petrogenic
English
Adjective
petrogenic (not comparable)
- Of or pertaining to the formation of rock.
- 1924, Frank Wigglesworth Clarke, Henry Stephens Washington, “Evolution of the Elements”, in The Composition of the Earth’s Crust (United States Geological Survey Professional Paper; 127), Washington, D.C.: Government Printing Office, →OCLC, pages 107–108:
- Silica and alumina are distinctly the most abundant and characteristic petrogenic constituents, and with them are most frequently associated those elements toward the extreme petrogenic end of the periodic table, especially potassium, sodium, and calcium in the order named; and these elements are associated with each other.
Adjective
petrogenic (not comparable)
- (of hydrocarbons etc) Produced by the incomplete combustion of petroleum
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