FIG. 1.-THIN SECTION OF SEDIMENTARY BED, FROM CLARKSBURG FORMATION, SHOWING SECONDARY HORNBLENDE CRYSTALS. 



Fig. 2. -thin SECTION OF FRAQMENTAL ROCK, FROM NEAR BASE OF CLARKSBURG FORMATION. 



Fig 3 THIN SECTION OF BANDED TUFF, FROM CLARKSBURG FORMATION. 



Fig. 4. THIN SECTION OF GREENSTONE. FROM REPUBLIC, SHOWING SECONDARY HORNBLENDE CRYSTALS. 



