”

High-precision U–Pb dating of complex zircon from the Lewisian Gneiss Complex of Scotland using an incremental CA-ID-TIMS approach

“…It is composed of Archean gneisses which have been variably reworked during the Proterozoic and has proven to be a key region in the study of crustal growth and continental tectonics (e.g. Moorbath et al, 1969;Hamilton et al, 1979;Rollinson and Windley, 1980;Whitehouse and Moorbath, 1986;Heaman and Tarney, 1989;Coward, 1990;Whitehouse and Bridgwater, 2001;Rollinson, 2012;Johnson et al, 2013). The Lewisian gneisses, are predominantly tonalite-trondhjemite-granodiorite (TTG) gneisses but also feature gneisses of sedimentary origin, metamorphosed ultramafic rocks, mafic dykes and alkali granitoids, all of which are variably deformed and metamorphosed (Tarney and Weaver, 1987;Goodenough et al, 2013;MacDonald et al, 2013).…”