Garnet compositions in Scottish and Norwegian basement terrains: a framework for interpretation of North Sea sandstone provenance

Evolution of provenance in the NE Atlantic rift: The Early–Middle Jurassic succession in the Heidrun Field, Halten Terrace, offshore Mid-Norway

“…Sand type MN5 is interpreted as being derived from the Caledonian Nappe Domain on the adjacent part of MidNorway, garnet data indicating supply from regions N2, N3 and possibly N4 (Fig. 1), as defined by Morton et al (2004). This area includes metasediments, ophiolites, granites and high-grade metabasic rocks, all of which are diagnosed by the various components in the MN5 heavy mineral assemblages.…”

“…Data sources for East Greenland and Norway geology are Gaal and Gorbatschev (1987), Sigmond (1992), Escher and Pulvertaft (1995) and Koistinen et al (2001). Areas N1, N2, N3 and N4 are from Morton et al (2004). Note that this map does not take Jurassic and Cretaceous extension in the Norwegian Sea into account.…”

“…9). The predominance of Type A garnet indicates that high-grade granulite facies metasedimentary rocks and/or charnockites were widespread in the source region (Sabeen et al, 2002;Morton et al, 2004). Intermediate-acidic igneous rocks representing the products of magmas emanating from deep crustal levels are another potential source of Type A garnet (Mange and Morton, 2007), but the abundance of rutile, staurolite and kyanite in the heavy mineral assemblages argues against such a provenance.…”

Heavy minerals from sedimentary rocks of the Malcov Formation and their palaeogeographic implications for evolution of the Magura Basin (Western Carpathians, Slovakia) during the Late Eocene – Late Oligocene

“…Gar nets with sig nif i cant Fe and Mn con tents may be de rived from low-to me dium-grade meta sedi ments or from in ter me diate to acidic gneiss es (Deer et al, 1992;Mor ton et al, 2004;Suggate and Hall, 2013). Gar nets from low-grade metapelites are char ac ter ized by zon ing, and a zoned pat tern of some de trital gar nets is vis i ble (Ap pen dix 3).…”

Discrimination of density flow deposits using elemental geochemistry—Implications for subtle provenance differentiation in a narrow submarine canyon, Palaeogene, Danish North Sea

“…While the lack of fossils hampers stratigraphical correlation of, and between, massive sand bodies, the absence of sedimentary structures causes difficulties when interpreting sediment geometry and processes of transportation and deposition. A number of studies have shown that mineralogical or chemical differences caused by changes in supply can yield a platform for detailed correlation (Andersson et al, 2004;Basu and Molinaroli, 1989;Hounslow and Morton, 2004;Mange-Rajetzky, 1995;Morton et al, 2004;Morton, 1991;Morton and Hallsworth, 1999;Nakashima and Imaoka, 1998;North et al, 2005;Okrusch et al, 2003;Owen, 1987;Pearce, 1990;Pearce and Jarvis, 1995;Preston et al, 1998;Preston et al, 2002;Utzmann et al, 2002). Also microanalyses of chemical composition of single minerals have proved very useful in a large number of provenance studies (e.g.…”