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 ...
VOLUMES 3 and 4 of this work complete what must be the most compendious hand book of petrography ever issued. In the first volume Johannsen gave an admirably illustrated account of rock textures and ...
PROF. SHAND'S interesting and original book is, as he says in the preface, the outcome of three insistent wishes: first, to clean up the “jungle of rock names;” second, to make the results and ...
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