Trondhjemite is a leucocratic (light-colored) intrusive igneous rock. It is a variety of tonalite in which the plagioclase is mostly in the form of oligoclase...

Tonalite–trondhjemite–granodiorite (TTG) rocks are intrusive rocks with typical granitic composition (quartz and feldspar) but containing only a small...

7 Ga. Much of the granitic rock belongs to the distinctive tonalite–trondhjemite–granodiorite family of rocks, which are characteristic of Archean continental...

plutonic ultramafic rock containing olivine, pyroxene and plagioclase Trondhjemite – Light-colored intrusive igneous rock – A form of tonalite where plagioclase-group...

500-million-year time span and can be divided into two suites: The tonalite-trondhjemite-granodiorite (TTG) suite (emplaced approximately 3.5–3.2 Ga), and the...

intruded by a distinctive group of granitic rocks called the tonalite-trondhjemite-granodiorite or TTG suite. These are the most voluminous rocks in the...

later came to refer to quartz monzonite, and is now a deprecated term. Trondhjemite is an orthoclase-deficient variety of sodium-rich tonalite with minor...

a complex of felsic magmatic rocks. These rocks are mostly tonalite, trondhjemite or granodiorite, types of rock similar in composition to granite (hence...

ISSN 1752-0894. Mutanen, Tapani; Huhma, Hannu (2003). "The 3.5 Ga Siurua trondhjemite gneiss in the Archaean Pudasjärvi Granulite Belt, northern Finland" (PDF)...

terranes. These intrusive felsic igneous rocks include TTG suites (Tonalite-trondhjemite-granodiorite) that contributes over half the portion of Archean cratons...

deposits including gold and copper. Drummond and Defant noted that Archean trondhjemites (which make up most of the ancient crust of continents) have similar...

element ratios such as Th/Sc, Co/Th, La/Sc, La/Co suggest a tonalite–trondhjemite–granodiorite–charnockite provenance, and somewhat more felsic composition...

1016/0024-4937(83)90024-5. Drummond, M. S.; Defant, M. J. (1990). "A model for Trondhjemite-Tonalite-Dacite Genesis and crustal growth via slab melting: Archean...

(28–186 mi). Partial melting of eclogite has been modeled to produce tonalite-trondhjemite-granodiorite melts. Eclogite-derived melts may be common in the mantle...

contain an abundance of Archean felsic volcanic rocks, including tonalite, trondhjemite and granodiorite (TTG) series rocks,[failed verification] with minor...

zones. The lithologies of the Dharwar Craton are mainly TTG (Tonalite-trondhjemite-granodiorite) gneisses, volcanic-sedimentary greenstone sequences and...

characterised by magmatic activity leading to the formation of Archaean Tonalite-Trondhjemite-Granodiorite (TTG) such as the Sand River Gneisses and the Bulai Granite...

unmetamorphosed sediment derived mainly from eroded Mesoarchaean tonalite–trondhjemite–granodiorites. It is over a kilometer thick, with various sources claiming...

gneiss is sometimes described as the oldest rock found in Europe, but trondhjemite gneiss recently measured at Siurua in Finland has been dated to 3.4–3...

within the European Union can be found in Siuruankylä, Pudasjärvi. The trondhjemite gneiss is aged 3,500 million years. Two Finnish melodic death metal bands...

Crestmore Quarry, Riverside County, California Tonalite: Tonale Pass Trondhjemite: Follstad, Støren, Norway Uraninite: Joachimsthal, Austria-Hungary (now...

deposited and into which the voluminous Archaean trondhjemite-tonalite-granodiorite suite and trondhjemite-tonalite-diorite suite granites were emplaced...

about 1.7 Ga and the Grenvillian orogenic event respectively. Tonalite–trondhjemite–granodiorite – Intrusive rocks with typical granitic composition Park...

outcrops on Aruba consisting of tonalite with subordinate and comagmatic trondhjemite, diorite, gabbro, norite, and a dark-colored (melanocratic), hydrous...

Trachyandesite Benmoreite Trachybasalt Hawaiite Trachyte Troctolite Trondhjemite Tuff Websterite Wehrlite Sedimentary rock Argillite Arkose Banded iron...

Complex is a heterogeneous assemblage of foliated to gneissic tonalites, trondhjemites, granodiorites, and granites which contains minor quartz-diorites, diorites...

evolution of the Famatinian orogen from the paleomagnetic record of El Hongo trondhjemite (Early Paleozoic, Sierras Pampeanas de Córdoba, Argentina)". Journal...

"Partial melting of amphibolite/eclogite and the origin of Archean trondhjemites and tonalites". Precambrian Research. 51 (1–4): 1–25. Bibcode:1991PreR...

forming pillow lavas. These lavas were later cross-cut by intrusions of trondhjemite. Bymarka west of Trondheim also has similar geological structures, both...

migmatites. They were crystallised 3.45 billion years ago during the trondhjemite magmatism (Phase III). Similar emplacement (Phase IV) at 3.33 billion...