tonalite-trondhjemite-granodiorite

/ˈtoʊnəlaɪt ˈtrɒn(d)jəmaɪt ˌɡrænəʊˈdaɪəraɪt/

noun

A group of silica-rich intrusive igneous rocks that mainly formed in Earth’s early history. They are considered some of the primary building blocks of the oldest continental crust and are typically produced by partial melting of hydrated basalt deep in the crust or mantle.

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Meanings

nountonalite-trondhjemite-granodiorite (uncountable, abbreviation TTG)

abbreviation TTG

  1. uncountablechemistryA group of silica-rich intrusive igneous rocks that mainly formed in Earth’s early history. They are considered some of the primary building blocks of the oldest continental crust and are typically produced by partial melting of hydrated basalt deep in the crust or mantle.

Origin

From tonalite + trondhjemite + granodiorite.

Full word history & related roots →

Translations

French tonalite-trondhjémite-granodiorite
  • tonalite-trondhjémite-granodioritegroup of intrusive rocks with typical granitic composition containing a small portion of potassium feldspar
Portuguese tonalito-trondhjemito-granodiorito
  • tonalito-trondhjemito-granodioritogroup of intrusive rocks with typical granitic composition containing a small portion of potassium feldspar
Spanish tonalita-trondhjemita-granodiorita
  • tonalita-trondhjemita-granodioritagroup of intrusive rocks with typical granitic composition containing a small portion of potassium feldspar
Cite this entry
APA

tonalite-trondhjemite-granodiorite. (n.d.). In WatkinsX Dictionary. Retrieved November 5, 2026, from https://dictionary.watkinsx.com/word/tonalite-trondhjemite-granodiorite

MLA

“tonalite-trondhjemite-granodiorite.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/tonalite-trondhjemite-granodiorite. Accessed November 5, 2026.

Chicago

WatkinsX Dictionary, s.v. “tonalite-trondhjemite-granodiorite,” accessed November 5, 2026, https://dictionary.watkinsx.com/word/tonalite-trondhjemite-granodiorite.

Source: tonalite-trondhjemite-granodiorite on Wiktionary, CC BY-SA 4.0.