Petrology of plagiogranites of the Yenisei Batholith, Western Sayan

Petrology of plagiogranites of the Yenisei Batholith, Western Sayan

The tonalite-plagiogranite (tonalite-trondhjemite) association only occasionally occurs in the form of large granitoid bodies, such as the Yenisei Batholith (>500 km^sup 2^ in area). The granitoids of the Yenisei Batholith belong to Na-rich tholeiitic rock series and differ from granitoids of the...

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Veröffentlicht in:Petrology 2006-05, Vol.14 (3), p.284-298
Hauptverfasser: Grebenshchikova, V. I., Koval, P. V.
Format: Artikel
Sprache:eng
Schlagworte:
Geochemistry
Geology
Igneous rocks
Magma
Marine
Mineralogy
Oceanic crust
Petrology
Rocks
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Zusammenfassung:The tonalite-plagiogranite (tonalite-trondhjemite) association only occasionally occurs in the form of large granitoid bodies, such as the Yenisei Batholith (>500 km^sup 2^ in area). The granitoids of the Yenisei Batholith belong to Na-rich tholeiitic rock series and differ from granitoids of the calc-alkaline series in having lower contents of alkalis and alumina (12-14 wt % Al^sub 2^O^sub 3^) and low contents of granitophile elements (Rb, Li, Cs, Be, Nb, Ta, and W), Cr, and Ni. The Cr/V (
ISSN:0869-5911
1556-2085
DOI:10.1134/S0869591106030052