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The Plagioclase Feldspars as an Index to Soil Weathering
Author(s) -
Graham E. R.
Publication year - 1950
Publication title -
soil science society of america journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.836
H-Index - 168
eISSN - 1435-0661
pISSN - 0361-5995
DOI - 10.2136/sssaj1950.036159950014000c0068x
Subject(s) - plagioclase , index (typography) , soil water , weathering , citation , library science , history , geology , archaeology , geochemistry , computer science , soil science , world wide web , paleontology , quartz
THE weathering of rock fragments and minerals has been understood in a general way for a long time, but many of the details are less clear. The purpose of this investigation was to study in more detail the rates of weathering of the plagioclase feldspars and to investigate some soil samples for the amount and kind of plagioclase present. Petrographic observations regarding the chemical stability of the various members of the plagioclase series have been reported in numerous publications. S. Goldich (2) has summarized the various reports and concludes that the feldspars could be listed in order of increasing stability as follows: