peraluminous


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peraluminous

[‚pər·ə′lü·mə·nəs]
(petrology)
Of igneous rock, having a molecular proportion of aluminum oxide greater than that of sodium oxide and potassium oxide combined.
References in periodicals archive ?
381-370 Ma), a peraluminous granitoid suite that underlies approximately half of southern Nova Scotia (McKenzie and Clarke 1975; Reynolds et al.
Regional pegmatite mineralization is directly associated with the strongly peraluminous Ghost Lake Pluton and related pegmatitic granite dykes.
in the peraluminous granites of the batholith, analogous to the French
Other topics of the 14 papers include translocation of heavy metals in Chinese cabbage, uranium in the water of abandoned mines, recent advances in separating uranium from other heavy metals, and uranium minerals from a Portuguese variscan peraluminous granite.
lt;1), and only three of them present a weak peraluminous character (A.
Within the peraluminous granitic rocks of southern Nova Scotia, uranium concentrations generally increase and thorium concentrations decrease with increasing magmatic differentiation, resulting in abnormally high eU/eTh associated with the most evolved parts of these granitic intrusions.
The "younger" Devonian event is characterized by intrusion of peralkaline, metaluminous, and peraluminous granitoid stocks and batholiths.
Proterozoic peraluminous granites and associated Sn-W deposits, Kingdom of Saudi Arabia, in R.
Most of the gold occurs in a breccia unit related to the Sortan fault that strikes northwest, dips northeast and juxtaposes Jurassic Winterhaven Formation against lower plate gneisses which have been extensively intruded by biotite alaskite phases of the Marcus Wash peraluminous granitic complex.
Neodymium and strontium isotopic constraints on the origin of the peraluminous granitoids of the South Mountain Batholith, Nova Scotia, Canada.
Within this unit are the favourable peraluminous granites, of which uranium deposits associated with such geology can be significant.