BY L. KEITH WARD, B.A., B.B. 



149 



The Long Plain, on the east of the amphibolite, con- 

 tains quartzitic, sericitic, and graphitic schists. To the 

 westward the country contains slate and quartz schist, 

 but no detailed geological examination has yet been 

 made. 



This zone of schists is known to extend in a north- 

 westerly direction for 10 miles, where it crosses the 

 Savage River. 



The strike of these rocks is N. lodeg. W., and the 

 ■dip to the N.E.. 



VI. The most northerly of the larger areas covered 

 hy the Pre-'Cambrian rocks is that which extends from 

 the Mackintosh River on the west to the Forth River 

 •on the east, and almost to the Dove River on the north 



The western portion of this area is penetrated by Ihe 

 granite of Granite Tor (2) and there is a larger area of 

 Permo-carboniferous sandstone, capped by diabase, 

 overlying it at Barn Bluff. On the south similar rocks 

 to these last-mentioned go to build up the Eldon Range, 

 which separates this area from that which is numbered 

 VIII. 



The rocks are chiefly foliated quartz-schists, with 

 Ttiicaceous and argillaceous schists as well, the strike of 

 -which is a few degrees N. of W. at Barn Bluff. 



VII. What is probably a small outlier of the latter 

 'area is situated between the head of the King River and 

 the North Eldon River, to the east and south-east of 

 Lake Dora. 



VIII. The largest unbroken development is that 

 which extends southwards from the vicinity of the 

 Eldon Range throughout the greater part of the basin 

 of the Franklin River (3). On the north-west it is 

 •bounded by the superincumbent Silurian sediments 



(i) See G. A. Waller, " Report on the Mineral Districts of 

 Bell Mount, Dove River, Five-mile Rise, Mount Pelion, and 

 Barn Bluff," 1901. 



(2) 'Geological Survey of Tasmania, Bulletin No. 3. 



(3) See " Report of the Department of Lands and Surveys 

 for 19Q7-1908." 



