Elder, Samuel  <br/><br/>
Comparison of three Scottish magmas 

 - 80-85p.  Illustration 
<br/><br/> Extract<br/>A comparison of the chemical features of Scottish magmas, has been greatly simplified through the appearance of a recent memoir, compiled from the records of the Geological Survey (Guppy, 1931). This memoir gives the composition, age, locality, and microscopic petrography of a great number of Scottish rocks. The present note deals with three Scottish magmas: Devonian (Lower Old Red Sandstone), Carboniferous and Tertiary. It excludes certain analyses of the Survey list, owing to decomposition of the analysed material. It includes a few from outside sources, to augment the data concerning the Devonian magma (F. Walker, 1924, 1925, 1927, 1928; and J. G. C. Anderson, 1935). 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Comparison - Magmas - Scotland<br/>Comparison - Chemical features - Scottish magma