felsic

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felsic englanniksi

Enriched in minerals predominantly composed of the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium.
(quote-book) Professional Paper 261, (w)|pageurl=https://books.google.com.au/books?id=vEtXAAAAMAAJ&pg=PA22&dq=%22more%7Cmost+felsic%22&hl=en&sa=X&ved=0ahUKEwjG-9vZ7p_jAhW0H7cAHRDaCHUQ6AEINjADv=onepage&q=%22more%7Cmost%20felsic%22&f=false|page=22
1983, Paul C. Bateman, ''A summary of critical relations in the central part of Sierra Nevada batholith, California, U.S.A.'', J. A. Roddick (editor), ''Circum-Pacific Plutonic Terranes'', (w) Memoir 159, page 241,

Within comagmatic suites, successively younger granitoids are commonly, but not invariably, more felsic, representing progressively lower temperature mineral assemblages.

1992, David C. Champion, Bruce W. Chappell, ''Petrogenesis of felsic I-type granites: an example from northern Queensland'', P. E. Brown, B. W. Chappell (editors), ''The Second Hutton Symposium on the Origin of Granites and Related Rocks'', Proceedings, (w) Special Paper 272, Originally published in ''Transactions of the (w): Earth Sciences, Volume 83'', page 115,

The Claret Creek Supersuite granites are a little more felsic (65-77% SiO2), and are chemically distinctive, having higher Al2O3, CaO, Na2O and Sr, and lower K2O, Rb, Th and U than the granites of the Almaden Supersuite.

A rock with such properties.
1953, R. C. Emmons, ''Chapter 6: Petrogeny of the Syenites and Nepheline Syenites of Central Wisconsin'', R. C. Emmons (editor), ''Selected Petrogenic Relationships of Plagioclase'', (w) Memoir 52, page 80,

The central part of this nepheline syenite is very white felsics with black mafics in it. The entire area contains many nepheline-bearing dike rocks, but almost all are gray or pink or even red due to the color in the felsics.

{{quote-book|en|year=1992|author=T. E. Smith|chapter=Chapter 1: Volcanic Rocks of Early Proterozoic Greenstone Belts|editor=K. C. Condie|title=Proterozoic Crustal Evolution|publisher=Elsevier|pageurl=https://books.google.com.au/books?id=nHfwi-mXYgIC&pg=PA35&dq=%22felsics%22&hl=en&sa=X&ved=0ahUKEwjh1OiZ_5_jAhXDXCsKHZg-AngQ6AEIdTAPv=onepage&q=%22felsics%22&f=false|page=35