PLATE II 



A. PHOTOMICROGBAPH OF "TILLITE" FROM THE HEAD OF SOUTH FORK 



Showing rounded and angular fragments, chiefly quartz, in a dark matrix, 

 principally biotite. Enlarged 25 diameters 



B. PHOTOGRAPH OF HAND SPECIMEN OF "TILLITE" FROM SOUTH FORK 



Showing rounded quartzite pebble in black groundmass. Natural size 



