Note 434 — Chapter XXV · GEOLOGICAL STRUCTURE OF THE CARBONIFEROUS VOLCANIC PLATEAUX OF SCOTLAND

The illustrations in Figs. 124 and 125 are taken from the field-maps of the Geological Survey on the scale of 6 inches to a mile. The ground represented in Fig. 124 was mapped by Mr. R. L. Jack.

[435] These ground-plans are likewise taken from the field-maps of the Geological Survey. A and C were mapped by Mr. Jack, B by myself. The shaded parts are intrusive andesites and dolerites; the dark bars in A and C being dolerite dykes of much later date than the necks. The dotted portions mark tuff and agglomerate.