Publication Date:
1948-12-01
Description:
In the discussion on a paper read recently by A, G. MacGregor on Scottish Carboniferous volcanicity,1 one of us, speaking on behalf of both, raised some points concerning the nomenclature of magma-types which we feel are worth amplifying. The points at issue concern firstly the use of the terms “tholeiite” and “olivinebasalt” when applied to fundamental magmas, and secondly the propriety of referring to the suites of rock-types supposed to be derived from them as “calc-alkali” and “alkali” respectively.
Print ISSN:
0016-7568
Electronic ISSN:
1469-5081
Topics:
Geosciences