The Journal of Geology, Vol. 46, No. 3, Part 2 (Apr. - May, 1938), pp. 505-520 (16 pages) A modified variation diagram for plotting groups of chemical analyses of ...
Vast accumulations of igneous rock, termed large igneous provinces, are found in various regions of the globe. These masses of rock were erupted very rapidly — geologically speaking — usually over a ...
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