XVI PROCESS-BLOCKS AND OTHER ILLUSTRATIVE FIGURES. 



Fig. Page 



3. Typical scar formed of Moine Gneisses, showing the resem- 



blance to unaltered sandstones , 405 



4. Geological Map of Glen Clunie 422 



5. Line of erosion in fine Moine Gneisses at the base of the Main 



Limestone 430 



6. Diagram showing the Dark Schist and Parallel-Banded Rocks 



apparently on opposite sides of the Limestone, while in 

 reality they are on the same side 431 



7. Diagram showing the true succession of the rocks described ... 438 



8. Diagram to illustrate the mcde of arrangement of the areas in 



which the typical flaggy Moine Gneisses now occur, etc. ... 441 



9. Section across Glen Tilt, passing close to Gilbert's Bridge 444 



1. Sketch of a nodule of complex structure 460 



2. Complex vesicle in artificial slag 461 



3. Sketch-map showing Pontesford rocks faulted against Cambrian 



shales, at the top of the road leading to Pontesbury 465 



4. Section under the fence, western flank of Pontesford Hill 468 



5. Roughly-parallel wavy ridges on a weathered surface of basalt. 479 



