Results 111 to 120 of about 15,451 (231)

New geochemical and isotopic constraints on the genesis of the Oliveira Azeméis granitoid melts (Porto-Tomar Shear Zone, Iberian Variscan Chain, Central-Western Portugal). [PDF]

open access: yes, 2012
The Porto-Tomar Shear Zone (PTSZ) is a very important tectonic structure that separates, in central-western Portugal, two of the major tectonic units of the Iberian Variscan Chain: the Ossa-Morena Zone, to the west, and the Central Iberian Zone, to the ...
Gonçalves, A.   +3 more
core   +1 more source

Greenstone belts: Their components and structure [PDF]

open access: yes
Greenstone sucessions are defined as the nongranitoid component of granitoid-greenstone terrain and are linear to irregular in shape and where linear are termed belts. The chemical composition of greenstones is described.
Barton, J. M., Jr.   +4 more
core   +1 more source

Shoshonitic enclaves in the high Sr/Y Nyemo pluton, southern Tibet: Implications for Oligocene magma mixing and the onset of extension of the southern Lhasa terrane [PDF]

open access: yes, 2020
Post-collisional potassic and high Sr/Y magmatism in the Lhasa terrane provides critical constraints on the timing and mechanism of subduction of Indian lithosphere and its role in the uplift of the Tibetan Plateau.
Asimow, Paul D.   +8 more
core  

Granitoid-series evaluation of the Archaean Johannesburg Dome granitoids, South Africa.

open access: yesBULLETIN OF THE GEOLOGICAL SURVEY OF JAPAN, 2002
Shunso ISHIHARA   +2 more
openaire   +2 more sources

Granitoid Source and Orogen Types [PDF]

open access: yesGoldschmidt Abstracts, 2020
Tao Wang   +8 more
openaire   +1 more source

Granitoid, upper Cretaceous, contamination, Lut block, Kaje, Iran

open access: yesJournal of Economic Geology, 2013
Granitoid rocks of Kaje area, northwest Ferdows, with the composition of diorite, monzodiorite, monzonite, monzogranite, syenogranite and granite, with calk-alkaline and high potassium affinities, have trace and rare earth element geochemical ...
Ali Najafi   +4 more
doaj  

Weathering Trends Unveil K-Metasomatism in Bundelkhand Granitoids: Resolving the Pink–Grey Granitoid Paradox

open access: yes
The petrogenetic puzzle of pink coloration of granitoid rocks is rooted on the debate between primary magmatic versus metasomatic origin of K-feldspar, which, in turn, has persisted due to difficulties in distinguishing these processes through conventional petrographic methods.
Shiba Acharya   +4 more
openaire   +1 more source

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